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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83

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

1 / 12

Chemical formula of ammonium carbamate is:

[katex]{ NH }_{ 2 }COON{ H }_{ 4 }[/katex]

[katex]{ (NH }_{ 4 })_{ 2 }SO_{ 4 }[/katex]

[katex]{ NH }_{ 4 }N{ O }_{ 3 }[/katex]

[katex]{ NH }_{ 2 }CON{ H }_{ 2 }[/katex]

2 / 12

Which of the following is an aldehyde?

[katex]{ CH }_{ 3 }{ CH }_{ 2 }CHO[/katex]

[katex]{ C }_{ 6 }{ H }_{ 5 }OH[/katex]

[katex]{ CH }_{ 3 }{ COCH }_{ 3 }[/katex]

[katex]{ CH }_{ 3 }COOH[/katex]

3 / 12

Raffinose produces ______ units of simple sugars when hydrolyzed.

5

2

4

3

4 / 12

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

Solution becomes unpredictable

Solution becomes Neutral

Solution becomes acidic

Solution becomes Basic

5 / 12

Permanent hardness of water can be removed by:

Cooling

Ion exchange method

Boiling

Clark’s method

6 / 12

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

[katex] \frac { 1 }{ 2 } { O }_{ 2 }[/katex]

[katex]{ O }_{ 4 }[/katex]

[katex]{ O }_{ 2 }[/katex]

[katex]{ O }_{ 3 }[/katex]

7 / 12

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

Ketone

Alcohol

Aldehyde and Ketone

Phenol

8 / 12

Which of the following is a Lewis acid?

[katex]{ F }^{ - }[/katex]

[katex]B{ F }_{ 3 }[/katex]

[katex]N{ H }_{ 3 }[/katex]

[katex]O{ H }^{ - }[/katex]

9 / 12

Each DNA nucleotide consists of:

2 components

5 components

4 components

3 components

10 / 12

The substance which fight against diseases in living organisms are:

Lipids

Proteins

Carbohydrates

Enzymes

11 / 12

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

\({ mol }^{ 2 }.{ dm }^{ -6 }\)

\( { mol } { dm }^{ -3 }\)

\({ dm }^{ 3 }.{ mol }^{ -1 }\)

No units

12 / 12

Which of the following process is reduction in nature?

Floatation

Roasting

Smelting

Grinding

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Past Paper 2019 (Overseas)
Practice MCQs Test

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66

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

1 / 12

For which reaction Kc has NO units?

[katex]2N{ O }_{ 2 }\rightleftharpoons { N }_{ 2 }{ O }_{ 4 }[/katex]

[katex]2ICl\rightleftharpoons I_{ 2 }+{ Cl }_{ 2 }[/katex]

[katex]PC{ l }_{ 5 }\rightleftharpoons PCl_{ 3 }+{ Cl }_{ 2 }[/katex]

[katex]{ N }_{ 2 }+3{ H }_{ 2 }\rightleftharpoons 2N{ H }_{ 3 }[/katex]

2 / 12

Formic acid contains _______ functional group.

−CO−

−CHO

−OH

−COOH

3 / 12

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

Alkene

Aldehyde

Alkane

Ketone

4 / 12

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

Neutral

Acidic

Basic

Unpredictable

5 / 12

Which compound has two halogen atoms on adjacent carbon atoms?

Ester

Alkyle halide

Ether

Vicinal dihalide

6 / 12

Percentage of nitrogen in urea is:

21.2

35

46.6

80

7 / 12

The volumetric ratio between hydrogen and oxygen in water is:

3:01

2:01

1:08

2:02

8 / 12

Halite is an ore of:

Copper

Sodium

Zinc

Iron

9 / 12

Identify the compound responsible for acid rain:

Glyoxal

Sulphur dioxide

Chlorofluorocarbons

Vicinal dihalide

10 / 12

The linkage which joins two amino acids is called:

Peptide Bond

Ionic Bond

Metallic Bond

Covalent Bond

11 / 12

The word vitamin was first used by:

Francis Crick

C. Eijkman

F.G. Hopkins

Casmir Funk

12 / 12

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

\({ BF }_{ 3 }\)

H

N

B

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