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43. At NTP the mass of one litre of air is 1.293 gm. The value of specific gas constant will be

(a) 0.29 J/K-gm                    (b) 4.2 J/K–gm

(c) 8.3 J/K-gm                       (d) 16.5 J/K-gm

Answer-a

(74)

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