Questions

When their is a colloid in the solution, then it will show the Brownian movement, such as dust particle in the air will show the Brownian movement.

Hence, Brownian movement arises due to the impact of the molecules of the dispersion medium with the colloidal particles. It has been postulated that the impact of the molecules of dispersion medium on the colloidal particles are unequal.

This leads to the zig-zag (random) motion of the colloidal particles.

Except 142 all are divisible by number '7'.

The PIN code system was introduced on 15 th August 1972 by Shriram Bhikaji Velankar. Currently India has six digit post code and soon it will be converted in eight digits.

Gammaxene, D.D.T. & Bleaching powder are important compounds of Chlorine.

Meteorology is a branch of science that deals with the study of the atmosphere that focuses on weather processes and forecasting.