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Chemistry Quiz

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

The number of moles of oxygen atoms in 1 mole of Ca(NO₃)₂ is

a)

2

b)

3

c)

6

d)

8

2.

For the reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g), an increase in pressure will

a)

favor the reverse reaction

b)

favor the forward reaction

c)

have no effect

d)

stop the reaction

3.

During electrolysis of CuSO₄ solution using copper electrodes, the reaction at the anode is

a)

Cu²⁺ + 2e⁻ → Cu

b)

4OH⁻ → 2H₂O + O₂ + 4e⁻

c)

Cu → Cu²⁺ + 2e⁻

d)

2H⁺ + 2e⁻ → H₂

4.

The process by which an element spontaneously disintegrates due to instability of its nucleus is called

a)

radioactivity

b)

fission

c)

fusion

d)

transmutation

5.

The IUPAC name for CH₃-CH(CH₃)-CH₂-CH₃ is

a)

2-methylbutane

b)

3-methylbutane

c)

pentane

d)

isopentane

6.

A compound that gives a sweet, fruity smell when heated with ethanol and concentrated H₂SO₄ is likely to be

a)

an alkane

b)

an aldehyde

c)

an ester

d)

a ketone

7.

The monomer of natural rubber is

a)

isoprene

b)

ethylene

c)

styrene

d)

vinyl chloride

8.

The depletion of the ozone layer is mainly caused by

a)

carbon dioxide

b)

chlorofluorocarbons (CFCs)

c)

sulphur dioxide

d)

nitrogen dioxide

9.

The enthalpy change for the reaction C(s) + O₂(g) → CO₂(g) is the enthalpy of

a)

formation of CO₂

b)

combustion of carbon

c)

neutralization

d)

solution

10.

A catalyst remains unchanged at the end of a reaction in terms of its

a)

mass and chemical composition

b)

physical state only

c)

mass only

d)

chemical composition only

11.

The IUPAC name for CH₃CH₂CH₂CH₂CH₂OH is

a)

pentan-1-ol

b)

butan-1-ol

c)

propan-1-ol

d)

hexan-1-ol

12.

In qualitative analysis, the group I cation is precipitated as

a)

chlorides

b)

sulphides

c)

hydroxides

d)

carbonates

13.

The process of converting starch to ethanol involves

a)

Esterification

b)

Fermentation

c)

Cracking

d)

Polymerization

14.

Nylon is an example of a

a)

Thermosetting polymer

b)

Natural polymer

c)

Condensation polymer

d)

Protein

15.

The primary cause of acid rain is the presence in the atmosphere of high levels of

a)

Carbon monoxide and carbon dioxide

b)

Sulphur (IV) oxide and nitrogen (IV) oxide

c)

Oxygen and nitrogen

d)

Hydrogen sulphide and chlorine