What is the common name for ethanoic acid?

• A. Acetic acid
• B. Butyric acid
• C. Propionic acid
• D. Formic acid

The chemical used for coagulation in water purification is

• A. Aluminium tetraoxosulphate (VI)
• B. Copper tetraoxosulphate (VI)
• C. Sodium tetraoxosulphate (VI)
• D. Calcium tetraoxosulphate (VI)

2-methylprop-1-ene is an isomer of

• A. but-2-ene
• B. pent-1-ene
• C. 2-methylbut-2-ene
• D. 2-methylbut-1-ene

(a) State two differences in the chemical properties of metals and non-metals.

(b) List two general methods of extract metals from their ores.

Fructose and glucose are classified as carbohydrates because they

• A. are crystalline white solids
• B. are energy -giving substances
• C. are naturally occurring organic compounds
• D. conform to the general formula C_x(H₂O)_y

The major air pollutants that can result from smoky vehicles include

• A) Acid fumes
• B) Hydrogen sulphide
• C) Carbon (II) oxide
• D) Carbon particles

Which of SF₄, SiH₄, CO₂, ICI, CH₂Cl₂, SO₂ and XeO₃ will not show the property of permanent dipole?

• A) CO₂ and SiH₄ only
• B) SF₄ and SIH₄ only
• C) CO₂, SiH₄ and XeO₃ only
• D) SF₄, SiH₄, CO₂ and ICI

The volume of 2.5 moles of oxygen at s.t.p is [Molar volume of a gas at s.t.p = 22.4 dm³]

• A. 50.0 dm³
• B. 84.0 dm³
• C. 28.0 dm³
• D. 56.0 dm³

Which of the following are mixtures? I. Petroleum II. Rubber latex III. Vulcanizer's solution IV. Carbon sulphide

• A) I, II and III
• B) I, II and IV
• C) I and II only
• D) I and IV

When ethanal vapour is passed over manganese (II) ethanoate (manganese acetate) catalyst in the presence of air, the product is:

• A) ethanoate
• B) ethanol
• C) methanol
• D) ethanoic acid