Question

Answer in Short :-

1) Briefly mention which part of the symbol of battery show positive and negative

terminals.

2) State whether the bulb glows when the circuit is opened.

3) Why does a cell stop producing electricity after some time?




4) What is the direction of current in the electric circuit?

IV] Long answer:-

1) Explain with the help of diagram of the dry cell. (In detail)

2) A) Draw the symbols of circuit elements:

a) Cell b) battery

c) bulb d) switch

B) Write the difference between open circuit and closed circuit.​

Answer 1

Hey!! hope it's helpful

As metal compound released is Calcium Chloride the gas evolved here is CO2. Hence metal A should be Calcium Carbonate. Hence the reaction between Calcium Carbonate and HCl is

CaCO3 (s) + 2HCl (Aq) → CaCl2( Aq) + CO2 (g) + H2O (l)