Question

(1): Cream is collected at the churner when buttermilk is churned.
(2) : Lighter cream particles experience less centrifugal force than remaining denser particles.

• A. Both 1 and 2 are true and 2 is correct explanation of 1
• B. Both 1 and 2 are true and 2 is not correct explanation of 1
• C. 1 is true and 2 is false
• D. 1 is false and 2 is true

Answer 1

The correct option is A Both 1 and 2 are true and 2 is correct explanation of 1

The separation of cream from milk in this process is based on the fact that when liquids of different specific gravities revolve around the same center at the same distance with the same angular velocity, a greater centrifugal force is exerted on the heavier liquid than on the lighter one making heavier cream particles get collected at churner. So both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.