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Q.

One gram-atom of graphite and one gram-atom of diamond were separately burnt to CO2. The amount of heat liberated was 393.5 kl and 395.4 kJ respectively. It is apparent that

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a

graphite has greater affinity for oxygen

b

diamond has greater affinity for oxygen

c

graphite is more stable than diamond

d

diamond is more stable than graphite

answer is C.

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Detailed Solution

The less the heat of combustion, the more stable the compound. It is also Obviously, as per the data given above.
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