General Science - Chemistry MCQ's




All Questions are from Year - 2018 or older

Question 91 :
Nonstick kitchenwares are coated with

  1. FVC
  2. Graphite
  3. Teflon
  4. Silicon
  

Question 92 :
Iodized salt is beneficial for

  1. lowering of blood pressure
  2. prevention of dehydration
  3. thyroid function
  4. salivary glands
  

Question 93 :
The major harmful gas emitted by automobile vehicles which causes air pollution is

  1. Carbon Monoxide
  2. Methane
  3. Carbon dioxide
  4. Ozone gas
  

Question 94 :
If all bullets could not be removed from gunshot injury of a man it may cause poisoning by

  1. Mercury
  2. Lead
  3. Iron
  4. Arsenic
  

Question 95 :
Which of the following gases is present under pressure in soft drinks?

  1. Oxygen
  2. Nitrogen
  3. Carbon dioxide
  4. Nitrous oxide
  

Question 96 :
The gas used for artificial fruit ripening of green fruit is

  1. Ethylene
  2. Acetylene
  3. Ethane
  4. Methane
  

Question 97 :
The chemical name of 'laughing gas is

  1. Nitric oxide
  2. Nitrogen dioxide
  3. Nitrogen pentoxide
  4. Nitrous oxide
  

Question 98 :
Which halide is used in making sensitive emulsion on photograhic film?

  1. Sodium chloride
  2. Silver bromide
  3. Silver Iodide
  4. Silver chloride
  

Question 99 :
Rock salt is a mineral containing

  1. potassium
  2. magnesium
  3. sodium
  4. iron
  

Question 100 :
In upper layer of atmosphere ozone is formed

  1. the action of ultraviolet rays on oxygen
  2. the combination of oxygen molecules
  3. subjecting oxygen to high pressure
  4. the action of nitrogen on oxygen in atmosphere
  

Question 101 :
Galvanization is the :

  1. deposition of zinc on iron
  2. deposition of tin on Iron
  3. deposition of copper on iron
  4. deposition of aluminum on iron
  

Question 102 :
Aqua regia is a 1:3 mixture by volume of

  1. conc. nitric acid and cone hydrochloric acid
  2. cone hydrochloric acid and cone nitric acid
  3. cone nitric acid and cone sulphuric acid
  4. conc. sulphuric acid and cone nitric acid
  

Question 103 :
Among the following the hardest metal is

  1. Gold
  2. Iron
  3. Platinum
  4. Tungsten
  

Question 104 :
The main constituent of biogas is

  1. oxygen
  2. methane
  3. acetic acid
  4. methyl alcohol
  

Question 105 :
Glass is a

  1. pure solid
  2. supercooled liquid
  3. gel
  4. polymer
  

Question 106 :
Which of the following is used as a lubricant in heavy machines?

  1. Bauxite
  2. Sulphur
  3. Phosphorus
  4. Graphite
  

Question 107 :
Raw materials used for the manufacture of glass are

  1. sand soda limestone
  2. sand charcoal soda
  3. limestone charcoal sulphur
  4. sand sulphur soda
  

Question 108 :
The gas that usually causes explosions in coal mines is

  1. Hydrogen
  2. Carbon monoxide
  3. Air
  4. Methane
  

Question 109 :
Natural rubber is the polymer of:

  1. isoprene
  2. Styrene
  3. Butadiene
  4. Ethylene
  

Question 110 :
The Bhopal gas tragedy was caused by the gas

  1. Methyl chloride
  2. Methyl iso Cyanide
  3. Methyl iso Cyanate
  4. Methyl Cyanide
  

Question 111 :
Type metal used in printing press is an alloy of

  1. lead and copper
  2. lead and antimony
  3. lead and bismuth
  4. lead and zinc.
  

Question 112 :
Molasses a byproduct in the manufacture of sugar is converted into

  1. alcohol
  2. paper
  3. fuel
  4. pulp
  

Question 113 :
Which gas is used as fire extinguisher?

  1. Carbon dioxide
  2. Carbon monoxide
  3. Carbon suboxide
  4. Sulphur dioxide
  

Question 114 :
Ozone consists of

  1. Oxygen only
  2. Oxygen and Nitrogen
  3. Hydrogen and Carbon
  4. Oxygen and Carbon
  

Question 115 :
Which is the purest form of iron ?

  1. Steel
  2. Cast iron
  3. Pig iron
  4. Wrought iron
  

Question 116 :
heart pacemakers is

  1. Uranium
  2. Deuterium
  3. Plutonium
  4. Radium
  

Question 117 :
What happens when a chemical bond is formed ?

  1. energy is always absorbed
  2. energy in always released
  3. more energy is released than is absorbed
  4. energy is neither released nor absorbed
  

Question 118 :
The material known in commerce as Terylene is a

  1. Synthetic fibre
  2. Natural fibre
  3. Modified natural fibre
  4. Blend of cotton and silk
  

Question 119 :
Dry powder fire extinguishers contain

  1. sand
  2. sand and sodium carbonate
  3. sand and potassium carbonate
  4. sand and sodium bicarbonate
  

Question 120 :
Beryllium Sulphate is less soluble in water due to ?

  1. High inflammable energy
  2. Low Energy of dissociation
  3. Low inflammable energy
  4. ionic band
  
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