GATE2014-54

Determine the correctness or otherwise of the following Assertion $[a]$ and Reason $[r]$

Assertion: Significant combustion of coke takes place only if it is heated at higher temperature in presence of air.

Reason: $C+O_{2}{\rightarrow} CO_{2}$ is an exothermic reaction.

1. Both $[a]$ and $[r]$ are true and $[r]$ is the correct reason for $[a]$
2. Both $[a]$ and $[r]$ are true but $[r]$ is not the correct reason for $[a]$
3. $[a]$ is correct but $[r]$ is false
4. Both $[a]$ and $[r]$ are false
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