NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 691 - 695 of 1258

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Question number: 691

» Atomic Structure » Rules for Filling Electrons in Orbitals

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MCQ▾

Question

Any p-orbital can accommodate upto?

Choices

Choice (4) Response

a.

4 electrons

b.

2 electrons with parallel spins

c.

2 electrons with opposite spins

d.

6 electrons

Question number: 692

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

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Tert- butyl alcohol undergoes acid catalysed dehydration readily than propanol.

Reason (Ꭱ)

3° alcohols do not give Victor-Meyer’s test.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

Ꭺ is false but Ꭱ is true

Question number: 693

» Basic Concepts in Chemistry » Atomic and Molecular Masses

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MCQ▾

Question

A metal oxide has the formula it can reduced by to give free metal and water. required for complete reduction. The atomic mass of metal is?

Choices

Choice (4) Response

a.

27.9

b.

159.8

c.

55.8

d.

79.8

Question number: 694

» Basic Concepts in Chemistry » Atomic and Molecular Masses

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MCQ▾

Question

The percentage of Se in peroxide enzyme is by mass. Then, the minimum molecular mass of enzyme, which contains not more than on Se atom is?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 695

» Basic Concepts in Chemistry » Physical Quantities and Measurements

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MCQ▾

Question

Calculate the number of milliliters at STP of gas needed to precipitate cupric sulphide completely from 100 mL of a solution containing in 1L?

Choices

Choice (4) Response

a.

b.

21.4

c.

41.2

d.

14.2