General Science - Chemistry MCQ's




All Questions are from Year - 2018 or older

Question 301 :
Which of the inert gases can form compounds?

  1. Helium
  2. Xenon
  3. Krypton
  4. Argon
  

Question 302 :
Zinc sulphide is commonly used as

  1. fungicide
  2. herbidide
  3. rodenticide
  4. deodorant
  

Question 303 :
Sour milk contains

  1. acetic acid
  2. tartaric acid
  3. citric acid
  4. lactic acid
  

Question 304 :
Aspirin is chemically known as

  1. methyl salicylate
  2. hydroxysalicylate
  3. acetylsalicyclic acid
  4. alkylsalicylic acid
  

Question 305 :
The fuel used in an atomic reactor is

  1. Coal
  2. Petrol
  3. Combustable gases
  4. Uranium
  

Question 306 :
Petroleum is a mixture of

  1. elements
  2. hydrocarbons
  3. polymers
  4. salts
  

Question 307 :
The lustre of the metals is because of

  1. high density due to closed packing of atoms
  2. high polish
  3. reflection of light due to the presence of free electrons
  4. absorption of light due to the presence of cavities
  

Question 308 :
Which of the following processes is used for theproduction of Biodiesel?

  1. Transamination
  2. Transcription
  3. Trans esterification
  4. Translation
  

Question 309 :
Carbon monoxide is an inflammable gas. Which one of the following is also inflammable?

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

Question 310 :
The element used for making solar cells is

  1. Magnesium
  2. Sodium
  3. Calcium
  4. Silicon
  

Question 311 :
Which of the following alkali metals has highest specific heat?

  1. Cesium
  2. Rubidium
  3. Potassium
  4. lithium
  

Question 312 :
Muscle fatigue is caused by the accumulation of:

  1. Pyruvic acid
  2. Lactic acid
  3. Oxaiacetic acid
  4. Uric acid
  

Question 313 :
The acid rain destroys vegetations because it contains

  1. nitric acid
  2. ozone
  3. carbon monoxide
  4. sulphuric acid
  

Question 314 :
What is milk of magnesia' chemically ?

  1. Magnesium carbonate
  2. Sodium bicarbonate
  3. Calcium hydroxide
  4. Magnesium hydroxide
  

Question 315 :
Which one of the following is extensively used for sterilizing water ?

  1. Bleaching powder
  2. Alum
  3. Borax powder
  4. Soda powder
  

Question 316 :
Milk tastes sour when it is left in open for some time. This happens due to the formation of

  1. Lactic acid
  2. Citric acid
  3. Acetic acid
  4. Carbonic acid
  

Question 317 :
The charcoal used to decolourise brown sugar solution is

  1. Wood charcoal
  2. Coconut charcoal
  3. Animal charcoal
  4. Sugar charcoal
  

Question 318 :
For generation of biogas the materials commonly used are

  1. Animal wastes
  2. Crop residues
  3. Aquatic plants
  4. Forest residues.
  

Question 319 :
The addition of gypsum to Portland cement helps in :

  1. increasing the strength of cement
  2. rapid setting of cement
  3. preventing rapid setting of cement
  4. reduction in the cost of cement
  

Question 320 :
The most commonly used chemicals in the artificial rainmaking or cloud seeding are

  1. Silver Iodide (AgI)
  2. Sodium Chloride (NaCl)
  3. Dry Ice (Frozen CO2)
  4. All of the above
  

Question 321 :
An emulsion is a colloid of a

  1. gas in a liquid
  2. liquid in a liquid
  3. liquid in a gas
  4. gas in a solid
  

Question 322 :
The major constituent of gobar gas is

  1. Carbon dioxide
  2. Methane
  3. Butane
  4. isobutane
  

Question 323 :
Which one of the following is not a greenhouse gas ?

  1. Chlorofluorocarbons
  2. Methane
  3. Carbon dioxide
  4. Nitrogen
  

Question 324 :
Which gas does not form the part of atmosphere ?

  1. Nitrogen
  2. Helium
  3. Chlorine
  4. None of the above
  

Question 325 :
The Fungus which is used in the alcohol industry is .

  1. Mushroom
  2. Candida Aibicans
  3. Yeast
  4. Rhizopus
  

Question 326 :
The element used in the manufacture of safety matches is

  1. Phosphorous
  2. Magnesium
  3. Silicon
  4. Sulphur
  

Question 327 :
The material used in the manufacture of lead pencil is

  1. Graphite
  2. Lead
  3. Carbon
  4. Mica
  

Question 328 :
The chemical name of ratpoison is H

  1. zinc oxide
  2. potassium cyanide
  3. lead nitrate
  4. zinc phosphide
  

Question 329 :
The metal extracted from Bauxite is

  1. Silver
  2. Copper
  3. Manganese
  4. Aluminum
  

Question 330 :
Which one of the following pairs is NOT correctly matched?

  1. Haematite: Copper
  2. Bauxite: Aluminium
  3. Monazite: Thorium
  4. Pitchblende : Uranium
  
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