Chemistry-Physical and Chemical Changes (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 19 - 23 of 44

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Question number: 19

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Consider the following statements.

I. Chloralkali process is the process of electrolysis of Equation solution.

II. During electrolysis, Equation gas is produced at anode and Equation gas is produced at cathode.

Which of the above statements (s) is/are correct?

Choices

Choice (4) Response

a.

I and II

b.

Only I

c.

I nor II

d.

Only II

Question number: 20

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Ammonia on combining with hydrochloric acid, form dense white fumes of

Choices

Choice (4) Response

a.

ammonium chloride

b.

ammonium perchlorate

c.

ammonium hydrogen carbonate

d.

All of the above

Question number: 21

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

A student took five test tubes containing solutions of different colors marked I, II, III, IV and V as shown below. The test tubes containing copper sulphate and ferrous sulphate solution could be the tubes

Five test tubes containing different colors

Five Test Tubes Containing Different Colors

Find the test tube containing copper sulphate and ferrous sulphate

Choices

Choice (4) Response

a.

Ill and V

b.

I and V

c.

II and IV

d.

IV and V

Question number: 22

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

When ethanol is heated with cone Equation at a temperature of 170°C, it gets converted into ethane acid. In this reaction cone Equation plays a role of

Choices

Choice (4) Response

a.

oxidizing agent

b.

dehydrating agent

c.

reducing agent

d.

catalyst

Question number: 23

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

10 mL of dilute acetic acid was added to 10 mL of water and this mixture was shaken for a minute. It was observed that

Choices

Choice (4) Response

a.

water formed a separate layer at the bottom

b.

a clear solution was formed

c.

the acid formed a separate layer at the bottom

d.

the turbidity appeared in the test tube

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