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CHEMISTRY MCQs

Total Questions : 1203 | Page 120 of 121 pages
Question 1191. . The National Chemical Laboratory is situated in
  1.    New Delhi
  2.    Bangalore
  3.    Pune
  4.    Patna
 Discuss Question
Answer: Option C. -> Pune
Question 1192. . The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is
  1.    chain isomerism
  2.    functional group isomerism
  3.    positional isomerism
  4.    metamerism
 Discuss Question
Answer: Option C. -> positional isomerism
Question 1193. . Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be
  1.    2 : 16 : 2
  2.    2 : 16 : 1
  3.    1 : 16 : 2
  4.    1 : 1 : 1
 Discuss Question
Answer: Option C. -> 1 : 16 : 2
Question 1194. . The maximum number of covalent formed by nitrogen is
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option D. -> 4
Question 1195. . The mass number of an atom is equal to
  1.    the number of protons
  2.    the number of protons and electrons
  3.    the number of nucleons
  4.    the number of neutrons
 Discuss Question
Answer: Option C. -> the number of nucleons
Question 1196. . The formula C6H5-CO-CH3 represents
  1.    Acetone
  2.    Acetic acid
  3.    Acetophenone
  4.    Phenyl acetate
 Discuss Question
Answer: Option C. -> Acetophenone
Question 1197. . 
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
  1.    liquation
  2.    leaching
  3.    levigation
  4.    magnetic separation
 Discuss Question
Answer: Option C. -> levigation
Question 1198. . The metal that is usually extracted from sea water is
  1.    Ca
  2.    Na
  3.    K
  4.    Mg
 Discuss Question
Answer: Option D. -> Mg
Question 1199. . The inert gases are ____ in water
  1.    sparingly soluble
  2.    insoluble
  3.    soluble
  4.    None of these
 Discuss Question
Answer: Option A. -> sparingly soluble
Question 1200. . The molecular formula of phosphorous is
  1.    P1
  2.    P2
  3.    P3
  4.    P4
 Discuss Question
Answer: Option D. -> P4

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