JAMB CHEMISTRY PRACTISE QUESTIONS - V

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

• hydrogen chloride
• air
• oxygen
• water

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

• hydrochloric acid
• mercury
• calcium chloride
• tetraoxosulphate (VI) acid

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

• boiling point
• density
• oxidizing properties
• dehydrating properties

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

• is stronger
• can withstand low temperature
• has low tensile strength
• is lighter

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

• NaHCO₃
• NaOH
• Na₂CO₃
• NaCl

Which of the following compound is used as a gaseous fuel?

• CH₃ –C=CH
• CH₃(OH) –CH₂ –CH₃
• CH₃ –CH₂ –CH₂ –COOH
• CH₃ –CH₂–CH₂ –CH₃

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

• alkylation
• catenation
• acylation
• carbonation

Which of the following compounds will undergo polymerization reaction?

• C₂H₄
• C₂H₅COOH
• C₂H₅OH
• C₂H₆

The compound below exhibits

• geometric isomerism
• structural isomerism
• optical isomerism
• positional isomerism

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

• C₃H₇OH
• C₂H₅OH
• C₃H₆O₃
• C ₂H₄O₂