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Q.

Assertion (A) : The force of attraction between the molecules of a covalent compound is very weak.

Reason (R) : Covalent compounds have usually low melting points and low boiling points.

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a

A is incorrect and R is correct

b

Both A and R are true and R is the correct explanation of A

c

A is correct and R is incorrect

d

Both A and R are true and R is not correct explanation of A

answer is B.

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Detailed Solution

Between covalent bond very weak inter molecular force present due to the presence of weak intermolecular force very hole that is required to break the bond. Therefore the melting and boiling point of covalent compounds have low. 

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