NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 271 - 278 of 1258

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Question number: 271

» P-Block Elements Group 13 to 18 » Group 17 » Hydrogen Halides

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MCQ▾

Question

HBr and HI cannot be prepared by heating bromides and iodides with concentrated H2SO4 because?

Choices

Choice (4)Response

a.

HBr and HI are weak reducing agent

b.

HBr and HI are strong reducing agents

c.

HBr and HI are weak oxidizing agent

d.

HBr and HI are strong oxidizing agents

Question number: 272

» P-Block Elements Group 13 to 18 » Group 16 » Allotropic Forms of Sulphur

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MCQ▾

Question

Water is liquid while H2S is a gas, why?

Choices

Choice (4)Response

a.

The oxygen is more electronegative than Sulphur

b.

H-S bond is weaker than H-O bond

c.

Hydrogen bonding present in H2O

d.

Both a. and c. are correct

Question number: 273

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

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MCQ▾

Question

The equivalent wt. of a metal is double that of oxygen. How many times is weight of its oxide greater than the wt. of metal?

Choices

Choice (4)Response

a.

0.25

b.

3

c.

1.5

d.

2

Question number: 274

» Atomic Structure » Hund's Rule

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MCQ▾

Question

For a given electron configuration, the term with maximum multiplicity has the lowest energy. This rule was proposed by-

Choices

Choice (4)Response

a.

Pauli

b.

Hund

c.

Aufbau

d.

Dalton

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

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