Questions and answers for exam Preparation

MCQs

Total Questions : 10

Question 1.

Which of the following is not correctly matched?
Element Symbol

(a) Antimony 1. Sb
(b) Tin 2. Ti
(c) Tungsten 3. W
(d) Rhenium 4. Re

Discuss Question

Answer: Option B. -> (b) Tin 2. Ti
:
B

Option: (b)

Question 2.

Match List I and List II and select the correct answer by using the codes given below
List I                                                                            List II
A. Best conductor of heat and electricity          1. Gold
B. Most abundant metal                                       2. Lead
C. Most malleable metal                                       3. Aluminium
D. Poorest conductor of heat                               4. Silver

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

Discuss Question

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

Option: (d)

Question 3.

Consider the following statements
(a) Marble is a constituent of tooth paste.
(b) Gypsum is used for the manufacture of ammonium sulphate
Which of the statements given above is/are correct?

(a) only
(b) only
Both (a) and (b)
Neither (a) nor (b)

Discuss Question

Answer: Option C. -> Both (a) and (b)
:
C

Option: (c)

Question 4.

Match List I and List II and select the correct
List I                                List II
(Element)           (Nature element)
A. Sodium              1. Gas
B. Phosphorus      2. Halogen
C. Iodine                3. Alkali metal
D. Radon               4. Transition metal
                               5. Non-metal

2 5 3 1
3 5 2 1
4 2 3 1
5 3 4 2

Discuss Question

Answer: Option B. -> 3 5 2 1
:
B

Option: (b)

Question 5.

Which of the following statements about 'dry ice' are correct?
(a) It is a useful refrigerant.
(b) On heating, it turns into a liquid.
(c) It has acidic properties
(d) It causes burns when pressed against the skin.

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

Discuss Question

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

Option: (d)

Question 6.

Match List I with List II and select the correct answer by using the codes given below.
List I                                       List II
A. Nitrolime                      1. Rocket fuel
B. Sodium thiosulphate 2. Refrigerant
C. Liquid ammonia          3. Photography
D. Hydrazine                    4. Fertilizer

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

Discuss Question

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

Option: (d)

Question 7.

Match List I and List II and select the correct answer by using the codes given below.
List I (Copper alloys)           List II (Use)
A. Brass                           1. Gears and bearings
B. Bronze                        2. Caps of cartidges
C. Gun metal                  3. Springs and suspension filaments in electrical instruments
D. Phosphor bronze      4. Resistance wire
E. German silver            5. Control valves

2 5 1 3 4
2 3 4 1 5
3 1 2 5 4
3 5 2 1 4

Discuss Question

Answer: Option A. -> 2 5 1 3 4
:
A

Option: (a)

Question 8.

Water is a good fire extinguisher because
(a) the specific heat of water is high
(b) steam, formed as the water boils in contact with the burning object, forms an envelop and shuts off oxygen supply

(a) only
(b) only
Both (a) and (b)
Neither (a) nor (b)

Discuss Question

Answer: Option C. -> Both (a) and (b)
:
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. Nitroglycerine            1. Anaesthetic
B. Nitrous                        2. Antiseptic
C. Potassium Chloride   3. Explosive
D. Picric acid                   4. Electrolyte

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

Discuss Question

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

Option: (b)

Question 10.

The fractionation of petroleum gives many products. What is the correct order in which the various fractions mentioned below separate from petroleum?
(a) Gasoline
(b) Kerosene
(c) Diesel oil
(d) Lubricating oil