JEE Main 2019Chemistryp Block Elements (Group 13 & 14)EasyMCQ

JEE Main 2019 — p Block Elements (Group 13 & 14) Question with Solution

JEE Main 2019 (09 Jan Shift 1)

Question

Correct statements among regarding silicones are:

(a) They are polymers with hydrophobic character.

(b) They are biocompatible.

(c) In general, they have high thermal stability and low dielectric strength.

(d) Usually, they are resistant to oxidation and used as greases.

Choose an option

Show full solutionCorrect option: C
Correct answer
C(a), (b), (c) and (d)

Step-by-step explanation

Silicones with medium length chains behave as viscous oils, jellies and greases. They are chemically inert, i.e., resistant to oxidation. Since silicones are surrounded by non-polar alkyl groups, hence, are hydrophobic in nature. Being biocompatible, they are used in surgical and cosmetic implants. Hence, all options are correct.

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About this question

This is a previous-year question from JEE Main 2019, covering the p Block Elements (Group 13 & 14) chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.