The order of `(2)^(30)` is approximately :

The time of completion of 90% of a first order reaction is approximately

Compare the mass of the sun with that of the Jupiter, if the mass of the Sun is approximately 2xx10^(30) kg and mass of the Jupiter is approximately 2xx10^(27) kg.

Arrange the protons shown in the decreasing order of their approximate bond energies.

The semi vertical angle of a cone is 45^@ . The height of the cone is 30.05 cm. The approximately its volume is