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MCQs

Total Questions : 32 | Page 1 of 4 pages
Question 1. The process in which substance gains electrons is called
  1.    oxidation
  2.    hydrogenation
  3.    sublimation
  4.    reduction
 Discuss Question
Answer: Option D. -> reduction
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2. The electrolyte used for tin plating is
  1.    sulphide ore
  2.    stannous sulphate
  3.    hydrogen sulphate
  4.    sodium chloride
 Discuss Question
Answer: Option B. -> stannous sulphate
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3. Corrosion can be prevented by
  1.    Alloying
  2.    Tinning
  3.    Galvanizing
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 4. On an industrial scale, sodium metal is prepared by electrolysis of fused
  1.    NaOH
  2.    NaCl
  3.    NaO
  4.    NH3
 Discuss Question
Answer: Option B. -> NaCl
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 5. An electrolytic cell uses electrical energy to drive
  1.    chemical reaction
  2.    physical reaction
  3.    no reaction
  4.    biochemical reaction
 Discuss Question
Answer: Option A. -> chemical reaction
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 6. The elements whose oxidation number is increased are
  1.    reduced
  2.    hydrogenated
  3.    oxidized
  4.    oxygenated
 Discuss Question
Answer: Option C. -> oxidized
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 7. Loss of hydrogen atoms by an element is called
  1.    hydrogenation
  2.    oxidation
  3.    reduction
  4.    sublimation
 Discuss Question
Answer: Option B. -> oxidation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 8. The oxidation state of group IIIA metals is
  1.    -3
  2.    3
  3.    0
  4.    1
 Discuss Question
Answer: Option B. -> 3
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 9. In a dry cell, the anode is made up of
  1.    zinc
  2.    calcium
  3.    sodium
  4.    graphite
 Discuss Question
Answer: Option D. -> graphite
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 10. An electrochemical cell is also called
  1.    battery cell
  2.    galvanic cell
  3.    cell
  4.    chargeable cell
 Discuss Question
Answer: Option B. -> galvanic cell
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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