Question

Assertion :Nitrogen has a boiling point of - 196${}^{\circ }$C. Reason: Nitrogen is sparingly soluble in water.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Assertion is incorrect but Reason is correct

Answer 1

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Physical properties of nitrogen are:
It is a relatively inert gas.
It is colorless, odorless and tasteless.
Liquid nitrogen is also colorless and odorless, and is similar in appearance to water.
There are two allotropic forms of solid nitrogen, a and b, with a transition between the two forms at $-{237}^{o}C$.
Density : $1.25\times {10}^{-3}gmc{m}^{-3}at{20}^{o}C$
Melting point : $-{210}^{o}C$
Boiling point : $-{195.8}^{o}C$
Both are true but given reason is not the right reason for the assertion.
Hence, option B is the correct answer.