NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 427 - 433 of 1195

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Question number: 427

» Atomic Structure » De-Broglie's Relationship

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.

63.3 volt

b.

43.3 volt

c.

53.3 volt

d.

33.3 volt

Question number: 428

» States of Matter » Gaseous State » Ideal Gas Equation

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

MCQ▾

Question

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

Choices

Choice (4) Response

a.

reduction of

b.

oxidation of

c.

oxidation and reduction of

d.

All of the above

Question number: 430

» Atomic Structure » Hund's Rule

MCQ▾

Question

The total spin resulting from a d5 configuration is –

Choices

Choice (4) Response

a.

1

b.

c.

2

d.

Question number: 431

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

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.

62.33 J

d.

6230 J

Question number: 432

» Hydrogen » Preparation, Properties and Uses of Hydrogen

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

MCQ▾

Question

Heavy water is used in atomic reactor as?

Choices

Choice (4) Response

a.

Neither coolant nor moderator

b.

Coolant

c.

Moderator

d.

Moderator and coolant

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