The set of pollutants that is most likely to be produced when petrol is accidentally spilled on plastic materials and ignited is

• A. CO, CO₂ and SO₂
• B. CO, HCL and SO₂
• C. CO, CO₂ and HCL
• D. SO₂, CO2 and HCL

Environmentalists agree that there is a general rise in sea level as a result of

• A. excessive rainfall
• B. excavation of sand from ocean beds
• C. global warming
• D. man-induced erosion along sea coasts

When alkanols react with sodium, the gas evolved is

• A. hydrogen
• B. oxygen
• C. methane
• D. ethyne

According to Paul, a ruler does not bear the sword in vain but he

• A. leads men into the ways of God
• B. executes God's wrath on the wrong doer
• C. rules as influenced by the people
• D. enforces civil duties

The length of a simple pendulum is increased by a factor of four. By what factor is its period increase?

• A. 0.5°
• B. 2
• C. 2°
• D. 4

Which of the following conditions will cause a decrease in body temperature?

• A. increased metabolism
• B. Shivering
• C. Vasoconstriction of capillaries of the skin
• D. Relaxation of the erector muscles

In which of the following party system are all shades of opinions and interests adequately represented?

• A. Zero-party
• B. One-party
• C. Two-party
• D. Multi-party

Water of mass 1.5kg is heated from from 30^oC to 80^oC using an electric kettle which is rated 5A, 230V. Calculate the time taken to reach the final destination [specific heat capacity of water 4200Jkg^-1K^-1]

• A. 4.57 minutes
• B. 5.02 minutes
• C. 7.30 minutes
• D. 10.04 minutes

The air pollutant unknown in nature is

• A) NO
• B) CO
• C) HCHO
• D) DDT

Some cassava tubers are poisonous to non-ruminant because they contain

• A. hydrochloric acid
• B. hydrocyanic acid
• C. sodium chloride
• D. sodium hydroxide