1.the molality of dilute aqua solution of 0.05 M NaOH is
options:-
a)0.05 m
b)18.5 m
c)55.55 m
d)0.1 m
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2. The number of molecules present in One drop(0.05ml) of benzene(density = 0.78 g/ml)is nearly equal to
options:-
a)6 × 10²³
b)3 × 10²¹
c)3 ×.10²⁰
d)6 × 10¹⁹
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