General Science - Chemistry MCQ's




All Questions are from Year - 2018 or older

Question 391 :
Polythene is polymer of

  1. Ethylene
  2. Propylene
  3. Acetylene
  4. Aniline
  

Question 392 :
The freezer in a refrigerator isfitted near the top

  1. to keep it away from hot compressor which is nearer to the bottom
  2. because of convenience
  3. it facilitates convection currents .
  4. to minimize power consumption
  

Question 393 :
Ultraviolet radiation striking this earth is due to the depletion of

  1. carbon monoxide
  2. carbon dioxide
  3. ozone
  4. oxygen
  

Question 394 :
Which of the following is not present in German silver?

  1. Copper
  2. Nickel
  3. Silver
  4. Zinc
  

Question 395 :
The metal chiefly used for galvanising iron is

  1. Zinc
  2. Mercury
  3. Cadmium
  4. Tin
  

Question 396 :
Which among the following is pure matter ?

  1. Carbondioxide
  2. Brass
  3. Air
  4. Iron
  

Question 397 :
Milk Sugar is

  1. Lactose
  2. Maltose
  3. Galactose
  4. Sucrose
  

Question 398 :
The atomic number of carbon is 6 and its atomic mass is How many are there protons in the nucleus of carbon ?

  1. 6
  2. 12
  3. 18
  4. Zero
  

Question 399 :
Gobar gas basically contained

  1. Carbon dioxide
  2. Carbon monoxide
  3. Hydrogen sulphide
  4. Methane
  

Question 400 :
The atmospheric gas that is mainly responsible for Green House effect :

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