Dry Cells MCQ (Multiple Choice Questions) PDF Download

In a dry cell, leaking occurs because

1. zinc electrode has dissolved away
2. carbon electrode has dissolved away
3. manganese oxide has been used up
4. polarization cannot more be prevented at carbon electrode

Advantages of dry cells offer are that they are

1. cheap
2. convenient
3. portable
4. all of above

Selective charges occur for the

1. ions which require least energy to be discharged
2. ions which require most energy to be discharged
3. elements of group VII
4. metal chlorides

In a dry cell, electrolyte paste is formed of

1. ammonium sulphate
2. ammonium nitrate
3. ammonium chloride
4. zinc sulphate

Selective discharge occurs if

1. more difference is in the reactivity series
2. low difference is in the activity series
3. more than one type of anions is attracted to cathode
4. more than one type of anions or Cations are attracted to the cathode or anode