Free Chemistry04 Practice Test - IAS 

Question 1

Which one of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch, electric shavers etc?

A. Nickel and cadmium
B. Zinc and carbon
C. Lead peroxide and lead
D. Iron and cadmium

SOLUTION

Solution : A

Option: (a)

Question 2

Which of the following statements are correct?
(a) Teflon and dacron are polymers
(b) Neoprene is synthetic rubber
(c) Polythene is polyethylene polymer
(d) Natural rubber is chloroprene

A. (a), (b) and (c)
B. (a), (b) and (d)
C. (b), (c) and (d)
D. (a), (c) and (d)

SOLUTION

Solution : A

Option: (a)

Question 3

Physico-chemical characteristics of water in water sources undergo changes due to

A. aquatic macrophytes
B. aquatic fungi
C. effluents
D. evapo-transpiration

SOLUTION

Solution : C

Option: (c)

Question 4

The alpha particle carries two positive charges. Its mass is very nearly equal to that of

A. two protons
B. an atom of helium
C. sum of masses of two positrons and two neutrons
D. two positrons as each positron carries a single positive charge

SOLUTION

Solution : B

Option: (b)

Question 5

The most reactive among the halogens is

A. Fluorine
B. chlorine
C. bromine
D. iodine

SOLUTION

Solution : A

Option: (a)

Question 6

The difference between a nuclear reactor and an atomic bomb is that

A. no chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction
B. the chain reaction in nuclear reactor is controlled
C. the chain reaction in nuclear reactor is not controlled
D. no-chain reaction takes place in atomic bomb while it takes place in nuclear reactor

SOLUTION

Solution : B

Option: (b)

Question 7

Sulphuric acid is used in the manufacture of
(a) Fertilizers
(b) Dyestuff intermediates
(c) Pigments and paints
(d) Storage batteries

A. (a) and (b)
B. (b) and (c)
C. (a), (b), (c) and (d)
D. (a), (c) and (d)

SOLUTION

Solution : C

Option: (c)

Question 8

Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?

A. Aluminium
B. Chromium
C. Nickel
D. Tungsten

SOLUTION

Solution : B

Option: (b)

Question 9

The offending substance in the liquor tragedies leading to blindness etc, is

A. ethyl alcohol
B. amyl alcohol
C. benzyl alcohol
D. methyl alcohol

SOLUTION

Solution : D

Option: (d)

Question 10

The characteristic odor of garlic is due to

A. a chloro compound
B. a sulphur compound
C. a fluorine compound
D. acetic acid

SOLUTION

Solution : B

Option: (b)

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