Questions and answers for exam Preparation

MCQs

Total Questions : 10

Question 1.

Atmospheric air contains the following in varying amounts
(a) Nitrogen
(b) Carbon dioxide
(c) Argon
(d) Oxygen

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

Discuss Question

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

Option: (d)

Question 2.

The symbols used to denote different elements are generally the first or the first two letters of the name by which the particular element is commonly known. Which of the following elements do not fall in this category?
(a) Osmium
(b) Tungsten
(c) Silver
(d) Antimony

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

Discuss Question

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

Option: (c)

Question 3.

Match List I and List II and select the correct answer by using the codes given below.
List I (Type of Mixture)                            List II (Method of Separation)
A. Insoluble solid and liquid                  1. Distillation
B. Two immiscible liquids`                     2. Evaporation
C. Soluble solid and liquid                      3. Use of separating
D. Completely miscible liquids              4. Decantation

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

Discuss Question

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

Option: (d)

Question 4.

Match List I and List II and select the correct answer by using the codes given below.
List I                            List II
A. Butadiene           1. Match industry
B. Lead tetraethyl 2. Dye industry
C. Phosphorus        3. Rubber industry
D. Aniline                4. Petroleum industry

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

Discuss Question

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

Option: (c)

Question 5.

An atom has 17 electrons, 17 protons, 18 neutrons. Therefore which of the following is/are true?
(a) Its atomic number is 17
(b) Its mass number is 35

Only (a)
Only (b)
(a) and (b)
Neither (a) nor (b)

Discuss Question

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

Option: (c)

Question 6.

Match List I and List II and select the correct
List I (Theory)                               List II (Scientist)
A. Theory Nuclear Fission    1. George Gamow
B. Big Bang Theory                2. W. Heisenberg
C. Quantum Theory               3. Bohr and Wheeler
D. Wave Theory of Light       4. Huygens

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

Discuss Question

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

Option: (a)

Question 7.

Consider the following statements
(a) Copper
(b) Gold
(c) Platinum
(d) Silver
Which of the above elements exist free in nature?

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

Discuss Question

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

Option: (b)

Question 8.

Match List I and List II and select the correct Answer by using the codes given below lists.
List I                               List II
(Drugs/Chemicals) (Their Uses)
A. Atropine              1. Local anaesthesia
B. Ether                    2. Heart trouble
C. Nitroglycerine    3. Dilation of pupil
D. Pyrethrin            4. Mosquito control

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

Discuss Question

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

Option: (d)

Question 9.

Match List I and List II and select the correct answer by using the codes given below.
List I                                                       List II
A. Pure water from the sea       1. Sublimation
B. Gasoline from crude oil         2. Evaporation
C. Table salt from sea water     3. Distillation
D. Purified camphor                   4. Fractional distillation

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

Discuss Question

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

Option: (c)

Question 10.

Consider the following statements
(a) Baking soda is used in fire extinguishers
(b) Quicklime is used in the manufacture of glass
(c) Gypsum is used in the manufacture of Plaster of Paris
Which of the statements given above is/are correct?