Chemistry (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 45 - 49 of 142

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Question number: 45

» Chemistry » Acid Bases and Salt

MCQ▾

Question

Consider the following statements

I. An amphoteric substance can act as both an acid and a base.

II. Bases are sometimes called alkalis.

Which of the statements) given above is/are correct?

Choices

Choice (4) Response

a.

Only I

b.

Only II

c.

I and II

d.

None of the above

Question number: 46

» 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.

IV and V

b.

II and IV

c.

I and V

d.

III and V

Question number: 47

» Chemistry » Structure of Atom

MCQ▾

Question

The most common oxidation number for silicon in a compound would be

Choices

Choice (4) Response

a.

+ 1

b.

+3

c.

+2

d.

+4

Question number: 48

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

What is the most correct name for the ionic compound formed by

Choices

Choice (4) Response

a.

Iron (IV) chloride

b.

Iron (II) chloride

c.

Iron (I) chloride

d.

Iron (III) chloride

Question number: 49

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

A large iceberg melts at the base but not at the top because

Choices

Choice (4) Response

a.

higher pressure at the base lowers the melting point of ice

b.

ice at the base contains impurities

c.

the base of iceberg remains in warmer conditions

d.

ice at the top is different kind

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