AIIMS (All India Institute of Medical Sciences) Chemistry: Questions 46 - 50 of 123

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Question number: 46

» Polymers » Nylon

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MCQ▾

Question

The monomer used in the manufacture of nylon -6,6 are?

Choices

Choice (4)Response

a.

Adipic acid and butadiene

b.

Adipic acid and hexamethylene diamine

c.

Sebacic acid and butadiene

d.

Sebacic acid and hexamethylene diamine

Question number: 47

» Polymers » Natural and Synthetic Rubber

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MCQ▾

Question

Which of the following rubbers is not a polydiene?

Choices

Choice (4)Response

a.

Thiokol

b.

Poly isoprene

c.

Poly chloroprene

d.

Neoprene

Question number: 48

» Polymers » Vulcanization

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MCQ▾

Question

Heating of rubber with Sulphur known as?

Choices

Choice (4)Response

a.

Sulphonation

b.

Galvanisation

c.

Vulcanization

d.

Bessermerisation

Question number: 49

» Atomic Structure » Thomson and Rutherford Atomic Models

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Assertion-Reason▾

Question

Assertion (Ꭺ)

The atoms of different elegists having same mass number but different atomic number are known as isobars.

Reason (Ꭱ)

The sum of protons and neutrons, in the isobars is always different.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Ꭺ is false but Ꭱ is true

Question number: 50

» States of Matter » Solid State » Packing in Solids (Fcc, Bcc and Hcp Lattices)

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MCQ▾

Question

If ‘Z’ is the number of atoms in the unit cell that represent the closest packing sequence the number of tetrahedral voids in the unit cell is equal to

Choices

Choice (4)Response

a.

b.

c.

d.

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