Secondary Cells

Q.

What happens if you put water in a dry cell battery?

Q.

What is a secondary cell? Give two examples.

Q.

What is a secondary cell ? Name one such cell.

Q.

List out the applications of an electric cell.

Q.

How long does a dry cell battery last?

Q.

Is the dry cell actually dry? If not, why is it called so?

Q.

State whether the following statement is true or false.

In a dry cell, zinc container acts as the positive electrode.

1. True
2. False

Q.

Which of the following electric cells is a primary cell?

1. Lead acid cell

2. Ni−Fe cell

3. Ni−Cd cell

4. Leclanche cell

Q.

If the internal resistance of a cell is infinite, the current in the circuit will be

Q.

What is the best dry cell battery?

Q.

Name any secondary cell?

Q. Which is not different between primary and secondary cell ?

1. Reversibility of chemical reaction
2. Rechargability of cell
3. Supply of energy to external circuit
4. Strength of current

Q. What is advantage of primary cell over secondary cell

1. Its internal resistance is low
2. It is light and cheap
3. It can provide low/high currents
4. It is rechargable

Q.

What is meant by charging a secondary cell?

Q.

Name one primary and one secondary cell.

Q.

Material stuffed in the negative plate of a lead accumulator is,

1. $PbO$

2. $CuS{O}_4$

3. $N{H}_{4}Cl$

4. $P{b}_3{O}_4$

Q.

Write differences between primary cells and secondary cells?

Q. Why does the bulb glow brighter when electric cells are connected in series?

Q.

Name two cells that belong to the category of the primary cell?

Q. The value of emf of a cell in a closed circuit will be less than the terminal potential difference across the cell when the current in the cell is-

1. from positive terminal to negative terminal
2. from negative terminal to positive terminal
3. zero
4. infinite

Q. The current capacity of the charged secondary cell does not depend on ?

1. rate of charging
2. rate of discharging
3. temperature
4. amount of active material

Q. ________ (Dry cell/ Wet cell) is a primary cell which cannot be charged.

Q.

How does the electrolyte cell differ from electrochemical cell in the principle of flow of energy?

Q. A cell in which chemical reactions are reversible is

1. Secondary cell
2. Primary cell
3. Both (a) and (b)
4. None of these

Q.

State whether true or false :

The current obtained by the primary and the secondary cells is direct current.

1. True
2. False

Q. Primary cells are

1. Recyclable
2. Use and throw
3. Rechargable
4. Retractable

Q. Which one of the following primary cells has emf 1.08 volts and which remains fairly constant?

1. Daniel cell
2. Leclanche cell
3. Simple voltaic cell
4. Dry cell

Q. Primary cells have _____ resistance and secondary cells have ______ resistance

1. High, Low
2. Low , High
3. Low , Low
4. High , High

Q. In secondary cells:

1. Chemical changes can be reversed by heating electrodes
2. Chemical changes can be reversed by passing electric current
3. Current is produced by photo chemical reactions
4. None of these