Assertion :On the surface of the moon, the temperature ranges from -190 $^{0}$ C to 110 $^{0}$ C. Reason: Air is a bad conductor of heat.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The moon is about the same distance from the Sun than the Earth is. Despite that, on the surface of the moon, with no atmosphere, the temperature ranges from –190° C to 110° C.
Air is a bad conductor of heat and hence, the atmosphere prevents the sudden increase in temperature during the daylight hours. And during the night, it slows down the escape of heat into outer space. This impossible on the moon due to the absence of atmosphere and thus the temperature of the moon changes drastically from day to night.
So, the correct option is A.

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Assertion :On the surface of the moon, the temperature ranges from -1900 C to 1100 C. Reason: Air is a bad conductor of heat.

Assertion :On the surface of the moon, the temperature ranges from -190 $^{0}$ C to 110 $^{0}$ C. Reason: Air is a bad conductor of heat.