Questions and answers for exam Preparation

MCQs

Total Questions : 10

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 2.

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 3.

Salts of which of the following elements provide colors to fireworks?

Zinc and sulphur
Potassium and mercury
Strontium and barium
Chromium and nickel

Discuss Question

Answer: Option C. -> Strontium and barium
:
C

Option: (c)

Question 4.

Consider the following statements
(a) Liquified natural gas (LNG) is liquified under extremely cold temperatures and high pressure to facilitate storage or transportation in specially designed vessels.
(b) First LNG terminal in India was built in Hassan.
(c) Natural gas liquids (NGL) are separated from LPG and these include ethane, propane, butane and natural gasoline.
Which of the statements given above is/are correct?

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

Discuss Question

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

Option: (b)

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. 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 6.

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 7.

Match List I (Fuel Gases) with List II (Major Constituents) and select the correct answer
List I                    List II
A. CNG             1. Carbon monoxide, Hydrogen
B.Coal gas       2. Butane, Propane
C. LPG              3. Methane, Ethane
D. Water gas 4. Hydrogen, Methane, Carbon monoxide

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

Discuss Question

Answer: Option B. -> 3 4 2 1
:
B

Option: (b)

Question 8.

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 9.

Assertion (A) : The main constituent of the liquified petroleum gas is methane.
Reason (R): Methane can be used directly for burning in homes and factories where it can be supplied through pipelines.
Codes

Both A and R are true and R is the correct explanation of A
Both A and R are true R but R not the correct explanation of A
A is true but R is false
A is false but R is true

Discuss Question

Answer: Option D. -> A is false but R is true
:
D

Option: (d)

Question 10.

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