Question

Which of the following has the defects like local action and polarization?

• A. Daniel cell
• B. Voltaic cell
• C. Leclanche cell
• D. dry cell

Answer 1

The correct option is B

Voltaic cell

The explanation for the correct option:

1. Local action defect is a result of impurities present in a cell due to which electric discharge continues even when the battery is not connected in a closed circuit.
2. Polarization is a defect that happens in electric cells due to the amassing of hydrogen gas around the positive anode.
3. In basic cells, hydrogen gas is evolved as a result of chemical reactions occurring inside a cell.
4. These are the two major defects in a voltaic cell.

The explanation for the incorrect option:

Option ( A)

Daniel cell is considered an improved version of the voltaic cell which reduces the polarization defect

Option ( c)

1. The Leclanché cell is a battery invented and patented by the French scientist Georges Leclanché in 1866.
2. The battery contained a conducting solution of ammonium chloride, a cathode of carbon, a depolarizer of manganese dioxide, and an anode of zinc.

Option ( D)

A dry cell has a leakage defect when it is not in use it continues to slowly react with zinc can leading to the wearing away of zinc which in turn causes zinc to corrode and electrolytes to leak out.

Hence option B is correct, the defects such as local action and polarization are mainly in a voltaic cell