NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 458 - 461 of 1259

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Question number: 458

» Hydrogen » Physical and Chemical Properties of Water

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MCQ▾

Question

The exhausted permutit is generally regenerated by percolating through it a solution of?

Choices

Choice (4)Response

a.

Sodium chloride

b.

Barium chloride

c.

Magnesium chloride

d.

Calcium chloride

Question number: 459

» Basic Concepts in Chemistry » Concept of Atom, Molecule, Element and Compound

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Question

Two elements X and Y have atomic weights of 14 and 16. They form a series of compounds A, B, C, D and E in which the same amount of element X, Y is present in the ratio 1: 2: 3: 4: 5. If the compound A has 28 parts by weight of X and 16 parts by weight of Y, then the compound of C will have 28 parts weight of X and

Choices

Choice (4)Response

a.

48 parts by weight of Y

b.

80 parts by weight of Y

c.

64 parts by weight of Y

d.

32 parts by weight of Y

Question number: 460

» Hydrogen » Isotopes

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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.

1

d.

3

Question number: 461

» Atomic Structure » Heisenberg Uncertainty Principle

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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

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