1. How many electrons are there in ‒1 coulomb?

2. The equation of state of some gases can be expressed as Vander wal equation i.e. (P + a/v2)(V – b) = RT Where P is the pressure, V is the volume, T is the absolute temperature and a, b, R are constants. The dimensions of ‘a’ are:

3. The surface tension of a liquid is 70 dyne/cm. In MKS system its value is?

4. Light year is a unit of

5. A conductor with a positive charge

6.