MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryGaseous statePrevious Year Questions

n n C H What is the value of n? (WB JEE 2010)

A.1

B.4✓ Correct

C.3

D.8

Explanation

2 2 2 2 2 2 n n n n C H H C H H M r r M 2 2 2 2 3 3; 27 2 2 n n n n C H C H M M 2 2 27 2 54 / n n C H M g mol >> x Hence, 12n + (2n - 2) × 1 = 54 >> 14 n = 56 or n = 4 Thus, hydrocarbon is C4H6.

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