NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 793 - 799 of 1258

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Question number: 793

» Atomic Structure » De-Broglie's Relationship

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MCQ▾

Question

Which of the following is the de-Broglie wavelength associated with uncharged particles for gas molecules?

Choices

Choice (4) Response

a.

b.

c.

d.

Both b. and a. are correct

Question number: 794

» Basic Concepts in Chemistry » Atomic and Molecular Masses

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MCQ▾

Question

If mass of neutron is assumed to half of it’s original value, whereas that of proton is assumed to be twice of it’s original value then the atomic mass of will be?

Choices

Choice (4) Response

a.

less

b.

more

c.

less

d.

Same

Question number: 795

» Atomic Structure » Rules for Filling Electrons in Orbitals

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MCQ▾

Question

In how many elements does the last electron have the quantum numbers of

Choices

Choice (4) Response

a.

4

b.

10

c.

8

d.

6

Question number: 796

» Hydrocarbons » Alkynes » Addition of Hydrogen, Halogens, Water and Hydrogen Halides

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MCQ▾

Question

When acetylene and sulphur react in the presence of hot iron pyrite, product formed –

Choices

Choice (4) Response

a.

Toluene

b.

Thiophene

c.

Pyrrole

d.

Benzene

Question number: 797

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

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MCQ▾

Question

The equivalent mass of an element is 4. It’s chloride has valency of element is?

Choices

Choice (4) Response

a.

2

b.

4

c.

1

d.

3

Question number: 798

» Biomolecules » Vitamins

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MCQ▾

Question

Which of the following vitamin deficiency can cause rickets decease?

Choices

Choice (4) Response

a.

Vitamin A

b.

Vitamin D

c.

Vitamin C

d.

Vitamin B

Question number: 799

» Hydrocarbons » Alkynes » Addition of Hydrogen, Halogens, Water and Hydrogen Halides

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MCQ▾

Question

CH3-C CH + dil. H2SO4 + Hg+2 ◊ X, what is the ‘X’?

Choices

Choice (4) Response

a.

Butanon

b.

Propylidine hydrogen sulphate

c.

Acetal

d.

Acetone