10th Standard CBSE - Science - Carbon and Its Compounds

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Question - 1

Ethane, with the molecular formula C2H6 has

  • A 6 covalent bonds
  • B 7 covalent bonds
  • C 8 covalent bonds
  • D 9 covalent bonds

Question - 2

Butanone is a four-carbon compound with the functional group 

  • A carboxylic acid
  • B aldehyde
  • C ketone
  • D alcohol

Question - 3

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that

  • A the food is not cooked completely.
  • B the fuel is not burning completely.
  • C the fuel is wet.
  • D the fuel is burning completely.

Question - 4

Carbon exists in the atmosphere in the form of

  • A carbon monoxide only
  • B carbon monoxide in traces and carbon dioxide
  • C carbon dioxide only
  • D coal

Question - 5

Which of the following statements are usually correct for carbon compounds? These
i) are good conductors of electricity
ii) are poor conductors of electricity
iii) have strong forces of attraction between their molecules
iv) do not have strong forces of attraction between their molecules

  • A (i) and (iii)
  • B (ii) and (iii)
  • C (i) and (iv)
  • D (ii) and (iv)

Question - 6

A molecule of ammonia (NH3) has

  • A only single bonds
  • B only double bonds
  • C only triple bonds
  • D two double bonds and one single bond

Question - 7

Buckminsterfullerene is an allotropic form of

  • A Phosphorous
  • B Sulphur
  • C Carbon
  • D Tin

Question - 8

\(CH_3- {CH_2 }-OH \xrightarrow [ ]{ Alkaline \ KMnO_4+Heat } CH_3- COOH\)
In the above given reaction, alkaline KMnO 4 acts as 

  • A reducing agent
  • B oxidising agent
  • C catalyst
  • D dehydrating agent

Question - 9

Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of

  • A Addition reaction
  • B Substitution reaction
  • C Displacement reaction
  • D Oxidation reaction

Question - 10

In which of the following compounds, -OH is the functional group?

  • A Butanone
  • B Butanol
  • C Butanoic acid
  • D Butanal
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