General Science - Chemistry MCQ's




All Questions are from Year - 2018 or older

Question 181 :
When a spoon is to be electroplated with nickel thespoon is

  1. dipped in a nickel sulphate solution
  2. made anode and a pure nickel rod the cathode
  3. made cathode and a pure nickel red the anode
  4. coated with nickel sulphate and dried
  

Question 182 :
White phosphorus is always kept under

  1. benzene
  2. kerosene
  3. ether
  4. water
  

Question 183 :
The BOD values of water indicate the

  1. amount of organic debris
  2. amount of oxygen used for biochemical oxidation
  3. amount of oxygen used for biochemical reduction
  4. amount of ozone used for biochemical oxidation
  

Question 184 :
Which one of the following is found in kidney stones?

  1. Sodium oxalate
  2. Calcium oxalate
  3. Sodium chloride
  4. Calcium acetate
  

Question 185 :
Water is not effective in extinguishing a fire caused by petrol because

  1. die flame is too hot for water to cool it down
  2. water and petrol react chemically
  3. water and petrol are miscible with each other
  4. water and petrol are immiscible with each other and petrol which forms the upper layer continues to bum
  

Question 186 :
The process of covering water pipes made of Iron with Zinc layer to prevent corrosion is called :

  1. Zinc plating
  2. Alloy formation
  3. Vulcanization
  4. Galvanization
  

Question 187 :
Which of the following substance is highly plastic ?

  1. Quartz
  2. Mica
  3. Granite
  4. Clay
  

Question 188 :
Which one of the following is a microelement?

  1. Chlorine
  2. Hydrogen
  3. Nitrogen
  4. Oxygen
  

Question 189 :
Which of the following imparts deep blue colour to glass ?

  1. Cobalt oxide
  2. Cupric oxide
  3. Ferrous oxide
  4. Nickel oxide
  

Question 190 :
One of the constituents of tear gas is

  1. Ethane
  2. Ethanol
  3. Ether
  4. Chloropicrin
  

Question 191 :
The add used in lead storage cells is

  1. phosphoric acid
  2. hydrochloric acid
  3. nitric acid
  4. sulphuric acid
  

Question 192 :
Which of the following vegetable oils does not contain essential fatty acids ?

  1. Sunflower oil
  2. Mustard oil
  3. Coconut oil
  4. .Groundnut oil
  

Question 193 :
The gas that is used in the manufacture of vanaspati ghee is :

  1. Oxygen
  2. Carbon dioxide
  3. Hydrogen
  4. Nitrogen
  

Question 194 :
Supersonic Jet causes pollution by thinning of

  1. O2 layer
  2. O2 layer
  3. S02 layer
  4. CO2 layer
  

Question 195 :
The process of removing calcium and magnesium from hard water is known as

  1. Sedimentation
  2. Filtration
  3. Flocculation
  4. Water softening
  

Question 196 :
The noble gas used in radiotherapy is

  1. neon
  2. argon
  3. radon
  4. xenon
  

Question 197 :
Which one of the following elements is least likely to be found in commercial fertilisers?

  1. Nitrogen
  2. Phosphorous
  3. Potassium
  4. Silicon
  

Question 198 :
Table salt gets moist during rainy season because

  1. sodium chloride is hygroscopic
  2. sodium chloride is deliquescent
  3. (3 ) sodium chloride contains some quantity of sodium iodide
  4. sodium chloride contains hygroscopic impurities like magnesium chloride
  

Question 199 :
Diamonds are glittering and attractive because light Incident on them undergoes

  1. highest refraction
  2. multiple internal reflections
  3. multiple surface reflections
  4. hundred percent transmission
  

Question 200 :
Gunpowder consist ofa mixture of

  1. sand and TNT
  2. TNT and charcoal
  3. nitre Sulphur and charcoal
  4. Sulphur sand and charcoal
  

Question 201 :
The polymerisation of which of the following is used in manufacturing of polythene in industry ?

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

Question 202 :
The energy of the sun is mainly due to

  1. nuclear fission
  2. radioactivity
  3. heat
  4. nuclear fusion
  

Question 203 :
Curd is sour due to presence of

  1. Tartaric acid
  2. Lactic acid
  3. Acetic acid
  4. Oxalic acid
  

Question 204 :
Petroleum consists of a mixture of

  1. Carbohydrates
  2. Carbonates
  3. Hydrocarbons
  4. Carbide?
  

Question 205 :
Which of the following metals occurs In free state ?

  1. Copper
  2. Iron
  3. Zinc
  4. Lead
  

Question 206 :
Detergents used for cleaning clothes and utensils contain

  1. nitrates
  2. bicarbonates
  3. sulphonates
  4. bismuthates
  

Question 207 :
An example of replenshible energy source is

  1. Coal
  2. Petroleum
  3. Lignite
  4. Biomass
  

Question 208 :
One property of ammonia is

  1. it is insoluble in water.
  2. It is an odourless gas.
  3. It is a yellowish gas
  4. Its aqueous solution turns red litmus blue
  

Question 209 :
Submarines move under water. They have engines that run on

  1. Petrol and oxygen
  2. Diesel
  3. Batteries
  4. Steam
  

Question 210 :
This group of alumino silicate minerals is widely used In making electrical insulators

  1. Bauxite
  2. Chromite
  3. Manganese
  4. Mica
  
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