NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 460 - 465 of 1195

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Question number: 460

» Hydrogen » Isotopes

MCQ▾

Question

If an isotope of hydrogen has two neutrons in its atom. Its atomic mass will be?

Choices

Choice (4) Response

a.

4

b.

2

c.

3

d.

1

Question number: 461

» Atomic Structure » Heisenberg Uncertainty Principle

MCQ▾

Question

Choose the correct option?

Choices

Choice (4) Response

a.

Shapes of orbitals are functional representation of mathematical solutions of Schrodinger equations. They do not represent any picture of electric charge or matter.

b.

Smaller the wavelength of the electron wave more is the resolving power of the electron microscope.

c.

Uncertainty in measurement is not due to lack of any experimental technique but due to nature of subatomic particle itself.

d.

All a. , b. and c. are correct

Question number: 462

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

MCQ▾

Question

Which one of the following does not represent Boyles law?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 463

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

MCQ▾

Question

At what temperature is the kinetic energy of a gas molecule half of its value at 327℃?

Choices

Choice (4) Response

a.

13.5 ℃

b.

-123 ℃

c.

45℃

d.

27℃

Question number: 464

» States of Matter » Gaseous State » Concept of Average, Root Mean Square and Most Probable Velocities

MCQ▾

Question

Calculate the root mean square speed of hydrogen molecule at STP?

Choices

Choice (4) Response

a.

1844.9 ms-1

b.

1722.7 ms-1

c.

156 ms-1

d.

1454.8 ms-1

Question number: 465

» States of Matter » Gaseous State » Concept of Average, Root Mean Square and Most Probable Velocities

MCQ▾

Question

The root mean square speed at NTP of the species can be calculated from the expression?

Choices

Choice (4) Response

a.

b.

c.

d.

All a. , b. and c. are correct

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