Question

The sky looks clearer and brighter after the rain due to loading by rain drops. Which of the following is similar to the process mentioned above?

• A. Separtion of butter from curd.
• B. Separation of salt from sea water
• C. Sprinkling water on a dusty street before sweeping
• D. Separation of grain seeds from their stalks

Answer 1

The correct option is C Sprinkling water on a dusty street before sweeping

Water is sprinkled on a dusty street to help the dust particles settle down before sweeping. It then becomes easier for sweeping. Such a process is called loading or coagulation. It is a common experience that after rain, the sky looks clear and brighter. This is because the dust particles settle down due to loading by rain drops.