Carbon Compounds

1

How is carbon black obtained?

  1. By heating wood at high temperature in a absence of air
  2. By heating coal at high temperature in absence of air
  3. By burning hydrocarbons in a limited supply of air
  4. By heating coal at high temperature in presence of air
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2

Mineral acids are stronger acids than carboxylic acids because

  1. mineral acids are completely ionised
  2. carboxylic acids are completely ionised
  3. mineral acids are partially ionised
  4. carboxylic acids are partially ionised

Select the correct option:

  1. (i) and (iv)
  2. (ii) and (iii)
  3. (i) and (ii)
  4. (iii) and (iv)
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3

Vinegar is a solution of

  1. 50% – 60% acetic acid in alcohol
  2. 5% – 8% acetic acid in alcohol
  3. 5% – 8% acetic acid in water
  4. 50% – 60% acetic acid in water
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4

Chlorine reacts with saturated hydrocarbons at room temperature in the

  1. absence of sunlight
  2. presence of sunlight
  3. presence of water
  4. presence of hydrochloric acid
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5

In the following reaction, alkaline KMnO4 acts as:

 

  1. Reducing agent
  2. Oxidising agent
  3. Catalyst
  4. Dehydrating agent
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6

Which of the following are correct structural isomers of butane?

 

  1. (i) and (iii)
  2. (ii) and (iv)
  3. (i) and (ii)
  4. (iii) and (iv)
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7

Buckminsterfullerene is an allotropic form of

  1. phosphorus
  2. sulphur
  3. carbon
  4. tin
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