Class 10 Chemistry MCQs Tests

This page contains all the online tests for Class 10 Chemistry MCQs. Students should do the practice of all these tests for getting good marks in fbise board exams. We have prepared all the possible Chemistry MCQs for Class 10.

Chapter 9 – Chemical Equilibrium

Practice Tests

Chapter 9 Practice MCQs Test No 1

Chapter 9 Practice MCQs Test No 1

Class 10 Chemistry
Chapter 9
Practice MCQs Test No 1

1 / 10

________ and _________ are main gases of the air.

Nitrogen, Hydrogen

Nitrogen, Oxygen

Sulphur, Oxygen

Hydrogen, Oxygen

2 / 10

Which of the following catalysts is used to form NH₃ gas from Nitrogen and Hydrogen gas?

Fe₂O₃

FeO

3 / 10

Which of the following is not the macroscopic characteristic of forward reaction?

It is written from left to right

Rate is fastest in the beginning and gradually slows down

Products produce reactants

Reactants produce products

4 / 10

Which is true about the equilibrium state?

The reverse reaction stops

The forward reaction stops

Both forward and reverse reactions stop

Both forward and reverse reactions continue at the same rate

5 / 10

Active mass means:

Total mass of reactants

Both A and B

Mass of substance in mole / dm³ in dilute solution

Total mass of products

6 / 10

Concentration of reactants and products at equilibrium remains unchanged if:

Concentration of any reactant or product is not changed

Temperature of the reaction is not changed

Pressure or volume of the system is not changed

All of the above are observed

7 / 10

Sulphuric acid is produced on the large scale by the process known as:

Haber process

Le Chatellier’s process

Direct Process

Contact process

8 / 10

Ammonia is produced by the reaction of nitrogen and hydrogen at 450 °C, 200 atm pressure in the presence of a catalyst. The process is known as:

Le Chatellier’s process

Contact process

Direct Process

Haber process

9 / 10

A double arrow (⇌) indicates:

Reverse reaction

Reversible reaction

Forward reaction

Irreversible reaction

10 / 10

When a mixture of H₂ and I₂ is sealed in a flask and temperature is kept at 25°C, following equilibrium is established.
H_{2 (g)} + I_{2 (g)} ⇌ 2HI _(g)

Which substance or substances will be present in the equilibrium mixture?

H₂, I₂ and HI

HI only

H₂ only

H₂ and I₂

Your score is

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Chapter 9 Practice MCQs Test No 2

Chapter 9 Practice MCQs Test No 2

Class 10 Chemistry
Chapter 9
Practice MCQs Test No 2

1 / 8

Which of the following reaction will not have any units for Kc?

2A _(g) + B _(g) ⇌ 3AC _(g)

All of these

N_{2 (g)} + O_{2 (g)} ⇌ 2NO _(g)

2A _(g) + B _(g) ⇌ 3AC _(g)

H_{2 (g)} + CO_{2 (g)} ⇌ H₂O _(g) + CO _(g)

2 / 8

For a general reaction

2A + B ⇌ 2C + D.

The rate of forward reaction will be equal to:

K_f [A][B]

K_f [A]²[B]

K_f [2A][B]

K_f [A]²+[B]

3 / 8

Sulphur Trioxide is prepared according to the following reaction:

2SO_{2 (g)} + O_{2 (g)} ⇌ 2SO_{3 (g)}

The condition of this reaction is:

Fe / 400 °C , 200 atm

Electric Spark

V₂O₅ / 450 °C , 200 atm

Ni / 450 °C , 200 atm

4 / 8

What is the unit of equilibrium constant for N_{2 (g)} + 2O_{2 (g)} ⇌ 2NO_{2 (g)}?

No units

mol . dm^-3

dm³ . mol^-1

mol² . dm^-6

5 / 8

What is the unit of equilibrium constant for N_{2 (g)} + O_{2 (g)} ⇌ 2NO _(g)?

dm³ . mol^-1

mol . dm^-3

No units

mol² . dm^-6

6 / 8

At equilibrium state of a reversible reaction:

Concentrations of the reactants become zero

Forward and reverse reactions are stopped

Concentration of reactants and products become constant

Concentrations of reactants and products become equal

7 / 8

In an irreversible reaction, equilibrium is:

Never established

Established quickly

Established when reaction stops

Established slowly

8 / 8

For a reversible reaction:
Kc = [C]² / [A][B] .

The correct equation for above expression is:

C ₂ ⇌ A + B

2C ⇌ A + B

A + B → 2C

A + B ⇌ 2C

Your score is

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Quiz Tests

Chapter 9 MCQs Quiz

Chapter 9 MCQs Quiz

Class 10 Chemistry
Chapter 9
Practice MCQs Test No 1

1 / 10

Which of the following is not the macroscopic characteristic of forward reaction?

Products produce reactants

It is written from left to right

Reactants produce products

Rate is fastest in the beginning and gradually slows down

2 / 10

Which of the following catalysts is used to form NH₃ gas from Nitrogen and Hydrogen gas?

Fe₂O₃

FeO

3 / 10

A double arrow (⇌) indicates:

Reversible reaction

Irreversible reaction

Reverse reaction

Forward reaction

4 / 10

When a mixture of H₂ and I₂ is sealed in a flask and temperature is kept at 25°C, following equilibrium is established.
H_{2 (g)} + I_{2 (g)} ⇌ 2HI _(g)

Which substance or substances will be present in the equilibrium mixture?

H₂ and I₂

H₂, I₂ and HI

H₂ only

HI only

5 / 10

Active mass means:

Total mass of products

Total mass of reactants

Mass of substance in mole / dm³ in dilute solution

Both A and B

6 / 10

Sulphuric acid is produced on the large scale by the process known as:

Le Chatellier’s process

Haber process

Contact process

Direct Process

7 / 10

Concentration of reactants and products at equilibrium remains unchanged if:

Pressure or volume of the system is not changed

All of the above are observed

Temperature of the reaction is not changed

Concentration of any reactant or product is not changed

8 / 10

Which is true about the equilibrium state?

Both forward and reverse reactions stop

Both forward and reverse reactions continue at the same rate

The forward reaction stops

The reverse reaction stops

9 / 10

________ and _________ are main gases of the air.

Nitrogen, Oxygen

Nitrogen, Hydrogen

Sulphur, Oxygen

Hydrogen, Oxygen

10 / 10

Ammonia is produced by the reaction of nitrogen and hydrogen at 450 °C, 200 atm pressure in the presence of a catalyst. The process is known as:

Le Chatellier’s process

Direct Process

Haber process

Contact process

Your score is

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Chapter 10 – Acids, Bases and Salts

Practice Tests

Chapter 10 Practice MCQs Test No 1

Chapter 10 Practice MCQs Test No 1

Class 10 Chemistry
Chapter 10
Practice MCQs Test No 1

1 / 10

What is the colour of phenolphthalein in acidic medium?

Pink

Orange

Colourless

Red

2 / 10

Colour of methyl red in solution of pH=9 is:

Yellow

Blue

Red

Pink

3 / 10

The gastric juice has pH=1. It means a:

Strongly basic solution

Strongly acidic solution

Slightly acidic solution

Slightly basic solution

4 / 10

Acid rain has pH less than:

6.5

9.5

7.5

8.5

5 / 10

At what pH does Phenolphthalein change its colour?

5.5

6 / 10

What is the colour of methyl red in basic solution?

Pink

Yellow

Orange

Red

7 / 10

Which of the following is a Lewis base?

BF₃

F^-

AlCl₃

HCl

8 / 10

KW is called ionization constant of water. Its value can be obtained by:

Multiplying [H⁺] and [OH^-]

Multiplying [H⁺] and [H₂O]

Dividing [H⁺] and [OH^-]

Adding [H⁺] and [OH^-]

9 / 10

Which of the following cannot be classified as Arrhenius acid?

H₂SO₄

HNO₃

CO₂

H₂CO₃

10 / 10

Which of the following acids is used in the manufacturing of many chemicals, drugs, dyes, paints and explosives?

HCl

H₂SO₄

HNO₃

H₃PO₄

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Chapter 10 Practice MCQs Test No 2

Chapter 10 Practice MCQs Test No 2

Class 10 Chemistry
Chapter 10
Practice MCQs Test No 2

1 / 10

_________ is used to make liquid soap and shaving cream.

Ca(OH)₂

Mg(OH)₂

NaOH

KOH

2 / 10

A drain cleaner solution contains 1.0 × 10^-8 M, OH^- concentration. This solution is:

Cannot be predicted

Neutral

Acidic

Basic

3 / 10

The pH of Lemon juice is '2’. The H⁺ ion concentration [H⁺] in the lemon juice is:

10² M

0.2 M

10^-2 M

2.0 M

4 / 10

When [H⁺] < 1 × 10^-7 M, then solution will be:

Neutral

Basic

Acidic

Amphoteric

5 / 10

What is the particular pH range at which potatoes grow?

6.5 - 7.5

6.0 - 7.5

5.5 - 6.5

5.5 - 7.0

6 / 10

NH₃ cannot be classified as a base by:

All of these

Bronsted - Lowery Theory

Lewis Theory

Arrhenius Theory

7 / 10

In the following reaction which species is donating an electron pair?
NH₃ + BF₃ → H₃N-BF₃

BF₃

8 / 10

Green colour in firework is produced by the use of:

BaSO₄

Ba(OH)₂

Ba(NO₃)₂

BaCO₃

9 / 10

Which of the following is a Lewis base?

BF₃

AlCl₃

HCl

Cl^-

10 / 10

Consider the following reaction, H₂O + HCl ⇌ H₃O⁺ + Cl^-, which species is an electron pair acceptor in this reaction?

HCl

H₃O⁺

Cl^-

H₂O

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Chapter 10 Practice MCQs Test No 3

Chapter 10 Practice MCQs Test No 3

Class 10 Chemistry
Chapter 10
Practice MCQs Test No 3

1 / 10

_________ is used to make mortar, plasters and cement.

𝑀𝑔(𝑂𝐻)₂

𝐶𝑎(𝑂𝐻)₂

𝐾𝑂𝐻

𝑁𝑎𝑂𝐻

2 / 10

Which of the following acid is used for cleaning of metals, bricks and removing scale from boilers?

𝐻₂𝑆𝑂₄

𝐻₃𝑃𝑂₄

𝐻𝑁𝑂₃

𝐻𝐶𝑙

3 / 10

Which of the following acids is used in the manufacturing of fertilizers and explosives?

𝐻₃𝑃𝑂₄

𝐻₂𝑆𝑂₄

𝐻𝐶𝑙

𝐻𝑁𝑂₃

4 / 10

What is the concentration of 𝐻⁺ ion in the milk of magnesia?

10^-8

10^-9

10^-10

10^-7

5 / 10

The optimum pH range of a swimming pool is:

7.2 - 7.6

7.0 - 7.6

7.2 - 7.5

7.0 - 7.5

6 / 10

What is the particular pH range at which carrots grow?

5.5 - 7.0

6.5 - 7.0

6.0 - 7.5

6.5 - 7.5

7 / 10

What is the particular pH range at which tomatoes grow?

5.5 - 7.0

6.5 - 7.5

6.5 - 7.0

6.0 - 7.5

8 / 10

What is the particular pH range at which apples grow?

6.5 - 7.5

6.0 - 7.5

6.5 - 7.0

5.5 - 7.0

9 / 10

Which substance is used as antacid and laxative?

𝐶𝑎(𝑂𝐻)₂

𝑁𝑎𝑂𝐻

𝐾𝑂𝐻

𝑀𝑔(𝑂𝐻)₂

10 / 10

What is the particular pH range at which onions grow?

6.5 - 7.5

6.0 - 7.5

6.5 - 7.0

5.5 - 7.0

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Chapter 10 Practice MCQs Test No 4

Chapter 10 Practice MCQs Test No 4

Class 10 Chemistry
Chapter 10
Practice MCQs Test No 4

1 / 8

Milk of magnesia neutralizes excess stomach acid, which salt is formed in this reaction?

𝑀𝑔𝑂

𝑀𝑔𝐶𝑙₂

𝑀𝑔𝑆𝑂₄

𝑀𝑔𝐶𝑂₃

2 / 8

Chemical formula of Soda ash is:

𝑁𝑎𝑂𝐻

𝑀𝑔(𝑂𝐻)₂

𝐾𝑂𝐻

𝑁𝑎₂𝐶𝑂₃

3 / 8

Choose Lewis acid:

𝑁𝐻₃

𝐻₂O

𝐶𝑁⁻

𝐻⁺

4 / 8

What is the colour of methyl red in acidic medium?

Red

Orange

Pink

Colourless

5 / 8

What is the colour of phenolphthalein in basic medium?

Pink

Colourless

Red

Orange

6 / 8

Ammonia is a base because it:

Can accept proton

Contains OH group

Ionizes in water to give 𝑂𝐻⁻ ions

Can accept an electron pair

7 / 8

At what pH does methyl red change its colour?

5.5

8 / 8

The main component of gastric juice in the stomach is:

𝐻₃𝑃𝑂₄

𝐻𝑁𝑂₃

𝐻₂𝑆𝑂₄

𝐻𝐶𝑙

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Quiz Tests

Chapter 10 MCQs Quiz Test No 1

Chapter 10 MCQs Quiz Test No 1

Class 10 Chemistry
Chapter 10
MCQs Quiz Test No 1

1 / 20

KW is called ionization constant of water. Its value can be obtained by:

Multiplying [H⁺] and [H₂O]

Adding [H⁺] and [OH^-]

Dividing [H⁺] and [OH^-]

Multiplying [H⁺] and [OH^-]

2 / 20

When [H⁺] < 1 × 10^-7 M, then solution will be:

Acidic

Neutral

Basic

Amphoteric

3 / 20

The pH of Lemon juice is '2’. The H⁺ ion concentration [H⁺] in the lemon juice is:

0.2 M

10^-2 M

10² M

2.0 M

4 / 20

Acid rain has pH less than:

8.5

9.5

6.5

7.5

5 / 20

What is the colour of phenolphthalein in acidic medium?

Colourless

Red

Orange

Pink

6 / 20

Which of the following acids is used in the manufacturing of many chemicals, drugs, dyes, paints and explosives?

H₃PO₄

HCl

HNO₃

H₂SO₄

7 / 20

A drain cleaner solution contains 1.0 × 10^-8 M, OH^- concentration. This solution is:

Neutral

Basic

Acidic

Cannot be predicted

8 / 20

Which of the following is a Lewis base?

AlCl₃

BF₃

F^-

HCl

9 / 20

Green colour in firework is produced by the use of:

BaSO₄

Ba(OH)₂

Ba(NO₃)₂

BaCO₃

10 / 20

NH₃ cannot be classified as a base by:

Bronsted - Lowery Theory

Arrhenius Theory

All of these

Lewis Theory

11 / 20

What is the particular pH range at which potatoes grow?

6.0 - 7.5

5.5 - 6.5

6.5 - 7.5

5.5 - 7.0

12 / 20

What is the colour of methyl red in basic solution?

Red

Pink

Yellow

Orange

13 / 20

_________ is used to make liquid soap and shaving cream.

KOH

Mg(OH)₂

NaOH

Ca(OH)₂

14 / 20

The gastric juice has pH=1. It means a:

Strongly acidic solution

Strongly basic solution

Slightly basic solution

Slightly acidic solution

15 / 20

In the following reaction which species is donating an electron pair?
NH₃ + BF₃ → H₃N-BF₃

BF₃

16 / 20

At what pH does Phenolphthalein change its colour?

5.5

17 / 20

Colour of methyl red in solution of pH=9 is:

Pink

Yellow

Red

Blue

18 / 20

Which of the following is a Lewis base?

Cl^-

HCl

AlCl₃

BF₃

19 / 20

Consider the following reaction, H₂O + HCl ⇌ H₃O⁺ + Cl^-, which species is an electron pair acceptor in this reaction?

H₂O

Cl^-

H₃O⁺

HCl

20 / 20

Which of the following cannot be classified as Arrhenius acid?

HNO₃

H₂SO₄

H₂CO₃

CO₂

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Chapter 10 MCQs Quiz Test No 2

Chapter 10 MCQs Quiz Test No 2

Class 10 Chemistry
Chapter 10
MCQs Quiz Test No 2

1 / 18

Choose Lewis acid:

𝐻⁺

𝐻₂O

𝑁𝐻₃

𝐶𝑁⁻

2 / 18

What is the particular pH range at which apples grow?

6.5 - 7.5

5.5 - 7.0

6.0 - 7.5

6.5 - 7.0

3 / 18

Which substance is used as antacid and laxative?

𝐶𝑎(𝑂𝐻)₂

𝐾𝑂𝐻

𝑀𝑔(𝑂𝐻)₂

𝑁𝑎𝑂𝐻

4 / 18

What is the particular pH range at which carrots grow?

6.0 - 7.5

6.5 - 7.5

6.5 - 7.0

5.5 - 7.0

5 / 18

What is the colour of phenolphthalein in basic medium?

Pink

Colourless

Orange

Red

6 / 18

Ammonia is a base because it:

Ionizes in water to give 𝑂𝐻⁻ ions

Can accept proton

Can accept an electron pair

Contains OH group

7 / 18

What is the particular pH range at which onions grow?

5.5 - 7.0

6.0 - 7.5

6.5 - 7.5

6.5 - 7.0

8 / 18

_________ is used to make mortar, plasters and cement.

𝐾𝑂𝐻

𝑀𝑔(𝑂𝐻)₂

𝐶𝑎(𝑂𝐻)₂

𝑁𝑎𝑂𝐻

9 / 18

The optimum pH range of a swimming pool is:

7.0 - 7.5

7.2 - 7.5

7.2 - 7.6

7.0 - 7.6

10 / 18

Chemical formula of Soda ash is:

𝑀𝑔(𝑂𝐻)₂

𝐾𝑂𝐻

𝑁𝑎₂𝐶𝑂₃

𝑁𝑎𝑂𝐻

11 / 18

What is the concentration of 𝐻⁺ ion in the milk of magnesia?

10^-9

10^-8

10^-7

10^-10

12 / 18

What is the colour of methyl red in acidic medium?

Colourless

Pink

Orange

Red

13 / 18

Milk of magnesia neutralizes excess stomach acid, which salt is formed in this reaction?

𝑀𝑔𝐶𝑂₃

𝑀𝑔𝐶𝑙₂

𝑀𝑔𝑆𝑂₄

𝑀𝑔𝑂

14 / 18

Which of the following acid is used for cleaning of metals, bricks and removing scale from boilers?

𝐻𝑁𝑂₃

𝐻𝐶𝑙

𝐻₃𝑃𝑂₄

𝐻₂𝑆𝑂₄

15 / 18

At what pH does methyl red change its colour?

5.5

16 / 18

Which of the following acids is used in the manufacturing of fertilizers and explosives?

𝐻𝐶𝑙

𝐻₂𝑆𝑂₄

𝐻𝑁𝑂₃

𝐻₃𝑃𝑂₄

17 / 18

The main component of gastric juice in the stomach is:

𝐻₂𝑆𝑂₄

𝐻₃𝑃𝑂₄

𝐻𝑁𝑂₃

𝐻𝐶𝑙

18 / 18

What is the particular pH range at which tomatoes grow?

5.5 - 7.0

6.0 - 7.5

6.5 - 7.0

6.5 - 7.5

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Chapter 11 – Organic Chemistry

Practice Tests

Chapter 11 Practice MCQs Test No 1

Chapter 11 Practice MCQs Test No 1

Class 10 Chemistry
Chapter 11
Practice MCQs Test No 1

1 / 10

If an alkane is having '5’ carbon atoms then the number of Hydrogen atoms in this alkane will be:

2 / 10

The general formula of alkane is:

C_n H_2n+2

C_n H_2n+1

C_n H_2n

C_n H_2n+3

3 / 10

In which of the following hydrocarbons, oxygen is attached to two alkyl groups?

Aldehydes

Esters

Ethers

Ketones

4 / 10

Which coloured solution is produced, when Ketones are mixed with alkaline sodium nitro-prusside solution?

Red

Green

Orange

Blue

5 / 10

Formic acid contains functional group:

–CO-

-OH

-COOH

-CHO

6 / 10

Phenol gives _______ ppt with bromine water.

Green

White

Red

Black

7 / 10

Pitch is produced by:

Coal gas

Coal

Coal tar

Petroleum

8 / 10

Which of the following is a heterocyclic compound?

Cyclohexane

Thiophene

Cyclopentene

Benzene

9 / 10

__________ is used for artificial ripening of fruits.

Ethylene

Acetylene

Benzene

Methanol

10 / 10

Which of the following is a homocyclic compound?

Pyridine

Thiophene

Benzene

Furan

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Chapter 11 Practice MCQs Test No 2

Chapter 11 Practice MCQs Test No 2

Class 10 Chemistry
Chapter 11
Practice MCQs Test No 2

1 / 10

Destructive distillation of coal gives:

All of these

Coal gas

Coal tar

Coke

2 / 10

The suffix in the name of an organic compound tells the:

Number of Carbon atoms in the compound

Class of the compound

Homology of the compound

Isomerism of the compound

3 / 10

The IUPAC name has _____ parts.

4 / 10

Self-linking ability of carbon is called:

Isomerism

Homologous

Homology

Catenation

5 / 10

The part of the name of an organic compound that tells the number of carbon atoms in the chain is called:

Catenation

Suffix

Class

Stem

6 / 10

Aldehyde gives _______ precipitate with Fehling’s solution.

Black

Red

Green

White

7 / 10

__________ is used as a solvent for fats, oils, paints and varnishes.

Methanol

Ethylene

Benzene

Acetylene

8 / 10

Which of the following is the general formula of Ether?

R-O-{ R }^{ ' }

\begin{matrix} O\quad \\ ||\quad \\ \begin{matrix} R- & \quad C & - \end{matrix}O{ R }^{ ' } \end{matrix}

\begin{matrix} \quad O\quad \\ \quad ||\quad \\ \begin{matrix} R\quad - & C & - \end{matrix}{ R }^{ ' } \end{matrix}

R-OH

9 / 10

A series of related compounds in which any two adjacent molecules differ by -CH₂- group is called _______ series.

Homology

Functional group

Homologous

Isomerism

10 / 10

What is the structural formula of Pyridine?

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Chapter 11 Practice MCQs Test No 3

Chapter 11 Practice MCQs Test No 3

Class 10 Chemistry
Chapter 11
Practice MCQs Test No 3

1 / 10

Stem "But" stands for how many carbon atoms?

2 / 10

Which of the following is an Ether?

CH₃-CH₂-O-CH₂-CH₃

CH₃-CH₂-COOH

C₆H₅-OH

CH₃-CH₂-OH

3 / 10

Compound of _________ helps to ensure antiseptic conditions in hospitals operating rooms.

Alcohol

Ether

Phenol

Aldehyde

4 / 10

n-pentane: iso-pentane and neo pentane are having different:

Molecular masses

Number of H-atoms

Structures

Molecular formulas

5 / 10

Which compound is not a saturated hydrocarbon?

CH₃-CH=CH₂

CH₃-CH₂-CH₃

CH₄

CH₃-CH₃

6 / 10

Which is an alcohol?

CH₃-CH₂-NH₂

CH₃-CH₂-O-CH₂-CH₃

CH₃-CH₃-COOH

CH₃-OH

7 / 10

The general formula of alkynes is:

CnH2n

CnH2n-1

CnH2n+2

CnH2n-2

8 / 10

The functional group $\begin{matrix} O\quad \\ ||\quad \\ \begin{matrix} - & C & - \end{matrix}H \end{matrix}$ is found in:

Aldehydes

Ketones

Alcohols

Ethers

9 / 10

Which of the following is the functional group of amine?

-OH

–CHO

-COOH

-NH2

10 / 10

The general formula for Amines is:

R-NH4

R-NH

R-NH2

R-NH3

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Quiz Tests

Chapter 11 MCQs Quiz Test No 1

Chapter 11 MCQs Quiz Test No 1

Class 10 Chemistry
Chapter 11
MCQs Quiz Test No 1

1 / 15

n-pentane: iso-pentane and neo pentane are having different:

Molecular masses

Number of H-atoms

Structures

Molecular formulas

2 / 15

Formic acid contains functional group:

-CHO

-OH

-COOH

–CO-

3 / 15

The general formula for Amines is:

R-NH

R-NH4

R-NH3

R-NH2

4 / 15

In which of the following hydrocarbons, oxygen is attached to two alkyl groups?

Aldehydes

Ethers

Esters

Ketones

5 / 15

Compound of _________ helps to ensure antiseptic conditions in hospitals operating rooms.

Ether

Aldehyde

Phenol

Alcohol

6 / 15

If an alkane is having '5’ carbon atoms then the number of Hydrogen atoms in this alkane will be:

7 / 15

Which of the following is a heterocyclic compound?

Thiophene

Benzene

Cyclohexane

Cyclopentene

8 / 15

__________ is used for artificial ripening of fruits.

Methanol

Ethylene

Acetylene

Benzene

9 / 15

Pitch is produced by:

Coal

Petroleum

Coal gas

Coal tar

10 / 15

Which coloured solution is produced, when Ketones are mixed with alkaline sodium nitro-prusside solution?

Green

Blue

Orange

Red

11 / 15

Stem "But" stands for how many carbon atoms?

12 / 15

Phenol gives _______ ppt with bromine water.

Black

Green

Red

White

13 / 15

The general formula of alkane is:

C_n H_2n+2

C_n H_2n

C_n H_2n+1

C_n H_2n+3

14 / 15

Which of the following is a homocyclic compound?

Pyridine

Benzene

Thiophene

Furan

15 / 15

The functional group $\begin{matrix} O\quad \\ ||\quad \\ \begin{matrix} - & C & - \end{matrix}H \end{matrix}$ is found in:

Alcohols

Ketones

Aldehydes

Ethers

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Chapter 11 MCQs Quiz Test No 2

Chapter 11 MCQs Quiz Test No 2

Class 10 Chemistry
Chapter 11
MCQs Quiz Test No 2

1 / 15

The general formula of alkynes is:

CnH2n-1

CnH2n+2

CnH2n

CnH2n-2

2 / 15

Which compound is not a saturated hydrocarbon?

CH₄

CH₃-CH₃

CH₃-CH₂-CH₃

CH₃-CH=CH₂

3 / 15

Which is an alcohol?

CH₃-CH₂-O-CH₂-CH₃

CH₃-CH₃-COOH

CH₃-CH₂-NH₂

CH₃-OH

4 / 15

Which of the following is an Ether?

C₆H₅-OH

CH₃-CH₂-COOH

CH₃-CH₂-OH

CH₃-CH₂-O-CH₂-CH₃

5 / 15

The IUPAC name has _____ parts.

6 / 15

The part of the name of an organic compound that tells the number of carbon atoms in the chain is called:

Suffix

Stem

Catenation

Class

7 / 15

Which of the following is the functional group of amine?

–CHO

-COOH

-NH2

-OH

8 / 15

A series of related compounds in which any two adjacent molecules differ by -CH₂- group is called _______ series.

Isomerism

Homologous

Functional group

Homology

9 / 15

Self-linking ability of carbon is called:

Homology

Isomerism

Homologous

Catenation

10 / 15

The suffix in the name of an organic compound tells the:

Homology of the compound

Class of the compound

Isomerism of the compound

Number of Carbon atoms in the compound

11 / 15

__________ is used as a solvent for fats, oils, paints and varnishes.

Acetylene

Ethylene

Methanol

Benzene

12 / 15

Destructive distillation of coal gives:

Coal gas

Coal tar

All of these

Coke

13 / 15

What is the structural formula of Pyridine?

14 / 15

Which of the following is the general formula of Ether?

R-OH

R-O-{ R }^{ ' }

\begin{matrix} \quad O\quad \\ \quad ||\quad \\ \begin{matrix} R\quad - & C & - \end{matrix}{ R }^{ ' } \end{matrix}

\begin{matrix} O\quad \\ ||\quad \\ \begin{matrix} R- & \quad C & - \end{matrix}O{ R }^{ ' } \end{matrix}

15 / 15

Aldehyde gives _______ precipitate with Fehling’s solution.

Black

Red

Green

White

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Chapter 12 – Hydrocarbons

Practice Tests

Chapter 12 Practice MCQs Test No 1

Chapter 12 Practice MCQs Test No 1

Class 10 Chemistry
Chapter 12
Practice MCQs Test No 1

1 / 10

Which of the following reacts explosively with methane?

Cl₂

Br₂

F₂

I₂

2 / 10

Which of the following is evolved during the ripening of fruits and vegetables?

Ethene

Ethane

Methane

Ethanal

3 / 10

The reduction of alkyl halides takes place in the presence of:

Al₂O₃ at 350°C

Zinc + Dust

Conc. H₂SO₄ at 170°C

Zn + HCl

4 / 10

Reduction of Ethylchloride (C₂H₅Cl) produces:

Ethylalcohol

Ethane

Ethyne

Ethene

5 / 10

Which of the following is used for dehydrohalogenation of alkyl halides?

Alcoholic KOH

Br₂ water

Conc. H₂ SO₄

Al₂O₃

6 / 10

By dehydration we mean the removal of:

H₂

HCl

H₂O₂

H₂O

7 / 10

Which of the following reacts with concentrated alkaline KMnO₄ to produce oxalic acid?

Ethane

Ethene

Ethanol

Ethyne

8 / 10

The general formula of alkane is:

C_nH_2n+2

C_nH_2n+3

C_nH_2n

C_nH_2n+1

9 / 10

Which of the following is used as domestic fuel?

Ethyne

Chloroform

Methane

Ethanol

10 / 10

Which process produces an alkane?

Dehydration

Hydration

Combustion

Hydrogenation

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Chapter 12 Practice MCQs Test No 2

Chapter 12 Practice MCQs Test No 2

Class 10 Chemistry
Chapter 12
Practice MCQs Test No 2

1 / 10

The red color of tomatoes is due to an _______ called Lycopene.

Alkene

Alkane

Alkyne

Alcohol

2 / 10

What percent of an alkaline aqueous solution of KMnO₄ is used to detect the presence of an Alkene?

0.01%

0.001%

0.1%

3 / 10

_________ is used as an anti-freeze.

Ethylene glycol

Ethyne

Vicinal dihalide

Ethylene

4 / 10

Which product is obtained when chloromethane (or methyl chloride) is reduced?

Ethyne

Ethene

Methane

Ethane

5 / 10

Which of the following substance reacts with KMnO₄ to produce ethyleneglycol?

Ethyne

Ethane

Acetylene

Ethene

6 / 10

__________ is used to manufacture urea fertilizer.

Ethane

Ethene

Ethyne

Methane

7 / 10

The general formula of alkynes is:

C_nH_2n

C_nH_2n-2

C_nH_2n+2

C_nH_2n-1

8 / 10

Acetylene is also known as:

Methane

Ethene

Ethyne

Ethane

9 / 10

Complete the following reaction:

$CH\equiv CH+{ H }_{ 2 }^{ \quad }\xrightarrow [ Ni ]{ 200-300{°C} }$

{ CH }_{ 2 }\equiv { CH }_{ 2 }

{ CH }_{ 2 }={ CH }_{ 2 }

{ CH }_{ 3 }-{ CH }_{ 3 }

{ CH }_{ 2 }-{ CH }_{ 2 }

10 / 10

Ethylene is also known as:

Methane

Ethene

Ethane

Ethyne

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Practice Tests

Exercise MCQs Practice Test
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Quiz Test

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Chapter 13 – Biochemistry

Practice Tests

Exercise MCQs Practice Test
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Quiz Test

Chapter 13 MCQs Grand Test

Chapter 14 – Environmental Chemistry I : Atmosphere

Practice Tests

Exercise MCQs Practice Test
Past Papers MCQs Practice Test
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Quiz Test

Chapter 14 MCQs Grand Test

Chapter 15 – Environmental Chemistry II : Water

Practice Tests

Exercise MCQs Practice Test
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Chapter 15 MCQs Grand Test

Chapter 16 – Chemical Industries

Practice Tests

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Past Paper 2019 (Local)
MCQs Practice Test

/12

Class 10 Chemistry
Past Paper 2019 (Local)
Practice MCQs Test

1 / 12

Chemical formula of ammonium carbamate is:

{ NH }_{ 2 }COON{ H }_{ 4 }

{ NH }_{ 4 }N{ O }_{ 3 }

{ (NH }_{ 4 })_{ 2 }SO_{ 4 }

{ NH }_{ 2 }CON{ H }_{ 2 }

2 / 12

What will happen if $[O{ H }^{ - }]$ increases?

Solution becomes Neutral

Solution becomes Basic

Solution becomes unpredictable

Solution becomes acidic

3 / 12

What are the units of Kc for
${ N }_{ 2(g) }+{ O }_{ 2(g) }\rightleftharpoons 2{ N }_{ 2(g) }$ ?

No units

{ dm }^{ 3 }.{ mol }^{ -1 }

{ mol } { dm }^{ -3 }

{ mol }^{ 2 }.{ dm }^{ -6 }

4 / 12

The substance which fight against diseases in living organisms are:

Lipids

Carbohydrates

Proteins

Enzymes

5 / 12

Fehling’s solution is used to determine the presence of:

Ketone

Alcohol

Aldehyde and Ketone

Phenol

6 / 12

Which of the following is an aldehyde?

{ CH }_{ 3 }COOH

{ C }_{ 6 }{ H }_{ 5 }OH

{ CH }_{ 3 }{ CH }_{ 2 }CHO

{ CH }_{ 3 }{ COCH }_{ 3 }

7 / 12

Each DNA nucleotide consists of:

5 components

2 components

3 components

4 components

8 / 12

Which of the following process is reduction in nature?

Grinding

Roasting

Smelting

Floatation

9 / 12

Permanent hardness of water can be removed by:

Boiling

Ion exchange method

Clark’s method

Cooling

10 / 12

Raffinose produces ______ units of simple sugars when hydrolyzed.

11 / 12

Which of the following is a Lewis acid?

N{ H }_{ 3 }

O{ H }^{ - }

B{ F }_{ 3 }

{ F }^{ - }

12 / 12

Identify molecule produced when electrical discharges pass through oxygen in air:

\frac { 1 }{ 2 } { O }_{ 2 }

{ O }_{ 2 }

{ O }_{ 4 }

{ O }_{ 3 }

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/12

Class 10 Chemistry
Past Paper 2019 (Overseas)
Practice MCQs Test

1 / 12

Baeyer’s test is used to detect the presence of:

Alkene

Alkane

Aldehyde

Ketone

2 / 12

Identify the compound responsible for acid rain:

Chlorofluorocarbons

Sulphur dioxide

Vicinal dihalide

Glyoxal

3 / 12

The volumetric ratio between hydrogen and oxygen in water is:

2:01

1:08

3:01

2:02

4 / 12

Percentage of nitrogen in urea is:

46.6

21.2

5 / 12

A drain cleaner contains 1.0 × ${ 10 }^{ -8 }$ M, ${ OH }^{ - }$ concentration, this solution is:

Unpredictable

Neutral

Basic

Acidic

6 / 12

Which compound has two halogen atoms on adjacent carbon atoms?

Vicinal dihalide

Alkyle halide

Ether

Ester

7 / 12

In the given reaction which species is donating an electron pair?
${ NH }_{ 3 }+{ BF }_{ 3 }\rightarrow { H }_{ 3 }N-{ BF }_{ 3 }$

{ BF }_{ 3 }

8 / 12

The word vitamin was first used by:

C. Eijkman

Casmir Funk

F.G. Hopkins

Francis Crick

9 / 12

Formic acid contains _______ functional group.

−CHO

−COOH

−OH

−CO−

10 / 12

For which reaction Kc has NO units?

2ICl\rightleftharpoons I_{ 2 }+{ Cl }_{ 2 }

PC{ l }_{ 5 }\rightleftharpoons PCl_{ 3 }+{ Cl }_{ 2 }

2N{ O }_{ 2 }\rightleftharpoons { N }_{ 2 }{ O }_{ 4 }

{ N }_{ 2 }+3{ H }_{ 2 }\rightleftharpoons 2N{ H }_{ 3 }

11 / 12

Halite is an ore of:

Copper

Sodium

Zinc

Iron

12 / 12

The linkage which joins two amino acids is called:

Peptide Bond

Covalent Bond

Metallic Bond

Ionic Bond

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MCQs Practice Test

/12

Class 10 Chemistry
Past Paper 2018 (Local)
Practice MCQs Test

1 / 12

What is the colour of phenolphthalein in acidic medium?

Red

Pink

Colourless

Orange

2 / 12

Which of following reacts with concentrated alkaline KMn ${ O }_{ 4 }$ to produce oxalic acid?

Ethene

Ethyne

Ethanol

Ethane

3 / 12

Which of the following is used as raw material for preparation of urea?

{ NH }_{ 3 }

and NaCl

{ CO }_{ 2 }

and

{ NH }_{ 3 }

{ H }_{ 2 }O

and

{ NH }_{ 3 }

{ CO }_{ 2 }

and

{ Ca(OH) }_{ 2 }

4 / 12

Which of the following is a Lewis base?

HCl

B{ F }_{ 3 }

AlCl_{ 3 }

{ F }^{ - }

5 / 12

Plants convert glucose into:

Proteins

Starch

Lipids

Amino acids

6 / 12

Which of the following layers contains ozone gas?

Troposphere

Mesosphere

Stratosphere

Thermosphere

7 / 12

In an irreversible reaction, equilibrium is:

Established slowly

Never established

Established quickly

Established when reaction stops

8 / 12

Which of the following is a heterocyclic compound?

Thiophene

Cyclohexane

Cyclopentene

Benzene

9 / 12

Which of the following is used as domestic fuel?

Methane

Chloroform

Ethyne

Ethanol

10 / 12

Which of the following is not a waterborne disease?

Dysentery

Typhoid

Anemia

Hepatitis

11 / 12

Most of air pollution is caused by:

The burning of fossil fuels

Acid rain

Ozone

12 / 12

Formic acid contains functional group:

−COOH

−CO−

−CHO

−OH

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/12

Class 10 Chemistry
Past Paper 2018 (Overseas)
Practice MCQs Test

1 / 12

Which of the following is used as raw material for Solvay process?

{ NH }_{ 3 }

and Brine

{ NH }_{ 3 }

and CO

Ca{ (OH) }_{ 2 }

and

{ CH }_{ 4 }

{ CH }_{ 4 }

and

{ CO }_{ 2 }

2 / 12

Which of the following is a homocyclic compound?

Benzene

Pyridine

Thiophene

Furan

3 / 12

Which of the following is not a source of starch?

Rice

Wheat

Potato

Cotton

4 / 12

Which of the following is used for ripening of fruits?

Ethanol

Ethyne

Benzene

Methane

5 / 12

What is the colour of methyl red in basic solution?

Red

Orange

Yellow

Pink

6 / 12

Which of the following causes brain damage in children?

{ SO_{ 2 } }

{ CO_{ 2 } }

Ozone

Lead compounds

7 / 12

Which of the following is used for dehydrohalogenation of alkyl halides?

Conc.

{ { H }_{ 2 }SO }_{ 4 }

Alcoholic KOH

{ Br_{ 2 } }

water

{ Al_{ 2 }{ O }_{ 3 } }

8 / 12

Which of the following is responsible for acid rain?

{ O_{ 3 } }

{ SO_{ 2 } }

{ CH_{ 4 } }

9 / 12

The density of water is maximum at:

-4 °C

4 °C

100 °C

0 °C

10 / 12

Which of the following cannot be classified as Arrhenius acid?

{ { H }_{ 2 }CO }_{ 3 }

{ { H }_{ 2 }SO }_{ 4 }

{ CO }_{ 2 }

{ HNO }_{ 3 }

11 / 12

In which of the following compounds, oxygen is attached to two alkyl groups?

Alcohols

Phenols

Ethers

Esters

12 / 12

Which of the following does not happen, when a system is at equilibrium state?

Forward and reverse reactions occur at same rate

Forward and reverse reactions stop

Concentration of reactants and products stop changing

Reaction continues to occur in both the directions

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/12

Class 10 Chemistry
Past Paper 2017 (Local)
Practice MCQs Test

1 / 12

Which scientist proposed the law of mass action?

C.M Wanderwal

C.M. Gulder

C.M. Guldberg

C.M. Lewis

2 / 12

At equilibrium state of a reversible reaction:

Concentration of reactants and products become constant.

Concentrations of reactants and products become equal

Concentrations of the reactants become zero

Forward and reverse reactions are stopped

3 / 12

For a general reaction 2A + B $\rightleftharpoons$ 2C + D the rate of forward reaction will be equal to:

{ K }_{ f }[A][B]

{ K }_{ f }{ [A] }^{ 2 }[B]

{ K }_{ f }[2A][B]

{ K }_{ f }{ [A] }^{ 2 }+[B]

4 / 12

Which of the following is evolved during the ripening of fruits and vegetables?

Ethane

Ethene

Ethanal

Methane

5 / 12

Ultraviolet radiations are absorbed by ozone in the stratosphere, that is why:

Temperature of stratosphere increases

Ozone layer is destroyed

Ozone holes are formed

Temperature of stratosphere decreases

6 / 12

If an alkane is having '5’ carbon atoms then the number of Hydrogen atoms in this alkane will be:

7 / 12

The gastric juice has pH= 1 It means a ___________________ solution.

Slightly acidic

Strongly basic

Strongly acidic

Slightly basic

8 / 12

By dehydration we mean the removal of:

{ H }_{ 2 }O

{ H }_{ 2 }

{ H }_{ 2 }{ O }_{ 2 }

HCl

9 / 12

Ice floats over liquid water because:

Its density is less than water

Its mass is less than water

Its volume is less than water

Its temperature is less than water

10 / 12

Marble buildings and statues are destroyed by acid rain due to reaction of Sulphuric acid with:

FeSO_{ 4 }

CaCO_{ 3 }

Ca(N{ O }_{ 3 })_{ 2 }

11 / 12

${ K }_{ w }$ is called ionization constant of water. Its value can be obtained by:

Multiplying

{ H }^{ + }

𝑎𝑛𝑑

{ H }_{ 2 }O

Multiplying

{ H }^{ + }

and

{ OH }^{ - }

Adding

{ H }^{ + }

and

{ OH }^{ - }

Dividing

{ H }^{ + }

and

{ OH }^{ - }

12 / 12

n-pentane: iso-pentane and neo pentane are having different:

Number of H-atoms

Molecular masses

Structures

Molecular formulas

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/11

Class 10 Chemistry
Past Paper 2017 (Overseas)
Practice MCQs Test

1 / 11

Which of the following is an ore of Aluminum?

Haematite

Magnetite

Halite

Bauxite

2 / 11

Reduction of Ethylchloride ( ${ C }_{ 2 }{ H }_{ 5 }Cl$ ) produces.

Ethene

Ethyne

Ethane

Ethylalcohol

3 / 11

The pH of Lemon juice is ‘2’. The ${ H }^{ + }$ ion concentration ${ H }^{ + }$ in the lemon juice is:

2.0 M

0.2 M

{ 10 }^{ -2 }

{ 10 }^{ 2 }

4 / 11

The emission of 𝐶𝑂, 𝑁𝑂 and unburned hydrocarbons can be reduced by using:

Incinerators

Catalytic converters

Filter Plants

Green houses

5 / 11

Which of the following substance reacts with to produce ethyleneglycol?

Ethane

Ethyne

Ethene

Acetylene

6 / 11

On boiling temporary hard water, the substance which is settled down is:

CaCO_{ 3 }

Mg(HC{ O }_{ 3 })_{ 2 }

CaCl_{ 2 }

Ca(HC{ O }_{ 3 })_{ 2 }

7 / 11

Which of the following is a heterocyclic compound?

Benzene

Cyclohexane

Pyridine

neo-pentane

8 / 11

For a reversible reaction K = $\frac { { [C] }^{ 2 } }{ [A][B] }$ . The correct equation of above expression is:

A + B

\rightarrow

\rightleftharpoons

A + B

{ C }_{ 2 }\rightleftharpoons

A+B

A + B

\rightleftharpoons

9 / 11

Which of the following is used as Antacid?

Mg{ (OH) }_{ 2 }

Ca{ (OH) }_{ 2 }

KOH

NaOH

10 / 11

What happens when ammonium carbamate is distilled with steam?

Urea solution is produced

Ammonia is produced

Carbon dioxide is produced

Ammonium hydroxide is produced

11 / 11

Addition of Hydrogen in the vegetable oil is due to presence of:

H - O bonds

C - C bonds

C - H bonds

C = C bonds

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/12

Class 10 Chemistry
Past Paper 2016 (Local)
Practice MCQs Test

1 / 12

Raffinose ( ${ C }_{ 18 }{ H }_{ 32 }{ O }_{ 16 }$ ) on hydrolysis forms ______ simple sugars.

Polysaccharide

Trisaccharide

Disaccharide

Monosaccharide

2 / 12

Highest temperature in Mesosphere is:

−5 °C

−60 °C

−55 °C

−93 °C

3 / 12

Chalcopyrite is the ore of:

Aluminium

Iron

Chromium

Copper

4 / 12

By dehydration, we mean the removal of:

Halogen

Water

Hydrogen Halide

Hydrogen

5 / 12

Which of the following is not the macroscopic characteristic of forward reaction?

Reactants produce products

It is written from left to right

Products produce reactants

Rate is fastest in the beginning and gradually slows down

6 / 12

Stem "But" stands for how many carbon atoms?

7 / 12

In the following reaction which species is donating an electron pair?
${ NH }_{ 3 }+{ BF }_{ 3 }rightarrow { H }_{ 3 }N-{ BF }_{ 3 }$

B{ F }_{ 3 }

8 / 12

Formic acid contains functional group:

−CO−

−OH

−CHO

−COOH

9 / 12

Which process produces an alkane?

Hydration

Combustion

Dehydration

Hydrogenation

10 / 12

Which of the following reaction will not have any units for 𝐾𝑐?

All of these

2A_{ (g) }+B_{ (g) }\rightleftharpoons 3AC_{ (g) }

N_{ 2(g) }+O_{ 2(g) }\rightleftharpoons 2N{ O }_{ (g) }

{ H }_{ 2(g) }+C_{ 2(g) }\rightleftharpoons { H }_{ 2 }{ O }_{ (g) }+C{ O }_{ 2(g) }

11 / 12

What is the particular pH range at which potatoes grow?

6.0 − 7.5

5.5 − 6.5

5.5 − 7.0

6.5 − 7.5

12 / 12

Which human activity results in contamination of water bodies?

All of these

Pesticides

Septic tanks

Livestock waste

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/12

Class 10 Chemistry
Past Paper 2016 (Overseas)
Practice MCQs Test

1 / 12

Halite is an ore of:

Zinc

Sodium

Copper

Iron

2 / 12

Formic acid contains _______ functional group.

−CHO

−COOH

−CO−

−OH

3 / 12

The volumetric ratio between hydrogen and oxygen in water is:

3:01

2:01

1:08

2:02

4 / 12

Identify the compound responsible for acid rain:

Glyoxal

Chlorofluorocarbons

Vicinal dihalide

Sulphur dioxide

5 / 12

For which reaction Kc has NO units?

PC{ l }_{ 5 }\rightleftharpoons PCl_{ 3 }+{ Cl }_{ 2 }

2ICl\rightleftharpoons I_{ 2 }+{ Cl }_{ 2 }

2N{ O }_{ 2 }\rightleftharpoons { N }_{ 2 }{ O }_{ 4 }

{ N }_{ 2 }+3{ H }_{ 2 }\rightleftharpoons 2N{ H }_{ 3 }

6 / 12

The word vitamin was first used by:

C. Eijkman

F.G. Hopkins

Francis Crick

Casmir Funk

7 / 12

Baeyer’s test is used to detect the presence of:

Alkane

Alkene

Ketone

Aldehyde

8 / 12

Percentage of nitrogen in urea is:

21.2

46.6

9 / 12

A drain cleaner contains 1.0 × ${ 10 }^{ -8 }$ M, ${ OH }^{ - }$ concentration, this solution is:

Acidic

Neutral

Basic

Unpredictable

10 / 12

The linkage which joins two amino acids is called:

Metallic Bond

Ionic Bond

Covalent Bond

Peptide Bond

11 / 12

Which compound has two halogen atoms on adjacent carbon atoms?

Vicinal dihalide

Alkyle halide

Ether

Ester

12 / 12

In the given reaction which species is donating an electron pair?
${ NH }_{ 3 }+{ BF }_{ 3 }\rightarrow { H }_{ 3 }N-{ BF }_{ 3 }$

{ BF }_{ 3 }

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/12

Class 10 Chemistry
Past Paper 2015 (Local)
Practice MCQs Test

1 / 12

Which is reddish brown gas?

{ O }_{ 3 }

{ NO }_{ 2 }

{ SO }_{ 2 }

2 / 12

Which of the following Salts causes temporary hardness in water?

Both calcium sulphate and magnesium sulphate

Magnesium sulphate

Calcium sulphate

Magnesium Hydrogen carbonate

3 / 12

The disease caused due to the deficiency of Vitamin D is:

Night blindness

Rickets

Hemolysis of Red blood cells

Scurvy

4 / 12

For a reversible reaction K = $\frac { { [C] }^{ 2 } }{ [A][B] }$ . The correct equation of above expression is:

Both A and B

5 / 12

What is the chemical formula of slaked lime?

{ CaCO }_{ 3 }

{ Ca(OH })_{ 3 }

CaO

{ CaCl }_{ 2 }

6 / 12

Sulphur Trioxide is prepared according to the following reaction:
$2SO_{ 2(g) }+O_{ 2(g) }\rightleftharpoons 2S{ O }_{ 3(g) }$
The condition of this reaction is:

V_{ 2 }O_{ 5 }

⁄ 450

^{ O }C

, 200atm

Ni ⁄ 450

^{ O }C

, 200atm

Fe ⁄ 400

^{ O }C

, 200atm

Electric / Spark

7 / 12

The general formula of alkynes is:

C_{ n }{ H }_{ 2n }

C_{ n }{ H }_{ 2n+2 }

C_{ n }{ H }_{ 2n-2 }

C_{ n }{ H }_{ 2n-1 }

8 / 12

Consider the following reaction,
$H_{ 2 }O+HCl\rightleftharpoons { H }_{ 3 }{ O }^{ + }+{ Cl }^{ - }$ ,
which species is an electron pair acceptor in this reaction?

H_{ 2 }O

{ Cl }^{ - }

HCl

{ H }_{ 3 }{ O }^{ + }

9 / 12

Which of the following is an Ether?

{ C }_{ 6 }{ H }_{ 5 }-OH

CH_{ 3 }-CH_{ 2 }-OH

CH_{ 3 }-CH_{ 2 }-O-CH_{ 2 }-C{ H }_{ 3 }

CH_{ 3 }-CH_{ 2 }-COOH

10 / 12

Which is used for dehydro-halogenation?

{ Al_{ 2 }{ O }_{ 3 } }

Bromine water

Conc.

{ { H }_{ 2 }SO }_{ 4 }

Alcoholic KOH

11 / 12

When $H^{ + }$ < 1 × $10^{ -7 }$ M, then solution will be:

Neutral

Acidic

Amphoteric

Basic

12 / 12

Glucose is:

Tetrose

Pentose

Hexose

Class 10 Chemistry MCQs Tests