1.

H_(2)O is a liquid while H_(2)S is a gas. This is due to :

Answer»

DIFFERENCE in the STATE of hybridisations of O and S in their compounds
high molecular mass of `H_(2)S` as compared to `H_(2)O`.
strong HYDROGEN bonding in `H_(2)O` molecules as compared to `H_(2)S` molecule
`H-O-H` bond angle in `H_(2)O` is `104.5^(@)` while `H-S-H` bond angle in `H_(2)S` is `92^(@)`

Answer :C


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