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

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
$\begin{matrix} Nitrogen (N_{2}) has very less boiling point and melting point. That's why N_{2} is gas at room temperature. It has boiling point about - 196^{\circ} c . Also, N_{2} is very less soluble in water i.e at STP, only 23.2 m L of N_{2} is soluble in 1 L of water. \end{matrix}$

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Assertion :Nitrogen has a boiling point of −196oC. Reason: Nitrogen is sparingly soluble in water.

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