Free Chemistry09 Practice Test - IAS 

Question 1

Match List I and List II and select the correct
List I                                           List II
A. Diamond                        1. Fertiliser
B. Ammonium Sulphate  2. Oxidising agent
C. Sodium Periodate        3. Dry cells
D. Manganese dioxide    4. Abrasive

A. 4   1   3   2
B. 4   1   2   3
C. 1   4   2   3
D. 1   4   3   2

SOLUTION

Solution : B

Option: (b)

Question 2

Arrange the following metals in the decreasing order of their relative abundance in earth's crust after aluminium
(a) Calcium
(b) Iron
(c) Sodium
(d) Magnesium

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

SOLUTION

Solution : C

Option: (c)

Question 3

When one of the following statements is correct?

A. Liquid sodium is employed as a coolant in nuclear reactors
B. Calcium carbonate is an ingredient of tooth paste
C. Bordeaux mixture consists of sodium sulphate and lime
D. Zinc amalgams are used as a dental filling

SOLUTION

Solution : A

Option: (a)

Question 4

Consider the following chemicals
(a) Benzene
(b) Carbon tetrachloride
(c) Sodium carbonate
(d) Trichloroethylene
Which of the above is/are used as dry cleaning chemical?

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

SOLUTION

Solution : C

Option: (c)

Question 5

Match List I and List II and select the correct answer by using the codes given below the lists.
List I                                  List II
A. Natural gas      1. Protein found in the outer layer of the human skin
B. Mustard gas    2. Solid carbon dioxide
C. Keratin             3. Poisonous liquid used in chemical warfare
D. Dry ice             4. A mixture of gases occurring in pockets below the earth's surface

A. 3   2   1   4
B. 2   3   4   1
C. 4   3   1   2
D. 1   2   3   4

SOLUTION

Solution : C

Option: (c)

Question 6

Which one of the following statements is not correct?

A. The presence of NaCI increases the rate of setting of plaster of Paris
B. Gypsum is added to the cement to slow down its rate of setting
C. All alkaline earth metals form hydrated salts
D. Barium and strontium are found free in nature

SOLUTION

Solution : D

Option: (d)

Question 7

Assertion (A) : In the periodic table of chemical increase from top to bottom in a group
Reason (R) : In a group, the atomic radii generally increase from top to bottom.

A. Both A and R are individually true and R is the correct explanation of A
B. Both A and R are individually true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but is true

SOLUTION

Solution : D

Option: (d)

Question 8

Match List I (Fuel) with List II (Energy value) and select the correct answer by using the codes given below the lists.
List I                       List II
A. Wood            1. 30 MJ/kg
B. Petrol            2. 56 MJ/kg
C. Natural gas  3. 50 MJ/kg
D. Coal              4. 15 MJ/kg

A. 4    2    3    1
B. 1    2    3    4
C. 4    3    2    1
D. 2    1    4    3

SOLUTION

Solution : C

Option: (c)

Question 9

Match List I and List II and select the correct answer by using the codes given below.
List I                                        List II
A. Silver bromide          1. Etching of glass
B. Hydrogen peroxide  2. Purification of air
C. Ozone                         3. Bleaching agent
D. Hydrofluoric acid     4. photography

A. 4   3   2   1
B. 1   3   2   4
C. 4   2   1   3
D. 2   1   3   4

SOLUTION

Solution : A

Option: (a)

Question 10

Regarding the atom of a chemical element, magnetic quantum number refers to

A. orientation
B. shape
C. size
D. spin

SOLUTION

Solution : A

Option: (a)

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