NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 318 - 322 of 1258

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Question number: 318

» Atomic Structure » Heisenberg Uncertainty Principle

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MCQ▾

Question

The uncertainty in position and velocity of a particle are m and 5.27 x ms-1 respectively. Calculate the mass of the particle is (h = 6.625 x Js)

Choices

Choice (4) Response

a.

0.92 kg

b.

0.99 g

c.

0.099 kg

d.

All of the above

Question number: 319

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

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MCQ▾

Question

In acting as a reducing agent, a piece of metal M weighing 16 grams gives up electrons. What is the equivalent weight of the metal?

Choices

Choice (4) Response

a.

32

b.

83.32

c.

42.83

d.

21.33

Question number: 320

» P-Block Elements Group 13 to 18 » Group 16 » Introduction

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MCQ▾

Question

An acidified potassium dichromate paper turns green when exposed to SO2, due to the formation of which compound?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 321

» Basic Concepts in Chemistry » Molar Mass

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MCQ▾

Question

for a reaction:

The correct statements is/are

(1) The equivalent mass of is 41.

(2) is the acid salt

(3) is normal salt

(4) 1 mole of H3PO3 is completely neutralized by 1.5 moles of

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1,2 and 3 are correct

b.

2 and 4 are correct

c.

1 and 2 are correct

d.

1 and 3 are correct

Question number: 322

» P-Block Elements Group 13 to 18 » Group 17 » Introduction

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MCQ▾

Question

As the atomic number of the halogens increases, the halogens?

Choices

Choice (4) Response

a.

lose the outermost electrons less readily

b.

become lighter in colour

c.

become less dense

d.

gain electrons less readily