SSC JE Mechanical Engineering 2012 Paper

Question : 102 of 200

Marks: +1, -0

The ratio of air required for complete combustion of carbon to carbon dioxide and that to carbon monoxide is

Solution:

Air required to C to CO

_2

C↙{12}+O_2↙{32}→CO_2↙{44}

⇒

32/12\kg,8/3\kg

air required for 1 kg C

C +O→ CO

⇒

16/12\kg,4/3\kg

air required for 1 kg C
Ratio of

O_2 ={8/3\kg}/{4/3\kg}=2.0

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