NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 281 - 288 of 1258

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Question number: 281

» Atomic Structure » Heisenberg Uncertainty Principle

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MCQ▾

Question

If uncertainty in position and momentum are equal, the uncertainty in velocity is –

Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

Question number: 282

» Equilibrium » Ionic Equilibrium » Acid - Base Equilibria

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MCQ▾

Question

0.45 gm. of an acid of mol. wt. 90 was neutralized by 20 ml of 0.5 (N) caustic potash. The basicity of acid is-

Choices

Choice (4) Response

a.

1

b.

3

c.

2

d.

4

Question number: 283

» Atomic Structure » Spin Quantum Number

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MCQ▾

Question

The maximum number of atomic orbitals associated with a principal quantum number 5 is -

Choices

Choice (4) Response

a.

25

b.

12

c.

16

d.

9

Question number: 284

» P-Block Elements Group 13 to 18 » Group 17 » Oxides and Oxoacids of Halogens

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MCQ▾

Question

Which of following oxyacid of chlorine is formed on shaking chlorine water with freshly precipitated yellow oxide of mercury?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 285

» P-Block Elements Group 13 to 18 » Group 17 » Oxides and Oxoacids of Halogens

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MCQ▾

Question

Euchlorine is

Choices

Choice (4) Response

a.

a mixture of Cl2 and Cl2O7

b.

chlorine of europium

c.

a mixture of Cl2 and ClO2

d.

obtained by heating per chlorate with concentrated HCl

Question number: 286

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

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MCQ▾

Question

Which of the following hydrogen halide is least volatile in nature?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 287

» P-Block Elements Group 13 to 18 » Group 18 » Oxides of Xenon

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MCQ▾

Question

Xenon hexafluoride reacts with silica to form a xenon compound X. The oxidation state of Xe in X is?

Choices

Choice (4) Response

a.

+2

b.

+4

c.

+6

d.

0

Question number: 288

» Atomic Structure » Spin Quantum Number

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MCQ▾

Question

Beryllium’s fourth electron will have the four quantum numbers -

n m s

Choices

Choice (4) Response

a.

2 1 0 + 1/2

b.

2 0 0 - 1/2

c.

1 1 1 1/2

d.

1 0 0 1/2