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MCQs

Total Questions : 137 | Page 1 of 14 pages
Question 1. In the process of cleaning, soap functions by
(a) changing hard water into soft water
(b) reducing oily and greasy dirt into colloidal particles
(c) converting the dirt to lather and water soluble particles
(d) increasing the cleansing properties of water
  1.    (a) and (d)
  2.    (b) only
  3.    (c) only
  4.    (d) only
 Discuss Question
Answer: Option B. -> (b) only
:
B
Option:(b)
Question 2. Which of the following statements are correct?
(a) Teflon and dacron are polymers
(b) Neoprene is synthetic rubber
(c) Polythene is polyethylene polymer
(d) Natural rubber is chloroprene
  1.    (a), (b) and (c)
  2.    (a), (b) and (d)
  3.    (b), (c) and (d)
  4.    (a), (c) and (d)
 Discuss Question
Answer: Option A. -> (a), (b) and (c)
:
A
Option: (a)
Question 3. 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
  1.    2   3   4   1
  2.    4   3   2   1
  3.    3   4   2   1
  4.    4   3   1   2
 Discuss Question
Answer: Option C. -> 3   4   2   1
:
C
Option:(c)
Question 4. A system is commonly defined as a group of interacting units or elements that have a common purpose. We call a system as a closed one, when it
(a) has no proper order
(b) exchanges materials with surroundings
(c) does not exchange materials with surroundings
(d) is constantly changing in composition
  1.    (a) and (d)
  2.    (b) only
  3.    (a) and (c)
  4.    (b) and (d)
 Discuss Question
Answer: Option B. -> (b) only
:
B
Option: (b)
Question 5. Which one of the following is not an essential micronutrient for plants?
  1.    Boron
  2.    Zinc
  3.    Sodium
  4.    Copper
 Discuss Question
Answer: Option C. -> Sodium
:
C
Option: (c)
Question 6. Which of the following is/are true regarding a catalyst?
(a) It is a substance which increases the rate of reaction.
(b) It is a substance which reduces the activation energy.
(c) It is a substance which is consumed in the reaction.
  1.    (a) and (b)
  2.    (b) and (c)
  3.    (a) only
  4.    (a) and (c)
 Discuss Question
Answer: Option A. -> (a) and (b)
:
A
Option: (a)
Question 7. Match List I and List II and select the correct
List I                                             List II
A. Limestone                   1. Fertilizer industry
B. Sandstone                   2. Electrical industry
C. Rock phosphate         3. Cement industry
D. Mica                             4. Building material
  1.    1      3      4     2
  2.    3      4     1      2
  3.    3      4      2    1
  4.    4      3     1     2
 Discuss Question
Answer: Option B. -> 3      4     1      2
:
B
Option: (b)
Question 8. Cryogenic engines find applications in
  1.    sub-marine propulsion
  2.    frost-free refrigerators
  3.    rocket technology
  4.    superconductivity
 Discuss Question
Answer: Option C. -> rocket technology
:
C
Option: (c)
Question 9. 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
  1.    3   2   1   4
  2.    2   3   4   1
  3.    4   3   1   2
  4.    1   2   3   4
 Discuss Question
Answer: Option C. -> 4   3   1   2
:
C
Option:(c)
Question 10. 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
  1.    4    2    3    1
  2.    1    2    3    4
  3.    4    3    2    1
  4.    2    1    4    3
 Discuss Question
Answer: Option C. -> 4    3    2    1
:
C
Option: (c)

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