The most non-polluting and efficient lighting device is —

1. CFL
2. Fluorescent light
3. LED
4. Electric bulb

IEA is the short form of —

1. Indian Energy Association
2. Indian Eco Academy
3. International Energy Agency
4. International Eco Academy

Assertion (A) : Primary cells are use and throw types.

Reason (R) : Primary cells provide current as a result of irreversible chemical reaction.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false

Assertion (A) : The rate of flow of electrons in a direction is called electronic current in that direction.

Reason (R) : The conventional current is in a direction opposite to direction of motion of electrons.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false