NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 427 - 433 of 1258

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Question number: 427

» Atomic Structure » De-Broglie's Relationship

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MCQ▾

Question

An electron beam can undergo diffraction by crystals. Through what potential should a beam of electrons be accelerated so that its wavelength becomes equal to

Choices

Choice (4) Response

a.

33.3 volt

b.

63.3 volt

c.

43.3 volt

d.

53.3 volt

Question number: 428

» States of Matter » Gaseous State » Ideal Gas Equation

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MCQ▾

Question

Which one of the following is not the correct value of R?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 429

» Hydrogen » Structure, Preparation, Reactions and Uses of Hydrogen Peroxide

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MCQ▾

Question

Decolonization of acidified potassium permanganate occurs when hydrogen peroxide is added to it. This is due to?

Choices

Choice (4) Response

a.

oxidation and reduction of

b.

oxidation of

c.

reduction of

d.

None of the above

Question number: 430

» Atomic Structure » Hund's Rule

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MCQ▾

Question

The total spin resulting from a d5 configuration is –

Choices

Choice (4) Response

a.

b.

c.

1

d.

2

Question number: 431

» States of Matter » Gaseous State » Kinetic Theory of Gases

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MCQ▾

Question

If the temperature of 1 mole of a gas is increased by 50 ℃, calculate the change in kinetic energy of the system?

Choices

Choice (4) Response

a.

767.3 J

b.

623.5 J

c.

6230 J

d.

62.33 J

Question number: 432

» Hydrogen » Preparation, Properties and Uses of Hydrogen

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MCQ▾

Question

In which of the following reactions does hydrogen acts as an oxidizing agent?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 433

» Hydrogen » Physical and Chemical Properties of Water

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MCQ▾

Question

Heavy water is used in atomic reactor as?

Choices

Choice (4) Response

a.

Coolant

b.

Neither coolant nor moderator

c.

Moderator and coolant

d.

Moderator