The bleaching action of chlorine gas is effective due to the presence of

A. hydrogen chloride

B. water

C. air

D. oxygen

In the laboratory preparation of oxygen, dried oxygen is usually collected over

A. hydrochloric acid

B. mercury

C. calcium chloride

D. tetraoxosulphate (VI) acid

The property of concentrated H₂SO₄ that makes it suitable for preparing HNO₃ is its

A. boiling point

B. density

C. oxidizing properties

D. dehydrating properties

Bronze is preferred to copper in the making of medals because it

A. is stronger

B. can withstand low temperature

C. is lighter

D. has low tensile strength

The constituents of baking powder that makes the dough to rise is

A. NaHCO₃

B. NaOH

C. Na₂CO₃

D. NaCl

The ability of carbon to form long chains is referred to as

A. alkylation

B. acylation

C. catenation

D. carbonation

Which of the following compounds will undergo polymerization reaction?

A. C₂H₄

B. C₂H₅COOH

C. C₂H₆

D. C₂H₅OH

An organic compound has an empirical formula CH₂O and vapour density of 45.
What is the molecular formula?
[C = 12, H = 1, O = 16]

A. C₃H₇OH

B. C₂H₅OH

C. C₃H₆O₃

D. C₂H₄O₂

At 25^o and zymase as catalyst,
C₆H₁₂₆ → 2C₂H₅OH + 2CO₂ + energy
The reaction above represented by the equation above is useful in the production of

A. propanol

B. butanol

C. methanol

D. ethanol

The number of isomers that can be obtained from C₄H₁₀ is

A. 3

B. 4

C. 1

D. 2