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MCQs

Total Questions : 740 | Page 70 of 74 pages
Question 691. Depression in freezing point is also called
  1.    Ebullioscopy constant
  2.    Cryoscopy constant
  3.    Rate constant
  4.    General gas constant
 Discuss Question
Answer: Option B. -> Cryoscopy constant
Answer: (b).Cryoscopy constant
Question 692. Molal boiling point constant Kb depends upon
  1.    Nature of the liquid
  2.    Concentration of solute
  3.    Both concentration and nature of solute
  4.    Concentration of liquid
 Discuss Question
Answer: Option B. -> Concentration of solute
Answer: (b).Concentration of solute
Question 693. Colligative properties are
  1.    Depression of freezing point
  2.    Elevation of boiling point
  3.    Lowering of vapour pressure
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Answer: (d).All of above
Question 694. Which of the following has maximum freezing point
  1.    1m Urea
  2.    1m NaCl
  3.    1m CaCl₂
  4.    1mKCl
 Discuss Question
Answer: Option C. -> 1m CaCl₂
Answer: (c).1m CaCl₂
Question 695. Following agent is used in radiator of an automobile as an antifreeze
  1.    Ethyl alcohol
  2.    Ethyl ether
  3.    Ethylene glycol
  4.    All of above
 Discuss Question
Answer: Option C. -> Ethylene glycol
Answer: (c).Ethylene glycol
Question 696. A mixture
  1.    is not a pure substance
  2.    is not formed through chemical reaction
  3.    is a pure substance
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 697. S is symbol of
  1.    silver
  2.    sodium
  3.    Sulphur
  4.    Selenium
 Discuss Question
Answer: Option C. -> Sulphur
Answer: (c).Sulphur
Question 698. Physical properties are individual and not result of constituting elements in
  1.    metals
  2.    non-metals
  3.    mixtures
  4.    compounds
 Discuss Question
Answer: Option D. -> compounds
Answer: (d).compounds
Question 699. Most common element in air is
  1.    hydrogen
  2.    nitrogen
  3.    oxygen
  4.    carbon
 Discuss Question
Answer: Option B. -> nitrogen
Answer: (b).nitrogen
Question 700. The lowest density of metals provided is of
  1.    Be
  2.    Ca
  3.    Sr
  4.    Mg
 Discuss Question
Answer: Option B. -> Ca
Answer: (b).Ca

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