Questions and answers for exam Preparation

MCQs

Total Questions : 137 | Page 12 of 14 pages

Question 111. Consider the following statements
(a) Baking soda is used in fire extinguishers
(b) Quick lime is used in the manufacture of glass
(c) Gypsum is used in the manufacture of cement
Which of the statements given above is/are correct?

(a) and (b)
(b) and (c)
(a) only
(a), (b) and (c)

Discuss Question

Answer: Option D. -> (a), (b) and (c)
:
D
Option:(d)

Question 112. Which one of the following is produced during the formation of photochemical smog?

Hydrocarbons
Nitrogen Oxide
Ozone
Methane

Discuss Question

Answer: Option B. -> Nitrogen Oxide
:
B
Option:(b)

Question 113. Match List I and List II and select the correct answer by using the codes given below the lists.
List I                                 List II
A. Crystallisation        1. Adsorption
B. Sublimation            2. Purification solids of solids
C. Distillation              3. Purification liquids of liquids
D. Chromatography   4. Camphor

2 4 3 1
1 2 3 4
3 2 4 1
4 3 2 1

Discuss Question

Answer: Option A. -> 2 4 3 1
:
A
Option: (a)

Question 114. Match List I and List II and select the correct answer by using the codes given below the lists.
Alloy                         Composition
A. Bronze              1. Lead, antimony, tin
B. Brass                 2. Copper, zinc, nickel
C. German silver 3. Copper, zinc
D. Type metal      4. Copper, tin

2 1 3 4
2 1 3 4
3 2 1 4
4 3 2 1

Discuss Question

Answer: Option D. -> 4 3 2 1
:
D
Option:(d)

Question 115. Which are the materials generally employed as solder in soldering operations in electronics?

Iron and tin
Lead and tin
Aluminium and lead
Aluminium and iron

Discuss Question

Answer: Option B. -> Lead and tin
:
B
Option:(b)

Question 116. Which of the following substances are found in the beach sands of many parts of Kerala?
(a) Limonite
(b) Zircon
(c) Sillimanite
(d) Tungsten
Select the correct answer using the codes given below. Codes

(a), (b), (c) and (d)
(a), (b) and (c) only
(c) and (d) only
(a) and (b) only

Discuss Question

Answer: Option B. -> (a), (b) and (c) only
:
B
Option:(b)

Question 117. Which one of the following was used as a chemical weapon in the First World War?

Carbon monoxide
Hydrogen cyanide
Mustard gas
Water gas

Discuss Question

Answer: Option C. -> Mustard gas
:
C
Option:(c)

Question 118. Match List I with List II and select the correct answer using the codes given below the lists
List I                              List II
A. Blue vitriol    1. Sodium bicarbonate
B. Epsom salt    2. Sodium hydroxide
C. Baking soda 3. Magnesium sulphate
D. Caustic soda 4. Copper sulphate

3 4 2 1
4 3 2 1
3 4 1 2
4 3 1 2

Discuss Question

Answer: Option D. -> 4 3 1 2
:
D
Option:(d)

Question 119. Consider the following
(a) Oxides of hydrogen
(b) Oxides of nitrogen
(c) Oxides of sulphur
Which of the above will cause acid rain?

(a) and (b)
(c) only
(b) and (c)
(a), (b) and (c)

Discuss Question

Answer: Option C. -> (b) and (c)
:
C
Option: (c)

Question 120. Match List I with List II and select the correct answer using the codes given below the lists.
List I                                                  List II
A. Potassium bromide            1. Fertiliser
B. Potassium nitrate               2. Photography
C. Potassium sulphate            3. Bakery
D. Monopotassium tartarate4. Gunpowder