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NECO SSCE Chemistry 2016 past questions and answers

This 2016 NECO SSCE Chemistry set has 40 practice questions. Try these 5 free sample questions, tap a question to reveal the answer and explanation. Then practise the whole 2016 set with instant marking.

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Sample NECO SSCE Chemistry 2016 questions

1. Which gas released during the burning of sulfur-containing fuels is a major cause of acid rain?
  1. Sulfur dioxide
  2. Carbon monoxide
  3. Methane
  4. Argon

Answer: A. Sulfur dioxide

Sulfur dioxide dissolves in atmospheric moisture and is oxidized to acids that contribute to acid rain.

2. Which catalyst is commonly used in the Haber process for manufacturing ammonia?
  1. Vanadium(V) oxide
  2. Finely divided iron
  3. Nickel
  4. Manganese(IV) oxide

Answer: B. Finely divided iron

Finely divided iron catalyses the reversible reaction between nitrogen and hydrogen in the Haber process.

3. Which petroleum fraction is collected at a higher temperature than petrol but a lower temperature than diesel oil in fractional distillation?
  1. Refinery gas
  2. Bitumen
  3. Kerosene
  4. Lubricating oil

Answer: C. Kerosene

Kerosene has a higher boiling range than petrol and a lower boiling range than diesel oil.

4. Which small molecule is the monomer used to make poly(ethene) by addition polymerization?
  1. Ethane
  2. Ethanol
  3. Ethanoic acid
  4. Ethene

Answer: D. Ethene

The carbon-carbon double bond in ethene opens during addition polymerization to form poly(ethene).

5. What are the main products when ethanol reacts with ethanoic acid under suitable esterification conditions?
  1. Ethyl ethanoate and water
  2. Ethene and carbon dioxide
  3. Ethanal and hydrogen
  4. Sodium ethanoate and water

Answer: A. Ethyl ethanoate and water

Ethanol and ethanoic acid combine to form the ester ethyl ethanoate and water.

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