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MCQs

Total Questions : 137 | Page 13 of 14 pages
Question 121. Which one of the following is used as an explosive?
  1.    Phosphorus trichloride
  2.    Mercuric oxide
  3.    Graphite
  4.    Nitroglycerine
 Discuss Question
Answer: Option D. -> Nitroglycerine
:
D
Option: (d)
Question 122. Which one of the following has the highest fuel value?
  1.    Hydrogen
  2.    Charcoal
  3.    Natural gas
  4.    Gasoline
 Discuss Question
Answer: Option A. -> Hydrogen
:
A
Option:(a)
Question 123. The water pollution in river is measured by the dissolved amount of
  1.    Chlorine
  2.    ozone
  3.    nitrogen
  4.    oxygen
 Discuss Question
Answer: Option D. -> oxygen
:
D
Option:(d)
Question 124. The alpha particle carries two positive charges. Its mass is very nearly equal to that of
  1.    two protons
  2.    an atom of helium
  3.    sum of masses of two positrons and two neutrons
  4.    two positrons as each positron carries a single positive charge
 Discuss Question
Answer: Option B. -> an atom of helium
:
B
Option: (b)
Question 125. The characteristic odor of garlic is due to
  1.    a chloro compound
  2.    a sulphur compound
  3.    a fluorine compound
  4.    acetic acid
 Discuss Question
Answer: Option B. -> a sulphur compound
:
B
Option: (b)
Question 126. Sulphuric acid is used in the manufacture of
(a) Fertilizers
(b) Dyestuff intermediates
(c) Pigments and paints
(d) Storage batteries
  1.    (a) and (b)
  2.    (b) and (c)
  3.    (a), (b), (c) and (d)
  4.    (a), (c) and (d)
 Discuss Question
Answer: Option C. -> (a), (b), (c) and (d)
:
C
Option:(c)
Question 127. The most reactive among the halogens is
  1.    Fluorine
  2.    chlorine
  3.    bromine
  4.    iodine
 Discuss Question
Answer: Option A. -> Fluorine
:
A
Option: (a)
Question 128. Which one of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch, electric shavers etc?
  1.    Nickel and cadmium
  2.    Zinc and carbon
  3.    Lead peroxide and lead
  4.    Iron and cadmium
 Discuss Question
Answer: Option A. -> Nickel and cadmium
:
A
Option: (a)
Question 129. The offending substance in the liquor tragedies leading to blindness etc, is
  1.    ethyl alcohol
  2.    amyl alcohol
  3.    benzyl alcohol
  4.    methyl alcohol
 Discuss Question
Answer: Option D. -> methyl alcohol
:
D
Option: (d)
Question 130. The difference between a nuclear reactor and an atomic bomb is that
  1.    no chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction
  2.    the chain reaction in nuclear reactor is controlled
  3.    the chain reaction in nuclear reactor is not controlled
  4.    no-chain reaction takes place in atomic bomb while it takes place in nuclear reactor
 Discuss Question
Answer: Option B. -> the chain reaction in nuclear reactor is controlled
:
B
Option: (b)

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