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Covalent Bond

Assertion A: ...

Question

Assertion (A): Silicones are water repelling in nature.

Reason (R): Silicon are organosilicon polymers, which have $(- R_{2} S i O -)$ as repeating unit.

Both

A

and

R

are correct and

R

is the correct explanation of

A

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Both

A

and

R

are correct and

R

is not the correct explanation of

A

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A

is not correct but

R

is correct.

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Both

A

and

R

are not correct

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Solution

The correct option is B Both $A$ and $R$ are correct and $R$ is not the correct explanation of $A$ .
$Analysing the assertion :$

Silicones are water repelling in nature. Yes, it is a true statement. Hence, the given assertion is correct.

$Analysing the reason :$

Silicones are organosilicon polymers, which have $(- R_{2} S i O -)$ as a repeating unit.

Yes, it is correct statement but it does not explain the given assertion because Silicones consist of

chains, in which alkyl or phenyl groups occupy the remaining bonding positions on each silicon, which makes it hydrophobic (water repellent) in nature.

So, assertion and reason are correct, but reason is not the correct explanation of assertion.

Hence, correct answer is Option $(B)$ .

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