Chemistry (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 36 - 41 of 63

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Question number: 36

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Which of the following are responsible for causing acid rain?

Choices

Choice (4) Response

a.

Oxides of Sulphur and nitrogen

b.

Oxides of nitrogen and carbon monoxide

c.

Oxides of Sulphur and carbon dioxide

d.

Hydrogen sulphide and carbon dioxide

Question number: 37

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Which of the following is a chemical change?

Choices

Choice (4) Response

a.

Burning of magnesium in air

b.

Blowing of wind

c.

Dissolution of sugar in water

d.

Melting of ice

Question number: 38

» Chemistry » Metals & Non Metals

MCQ▾

Question

Among metals, the poorest conductor of heat is

Choices

Choice (4) Response

a.

Tin

b.

Mercury

c.

Bismuth

d.

Lead

Question number: 39

» Chemistry » Metals & Non Metals

MCQ▾

Question

Which one of the following statements is not correct?

Choices

Choice (4) Response

a.

metals possess luster when freshly prepared

b.

metals form basic oxides

c.

metals are solid at room temperature

d.

metals are good conductor of heat and electricity

Question number: 40

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Beakers A, B and C contain zinc sulphate, silver nitrate and iron (II) sulphate solutions, respectively. Copper pieces are added to each beaker. Blue colour will appear to in case of

Choices

Choice (4) Response

a.

beaker B

b.

beaker C

c.

beaker A

d.

Question does not provide sufficient data or is vague

Question number: 41

» Chemistry » Structure of Atom

MCQ▾

Question

a-particles are

Choices

Choice (4) Response

a.

single positive helium nucleus

b.

Neutral helium atom

c.

Double positive helium nucleus

d.

None of the above

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