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44. The volume of a gas at 21°C temperature and 768 mm pressure is 1 litre. If the density of the gas is 1.2 gm/litre at NTP, then its mass will be

(a)  4 gm                               (b) 4.21 gm

(c) 1.13 gm                           (d) 10 gm

Answer-c

(74)

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