Class 10 Chemistry Past Papers MCQs Grand Practice Test

Which of the following is not a water borne disease?

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

The linkage which joins two amino acids is called:

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

What is the colour of phenolphthalein in acidic medium?

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

By dehydration we mean the removal of:

Which of the following substance reacts with to produce ethyleneglycol?

Which of the following is not a waterborne disease?

Formic acid contains functional group:

The density of water is maximum at:

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

The general formula of alkynes is:

The functional group of Amines is

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

Active mass means ____________.

Chemical formula of Slaked lime is:

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

Identify the compound responsible for acid rain:

Which one of the followings is insoluble in water?

Lowest temperature in stratosphere is:

Which of the following layers contains ozone gas?

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

Which of the following process is reduction in nature?

Which compound is not a saturated hydrocarbon?

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

What is the percentage of Nitrogen in Ammonium sulphate \({ (NH }_{ 4 })_{ 2 }{ SO }_{ 4 }\)?

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

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

Which of the following acids is found in Butter?

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

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

Acid rain has pH less than:

What happens when ammonium carbamate is distilled with steam?

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

Which product is obtained when chloromethane is reduced?

Nitrogen dioxide is synthesized according to the given equilibrium.
\(2NO_{ (g) }+O_{ 2(g) }\rightleftharpoons 2N{ O }_{2 (g) }\)
The unit of Kc, for this reaction is:

Which of the following is a Lewis Base?

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

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

When \(H^{ + }\) < 1 × [latex]10^{ -7 }[/latex] M, then solution will be:

Stem "But" stands for how many carbon atoms?

Which of the following is a Lewis acid?

Which of the following is a homocyclic compound?

Which of the following is the functional group of amine?

Which is reddish brown gas?

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

The general formula of alkane is:

Most of air pollution is caused by:

The substance which fight against diseases in living organisms are:

Which one is not an air pollutant?

Which of the following is the chemical formula of Gypsum?

Percentage of nitrogen in urea is:

For which reaction Kc has NO units?

The formula of ammonium carbamate is:

___________ is used to make rectified spirit by fermentation process

By dehydration, we mean the removal of:

The general formula for Amines is:

What is the concentration of \({ H }^{ + }\) ion in the milk of magnesia?

What per cent of alkaline aqueous solution of \(KMnO_{ 4 }\) is used to detect the presence of an Alkene?

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

Which of the following is a water soluble vitamin?

The formula of Halite is:

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

In an irreversible reaction equilibrium is:

Green colour in firework is produced by the use of: (Example 10.4 P-35)

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

Which of the following is used to remove permanent hardness in water?

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

Which of the following is used for ripening of fruits?

Chalcopyrite is the ore of:

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

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

Which process produces an alkane?

Which of the following reacts explosively with methane?

Which of the following is used as Antacid?

For a reversible reaction
\(K_{ C }=\frac { [HI]^{ 2 } }{ [{ H }_{ 2 }][{ I }_{ 2 }] } \)
which substance is product of the reaction?

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

Which is used for dehydrohalogenation of Alkyl halides?

Kwashiorkor is a disease caused by an extreme lack of:

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

Which gas has lowest percentage in the air?

Which of the following is an Ether?

Which of the following is a heterocyclic compound?

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

__________ is used for artificial ripening of fruits.

PbS is the formula of:

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

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

Raffinose produces ______ units of simple sugars when hydrolyzed.

Which scientist proposed the law of mass action?

Which of the following is a Lewis base?

Which of the following is a heterocyclic compound?

Disorders of Red blood cells is caused due to the deficiency of:

Formic acid contains functional group:

What will happen if \([O{ H }^{ - }]\) increases?

What is the chemical formula of slaked lime?

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

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

Which of the following is used as domestic fuel?

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

\(N{ H }_{ 3 }\) cannot be classified as a base by:

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

Which one of the following vitamins is fat soluble?

At what pH does Phenolphthalein change its colour?

Which of the following is NOT a water-borne disease?

Which of the following diseases is caused due to the deficiency of vitamin-A?

Formic acid contains functional group:

__________ is used to manufacture urea fertilizer.

Which of the following is used as jet fuel?

Halite is an ore of:

Highest temperature in Mesosphere is:

The separation of mineral from gangue is called concentration. Which of the following methods is used for concentration?

Which is used for dehydro-halogenation?

Ice floats over liquid water because:

What is the unit of equilibrium constant for
\({ N }_{ 2 }+{ O }_{ 2 }\rightleftharpoons 2N{ O }_{ 2 }\)

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

Phenol gives _______ ppt with bromine water.

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

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

The temperature inside a green house can be higher than the outside temperature.

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

Which of the following is an ore of Aluminum?

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:

The unit of Kc for a reaction with equal number of moles of reactants & products is:

Which human activity results in contamination of water bodies?

Raffinose (\({ C }_{ 18 }{ H }_{ 32 }{ O }_{ 16 }\)) is a:

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

Which of the followings is not a waterborne disease?

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

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

_________ is used to make liquid soap and shaving cream.

At equilibrium state of a reversible reaction:

The atmospheric layer that has the temperature range of −5 °C to −93°C is:

Hydrogen is added to Propene according to the following equation:
\(C{ H }_{ 3 }CH={ CH }_{ 2 }+{ H }_{ 2 }\rightarrow { 200-300^{ O }C } { CH }_{ 3 }-{ CH }_{ 2 }-{ CH }_{ 3 }\)
Which of the following catalysts is used for this reaction?

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

Which of the following is not a source of starch?

A drain cleaner solution contains 1.0 × \({ 10 }^{ -8 }\)M, \({ OH }^{ - }\) concentration. This solution is:

Which of the following is a Lewis base?

Which process produces an Alkane?

In an irreversible reaction, equilibrium is:

Which is not a dextrose sugar?

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

Complete the following reaction:
\(CH\equiv CH+{ H }_{ 2 }\xrightarrow [ Ni ]{ 200-300^{ O }C } \) _____________

Which compound has two halogen atoms on adjacent carbon atoms?

Lowest temperature in stratosphere is:

Which is an alcohol?

Which of the following Salts causes temporary hardness in water?

Each DNA nucleotide consists of:

Raffinose (\({ C }_{ 18 }{ H }_{ 32 }{ O }_{ 16 }\)) is a:

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

Which of the following cannot be classified as Arrhenius acid?

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

Formic acid contains _______ functional group.

The volumetric ratio between hydrogen and oxygen in water is:

Galena is the ore of _________ metal.

What is the colour of methyl red in basic solution?

A double arrow (\(\rightleftharpoons \)) indicates.

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

Which of the following is an aldehyde?

____________ causes breathing difficulties, asthma and eye irritation.

Plants convert glucose into:

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

Which of the following is the chemical formula of Haematite?

Which substance is used as antacid and laxative?

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

Which of the following is responsible for acid rain?

Which process produces an alkane?

Pitch is produced by:

Chemical formula of ammonium carbamate is:

The word vitamin was first used by:

Which of the following causes brain damage in children?

Permanent hardness of water can be removed by:

Glucose is: