NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 275 - 280 of 1258

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Question number: 275

» P-Block Elements Group 13 to 18 » Group 16 » Structures of Oxoacids of Sulphur

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MCQ▾

Question

What is the formula of Marshall’s acid?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 276

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

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MCQ▾

Question

10 ml of (N/2) , 30 ml of ( ) and 75 ml of ( ) are mixed; the normality of in the resulting solution is-

Choices

Choice (4) Response

a.

0.5

b.

0.2

c.

0.25

d.

0.1

Question number: 277

» P-Block Elements Group 13 to 18 » Group 18 » Structures of Fluorides

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MCQ▾

Question

Which of the following compound is cannot be formed by xenon?

Choices

Choice (4) Response

a.

XeF5

b.

XeF3

c.

XeF

d.

All a. , b. and c. are correct

Question number: 278

» Basic Concepts in Chemistry » Mole Concept

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Equivalent weight of in is 31.8 and in is 63.6.

Reason (Ꭱ)

Equivalent weight of an element

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is true but Ꭱ is false

Question number: 279

» Atomic Structure » Quantum Mechanics

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MCQ▾

Question

The wave-mechanical model of atom is based upon -

Choices

Choice (4) Response

a.

De Broglie concept of dual character of matter

b.

Schrodinger wave equation

c.

Heisenberg’s uncertainty principle

d.

All a. , b. and c. are correct

Question number: 280

» P-Block Elements Group 13 to 18 » Group 18 » Noble Gases

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MCQ▾

Question

Number of atoms of He in 100 amu of He are?

Choices

Choice (4) Response

a.

b.

c.

100

d.

25