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Q.

Equal moles of CO, B2H6,  H2  and  CH4 are placed in a container. If a hole was made in container after 5 minute, partial pressure of gases in container would be

(Atomic weights of C, O, B and H are 12, 16, 11, 1 respectively)

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a

PCO>PB2H6  >PH2>PCH4

b

PCO=PB2H6  >PCH4>PH2

c

PCO>PB2H6  =PH2>PCH4

d

PB2H6>  PH2>PCH4>PCO

answer is B.

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Detailed Solution

CO  andB2H6 have same molecular mass. The diffusion of lighter gas will be more. Thus moles coming out from container will show.

H2>  CH4  >CO  =B2H6.

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