Correct statements among \(i\) to \(iv\) regarding silicones are \((i)\) they are polymers with hydrophobic character \((ii)\) they are biocompatible \((iii)\) in general, they have high thermal stability and low dielectric strength \((iv)\) usually they are resistant to oxidation and used as greases.

A \((i), (ii), (iii)\) and \((iv)\)
B \((i), (ii)\) and \((iii)\)
C \((i)\) and \((ii)\) only
D \((i), (ii)\) and \((iv)\)

Verified Solution

Answer & Solution

Correct Answer

(D) \((i), (ii)\) and \((iv)\)

Step-by-step Solution

Detailed explanation

Silicones are polymers and hydrophobic due to presence of alkyl groups. They are used as greases as some of them are cyclic

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

\(Mn_2(CO)_{10}\) is an organometalic compound due to the presence of

JEE Mains 2019 Medium

Match List \(I\) with List \(II\).

List \(I\)	List \(II\)
\(A.\) Invertase	\(I.\) Starch into maltose
\(B.\) Zymase	\(II.\) Maltose into glucose
\(C.\) Diastase	\(III.\) Glucose into ethanol
\(D.\) Maltase	\(IV.\) Cane sugar into glucose

Choose the most appropriate answer from the options given below

JEE Mains 2022 Easy

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