NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 684 - 690 of 1258

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Question number: 684

» Atomic Structure » Electronic Configuration of Elements

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Appeared in Year: 2016

MCQ▾

Question

Jahn-Teller effect is not observed in high spin complexes of

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 685

» Basic Concepts in Chemistry » SI Units

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MCQ▾

Question

, is the SI unit of?

Choices

Choice (4) Response

a.

Volume

b.

Density

c.

Force

d.

Pressure

Question number: 686

» Basic Concepts in Chemistry » Concept of Atom, Molecule, Element and Compound

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MCQ▾

Question

The most abundant element in earth’s crust is?

Choices

Choice (4) Response

a.

Nitrogen

b.

Oxygen

c.

Silicon

d.

Hydrogen

Question number: 687

» Basic Concepts in Chemistry » Molar Mass

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MCQ▾

Question

The number of hydrogen atoms present in of sucrose which has a molar mass of is?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 688

» Hydrocarbons » Preparation, Properties and Reactions

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Cyclobutan is less stable than cyclopentane

Reason (Ꭱ)

Presence of bent bonds causes “loss of orbital overlap”.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

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

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Ꭺ is true but Ꭱ is false

Question number: 689

» Organic Compounds with Oxygen » Preparation, Properties and Reactions and Uses

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MCQ▾

Question

Which reagent is useful in converting 1-butanol to 1-bromobutane?

Choices

Choice (4) Response

a.

CH3Br

b.

CHBr3

c.

Br2

d.

PBr3

Question number: 690

» Basic Concepts in Chemistry » Molar Mass

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MCQ▾

Question

How many atoms do a mercury vapour molecule consist of, if the vapour density of mercury vapour relative to air is . The molarmass of air is ?

Choices

Choice (4) Response

a.

b.

c.

d.