During charging of a secondary cell, the ………….. energy changes into ………….. energy and gets stored in the cell.

1. mechanical, chemical
2. chemical, electrical
3. mechanical, electrical
4. electrical, chemical

Primary cells provide current as a result of ………….. chemical reaction and secondary cells provide current as a result of ………….. reaction.

1. reversible, reversible
2. reversible, irreversible
3. irreversible, reversible
4. irreversible, irreversible

Identify the correct statement (s)

(i) Primary cell is capable of giving low as well as high current whereas secondary cells provide a weak current only.

(ii) The internal resistance of primary cells is low and that of secondary cells is high.

1. (i)
2. (ii)
3. both (i) and (ii)
4. none of the above

Current is the rate of flow of charge across a cross-section …………… the flow of current.

1. in any direction of
2. in a parallel direction to
3. in the same direction as
4. normal to the direction of