Combustion of alkanes in the presence of an excess of oxygen gives along with water.

carbon monoxide

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caron dioxide

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coke

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Solution

The correct option is B caron dioxide
Alkanes readily burn in excess of oxygen to give ${CO}_{2} and H_{2} O$ with the evolution of large amount of heat. For example : ${CH}_{4} + 2 O_{2} \to {CO}_{2} + 2 H_{2} O C_{3} H_{8} + 5 O_{2} \to 3 {CO}_{2} + 4 H_{2} O$

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Alkanes react with an excess of air or oxygen to give :

Alkanes readily burn in excess of air or Oxygen to give

3.2

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