NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 1020 - 1026 of 1259

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Question number: 1020

» Classification of Elements & Periodicity » Periodic Trends

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Question

and are isoelectronic. Their ionic Size follows the order?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1021

» Purification & Characteristics of Organic Compounds » Purification » Chromatography

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Question

In column chromatography, the moving or mobile phase is?

Choices

Choice (4)Response

a.

Absorbent

b.

The substances which are to be separated

c.

Mixture of eluent client and substances to be separated

d.

Eluent

Question number: 1022

» Surface Chemistry » Colloidal State » Preparation and Properties of Colloids

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Question

Which of the following property is associated with gold number?

Choices

Choice (4)Response

a.

Electrophoresis

b.

Protective colloid

c.

Amount of pure gold

d.

Purple of cassias

Question number: 1023

» Solutions » Molarity

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Question

The density of a 2.03M solution of acetic acid in water is 1.017g/ml, what is the molality of the solution? (Molecular mass of acetic acid is 60)

Choices

Choice (4)Response

a.

2.267 M

b.

3.321 M

c.

4.321 M

d.

2.832 M

Question number: 1024

» Surface Chemistry » Colloidal State » Dialysis

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Question

Colloids are purified by which of the following process?

Choices

Choice (4)Response

a.

Brownian motion

b.

Filtration

c.

Dialysis

d.

Precipitation

Question number: 1025

» Purification & Characteristics of Organic Compounds » Qualitative Analysis

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Positive Beilstein test shows that?

Choices

Choice (4)Response

a.

Halogens are surely present

b.

Halogens are present

c.

Halogens may be present

d.

Question does not provide sufficient data or is vague

Question number: 1026

» Surface Chemistry » Colloidal State » Preparation and Properties of Colloids

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Question

Which of the following is used as reducing agent in the preparation of silver solution?

Choices

Choice (4)Response

a.

Hydrazine

b.

Tannic acid

c.

d.

None of the above

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