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MCQs

Total Questions : 32 | Page 3 of 4 pages
Question 21. Galvanic cells are also named as
  1.    electrolytic cells
  2.    battery cells
  3.    Daniel cells
  4.    John cells
 Discuss Question
Answer: Option C. -> Daniel cells
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 22. When zinc is plated on steel, the anode is made up of
  1.    steel
  2.    oxygen
  3.    zinc
  4.    carbon
 Discuss Question
Answer: Option C. -> zinc
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 23. A reactant containing the element that is oxidized is called
  1.    reducing agent
  2.    oxidizing agent
  3.    hydrogen
  4.    sublime
 Discuss Question
Answer: Option A. -> reducing agent
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 24. Electrolysis of brine produces
  1.    chlorine gas
  2.    hydrogen gas
  3.    sodium hydroxide
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 25. The electrodes used in the production of sodium metal are
  1.    iron cathode and graphite anode
  2.    sodium cathode and carbon anode
  3.    aluminum cathode and fluoride anode
  4.    aluminum cathode and sodium anode
 Discuss Question
Answer: Option A. -> iron cathode and graphite anode
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 26. In chromium plating, few drops of Sulphuric acid are added to the electrolyte to prevent
  1.    oxidation
  2.    reduction
  3.    hydrolysis
  4.    sublimation
 Discuss Question
Answer: Option C. -> hydrolysis
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 27. By losing one or two electrons the atoms of metal are
  1.    oxidized
  2.    reduced
  3.    hydrogenated
  4.    sublimated
 Discuss Question
Answer: Option A. -> oxidized
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 28. In thermal power stations, carbon atoms undergo oxidation to form
  1.    CO2
  2.    CO
  3.    H2O
  4.    O2
 Discuss Question
Answer: Option A. -> CO2
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 29. A concentrated aqueous solution of sodium chloride is called
  1.    aqueous solution
  2.    salt solution
  3.    brine
  4.    lemonade
 Discuss Question
Answer: Option C. -> brine
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 30. Electrolytes convert electricity in
  1.    solid state
  2.    liquid state
  3.    gaseous state
  4.    plasma state
 Discuss Question
Answer: Option B. -> liquid state
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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