Air Pollution Jamb Chemistry Past Questions
Question 1
A substance that is used as a ripening agent for fruits is
- A. ethene
- B. propane
- C. methane
- D. butane
Question 2
When a solid substance disappears completely as a gas on heating, the substance is said to have undergone?
- A. Sublimation
- B. Crystallization
- C. Distillation
- D. Evaporation
Question 3
A colored gas that is known to be poisonous and can readily damage the mucous lining of the lungs is?
- A. hydrogen sulphide
- B. carbon(ii)oxide
- C. chlorine
- D. sulphur(iv)oxide
Question 4
A gas that turns a filter paper previously soaked in lead ethanoate solution black is?
- A. hyrogen chloride
- B. hydrogen sulphide
- C. sulphur (IV) oxide
- D. sulphur (VI) oxide
Question 5
When glowing splint is inserted into the mouth of a jar containing a gas, the splint is extinguished. The gas gives a white precipitate when passing into barium hydroxide. The gas is?
- A. methane
- B. hydrogen chloride
- C. hydrogen
- D. nitrogen
- E. carbondioxide
