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Crystalline and Amorphous Solid

Assertion :Gl...

Question

Assertion :Glass panes fixed to windows or doors of old buildings are slightly thicker at the bottom that at the top. Reason: Glass is pseudo solid or supercooled liquid.

A

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

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B

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

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C

Assertion is correct but Reason is incorrect

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D

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
Glass panes fixed to windows or doors of old buildings are found to become thicker at the bottom because the glass is supercooled liquid and it flows down very slowly and makes the bottom portion thicker.
Hence, both assertion and reason are correct.
So, correct answer is option is option A.

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