States of Matter - Result Question 49
Assertion and Reason
Read the following questions and answer as per the direction given below :
(a) Statement I is correct; Statement II is correct; Statement II is the correct explanation of Statement I
(b) Statement I is correct; Statement II is correct; Statement II is not the correct explanation of Statement I
(c) Statement I is correct; Statement II is incorrect
(d) Statement I is incorrect; Statement II is correct
49.
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.
(1998)
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Answer:
Correct Answer: 49. (a)
Solution:
$a$ is the measure of intermolecular force of attraction. Greater the intermolecular force of attraction (H-bond in the present case) higher the value of $a$.
BETA
