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NEET CHEMISTRYP Block ElementsEasy

Question

The compound among the following that is used in cosmetic surgery is:

A

Silica

B

Silicates

C

Silicones

D

Zeolites

Step-by-Step Solution

Silicones are a group of organosilicon polymers, which have (R2SiO)(R_2SiO) as a repeating unit. They are characterised by high thermal stability, high dielectric strength, and resistance to oxidation and chemicals. Crucially, they are biocompatible (non-toxic and do not trigger an immune response) and water-repellent. Due to these properties, silicones find extensive use in surgical implants for cosmetic surgery, as well as in sealants, greases, and electrical insulators.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from P Block Elements. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYP Block Elementscompoundfollowingcosmeticsurgery

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The number of carbon atoms per unit cell of diamond unit cell is:

A.4
B.8
C.6
D.1
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The correct statement among the following is :

A.Sn2+ is an oxidizing agent while Pb4+ is a reducing agent.
B.Sn2+ and Pb2+ both are oxidizing agents.
C.Sn4+ is a reducing agent while Pb4+ is an oxidizing agent.
D.Sn2+ is a reducing agent while Pb4+ is an oxidizing agent.
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A.NH3
B.BF3
C.OH-
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Choose the correct statement:

A.Both diamond and graphite are used as dry lubricants.
B.Diamond and graphite have a two-dimensional network.
C.Diamond is covalent and graphite is ionic.
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A compound among the following having a similar structure to graphite is:

A.B
B.B4C
C.B2H6
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Select the element (M) whose trihalides cannot be hydrolysed to form $[M(H_2O)_6]^{3+}$.

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D.B
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The incorrect statement among the following is:

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Identify the incorrect statement:

A.Carbon has the tendency to form chains and rings with itself.
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