NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 473 - 478 of 1195

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Question number: 473

» States of Matter » Gaseous State » Concept of Absolute Scale of Temperature

MCQ▾

Question

The critical temperature of gas is that temperature?

Choices

Choice (4) Response

a.

at which the volume of the gas becomes zero

b.

above which it can no longer remain in the gaseous state

c.

at which it solidifies

d.

above which it cannot be liquefied by pressure

Question number: 474

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

MCQ▾

Question

A sample of gas occupies 10 lit under a pressure of 1 atm. If the temperature of the gas does not change, what will be its volume if the pressure is increased to 2 atm?

Choices

Choice (4) Response

a.

6 litre

b.

6.4 litre

c.

5 litre

d.

4 litre

Question number: 475

» Hydrogen » Physical and Chemical Properties of Heavy Water

MCQ▾

Question

A solution of heavy water containing sodium carbonate when electrolyzed, which of the following gas evolve at cathode?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 476

» States of Matter » Solid State » Packing in Solids (Fcc, Bcc and Hcp Lattices)

MCQ▾

Question

The density of KCl is 1.9893g/cm3 and the length of a side of unit cell is 6.2908 A° as determined by X-ray diffraction. Calculate the value of Avogadro’s number?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 477

» States of Matter » Solid State » Packing in Solids (Fcc, Bcc and Hcp Lattices)

MCQ▾

Question

How many elements of symmetry will be possessed by a cubic crystal?

Choices

Choice (4) Response

a.

34

b.

23

c.

16

d.

21

Question number: 478

» States of Matter » Solid State » Packing in Solids (Fcc, Bcc and Hcp Lattices)

MCQ▾

Question

The packing fraction of the element that crystallizes in simple cubic arrangement is?

Choices

Choice (4) Response

a.

π/6

b.

π/2

c.

π/3

d.

π/4

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