Confused!?
If one mole is given, it means it's volume is 22.4 litres. To find mass we should multiply density and volume?!? But not given in any options!
Q.38. The weight of 1 mole of a gas of density 0.1784 g L - 1 at NTP is -
(1) 0.1784 g
(2) 1 g
(3) 4 g
(4) Can not be Calculate

Hope u got.

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Oh yeh! I made a calci error. :(:(
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