NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 387 - 393 of 1195

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Question number: 387

» States of Matter » Gaseous State » Gas Laws - Boyle's Law, Charle's Law, Graham's Law of Diffusion

MCQ▾

Question

When the universal gas constant (R) is divided by Avogadro’s number N, their ratio is called?

Choices

Choice (4) Response

a.

Boltzman constant

b.

vander waal constant

c.

planks constant

d.

Rydberg constant

Question number: 388

» States of Matter » Gaseous State » Gas Laws - Boyle's Law, Charle's Law, Graham's Law of Diffusion

MCQ▾

Question

The speed possessed by most of the gaseous molecules is?

Choices

Choice (4) Response

a.

Most propable speed

b.

Average speed

c.

Root mean square speed

d.

Question does not provide sufficient data or is vague

Question number: 389

» Atomic Structure » De-Broglie's Relationship

MCQ▾

Question

with what velocity must an electron travel so that its momentum is equal to that of a photon of wavelength =5200 Å?

Choices

Choice (4) Response

a.

1400m/s

b.

1300m/s

c.

1200m/s

d.

1235m/s

Question number: 390

» Hydrogen » Preparation, Properties and Uses of Hydrogen

MCQ▾

Question

Ortho and Para hydrogen differ in?

Choices

Choice (4) Response

a.

in the number of protons

b.

in the nature of spins of protons

c.

in the molecular mass

d.

in the nature of spins of electrons

Question number: 391

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

MCQ▾

Question

Statues coated with white lead on long exposure to atmosphere turn black due to the formation of?

Choices

Choice (4) Response

a.

Lead oxide

b.

Lead sulphate

c.

Lead sulphide

d.

All of the above

Question number: 392

» Atomic Structure » Shapes of S, P and D - Orbitals

MCQ▾

Question

The orbital having m =- 2 should be present in the following sub-shell.

Choices

Choice (4) Response

a.

s

b.

d

c.

p

d.

None of the above

Question number: 393

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

MCQ▾

Question

Excess of KI and dil H2SO4 were mixed in 50 ml H2O2. The liberated I2 requires 20 ml of Na2S2O3. Find out the strength of H2O2 in g/litre?

Choices

Choice (4) Response

a.

6.8g

b.

0.068 g

c.

68 g

d.

0.68 g

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