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MCQs

Total Questions : 204 | Page 20 of 21 pages
Question 191. The compound with the largest values of heat capacity is
  1.    Solid
  2.    Liquid
  3.    Gas
  4.    All of above
 Discuss Question
Answer: Option B. -> Liquid
Answer: (b).Liquid
Question 192. In the flat area of heating curve graph, the potential energy of system
  1.    Increases
  2.    Decreases
  3.    Remains constant
  4.    Never change
 Discuss Question
Answer: Option A. -> Increases
Answer: (a).Increases
Question 193. On the heating curve graph, there are parts
  1.    Two
  2.    Three
  3.    Four
  4.    Five
 Discuss Question
Answer: Option B. -> Three
Answer: (b).Three
Question 194. When the temperature of the system remains constant, the graph shows
  1.    Slanted area
  2.    Flat area
  3.    Straight line
  4.    Any of above
 Discuss Question
Answer: Option C. -> Straight line
Answer: (c).Straight line
Question 195. Purpose of a voltmeter is to
  1.    ensure constant flow of electricity
  2.    measure amount of current
  3.    measure voltage of cells and batteries
  4.    help bulbs to glow
 Discuss Question
Answer: Option C. -> measure voltage of cells and batteries
Answer: (c).measure voltage of cells and batteries
Question 196. Difficulty of discharge is lowest in
  1.    calcium ions
  2.    sodium ions
  3.    magnesium ions
  4.    zinc ions
 Discuss Question
Answer: Option D. -> zinc ions
Answer: (d).zinc ions
Question 197. In electrolysis of dilute Hydrochloric Acid (HCl(aq)), at anode,
  1.    oxygen gas is given off
  2.    hydrogen gas is given off
  3.    chlorine gas is given off
  4.    hydrogen chloride gas is given off
 Discuss Question
Answer: Option A. -> oxygen gas is given off
Answer: (a).oxygen gas is given off
Question 198. In a dry cell, polarization
  1.    cannot be prevented
  2.    is prevented through ammonium nitrate mixture
  3.    is prevented through magnese oxide
  4.    is prevented through a NaOH mixture
 Discuss Question
Answer: Option C. -> is prevented through magnese oxide
Answer: (c).is prevented through magnese oxide
Question 199. Ethanol C₂H₅OH(I) is an example of
  1.    strong electrolyte
  2.    non-electrolyte
  3.    weak electrolyte
  4.    carboxylic acid
 Discuss Question
Answer: Option B. -> non-electrolyte
Answer: (b).non-electrolyte
Question 200. Least reactive metal in given series is
  1.    tin
  2.    copper
  3.    lead
  4.    silver
 Discuss Question
Answer: Option D. -> silver
Answer: (d).silver

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