Waec Chemistry Past Questions For Year 2004
Question 36
What is the product Cx Hy in the following equation? C10H12 → C8H18 + CxHy
- A. butene
- B. octane
- C. ethene
- D. decane
Question 37
WHICH OF THE FOLLOWING PETROLEUM FRACTIONS YIELDS VASELINE AND PARAFFIN WAX ON REDISTILLATION?
- A. DIESEL OIL
- B. LUBRICATION OIL
- C. PETROL
- D. KEROSENE
Question 38
Which of the following reactions will be affected by change in pressure at equilibrium?
- A. X(g) + Y(g) ⇌ W(g) + Z(g)
- B. X(g) + 2Y(g) ⇌W(g) + Z(g)
- C. 2X(g) ⇌ W(g) + Z(g)
- D. 2Y(g) ⇌ W(g) + Z(g)
Question 39
The key factor to be considered in siting a chemical industry is
- A. favourable climatic conditions
- B. the availability of space to store raw materials
- C. its nearness to other industrial establishments
- D. its nearness to the source of raw materials
Question 40
Which of the following measures is not suitable for controlling water pollution?
- A. treating industrial effluent and domestic sewage before discharge into water
- B. Controlling the use of agrochemicals
- C. recycling industrial and agricultural wastes
- D. burning industrial and agricultural wastes before discharge into water ways
