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Q.

Statement I : The value of van der Waals constant “a”, is larger for ammonia than for nitrogen.Statement II : Hydrogen bonding is present in ammonia.

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a

Stateement I and II are correct

b

Statement I is correct and Statement  II is  incorrect

c

Statement I is incorrect and statment II is correct

d

Both statement I and II are incorrect

answer is A.

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Detailed Solution

Inter molecular Hydrogen bonding is present in NH3. Stronger the attractive forces larger is the 'a' value.Weak Vanderwall's forces are present in H2 molecule.
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