Chemistry 10 Past Papers 2019 MCQs Tests

Federal Board, FBISE Chemistry 10 MCQs Tests of 2019 Past Papers are available on this page. There are two Chemistry papers conducted in 2019, the one is taken within Pakistan and the second paper is an overseas paper. MCQs Tests for both papers are given below. Chapter-wise MCQs Tests of Chemistry 10 are available HERE.

Past Paper 2019 (Local)
Practice MCQs Test

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4

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

1 / 12

Which of the following is a Lewis acid?

B{ F }_{ 3 }

N{ H }_{ 3 }

O{ H }^{ - }

{ F }^{ - }

2 / 12

Raffinose produces ______ units of simple sugars when hydrolyzed.

4

5

3

2

3 / 12

Permanent hardness of water can be removed by:

Boiling

Ion exchange method

Clark’s method

Cooling

4 / 12

Which of the following is an aldehyde?

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

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

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

{ CH }_{ 3 }COOH

5 / 12

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

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

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

No units

{ mol } { dm }^{ -3 }

6 / 12

Chemical formula of ammonium carbamate is:

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

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

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

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

7 / 12

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

{ O }_{ 3 }

{ O }_{ 4 }

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

{ O }_{ 2 }

8 / 12

The substance which fight against diseases in living organisms are:

Lipids

Enzymes

Carbohydrates

Proteins

9 / 12

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

Solution becomes Neutral

Solution becomes unpredictable

Solution becomes acidic

Solution becomes Basic

10 / 12

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

Ketone

Phenol

Alcohol

Aldehyde and Ketone

11 / 12

Each DNA nucleotide consists of:

3 components

5 components

2 components

4 components

12 / 12

Which of the following process is reduction in nature?

Roasting

Grinding

Floatation

Smelting

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Past Paper 2019 (Overseas)
Practice MCQs Test

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2

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

1 / 12

For which reaction Kc has NO units?

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

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

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

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

2 / 12

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

Alkene

Alkane

Aldehyde

Ketone

3 / 12

Which compound has two halogen atoms on adjacent carbon atoms?

Vicinal dihalide

Ester

Alkyle halide

Ether

4 / 12

Formic acid contains _______ functional group.

−CO−

−OH

−COOH

−CHO

5 / 12

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

Basic

Unpredictable

Acidic

Neutral

6 / 12

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

B

N

{ BF }_{ 3 }

H

7 / 12

The volumetric ratio between hydrogen and oxygen in water is:

1:08

2:01

2:02

3:01

8 / 12

The word vitamin was first used by:

Casmir Funk

Francis Crick

F.G. Hopkins

C. Eijkman

9 / 12

Identify the compound responsible for acid rain:

Chlorofluorocarbons

Sulphur dioxide

Glyoxal

Vicinal dihalide

10 / 12

The linkage which joins two amino acids is called:

Metallic Bond

Covalent Bond

Peptide Bond

Ionic Bond

11 / 12

Halite is an ore of:

Copper

Iron

Zinc

Sodium

12 / 12

Percentage of nitrogen in urea is:

46.6

21.2

80

35

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