Question

please do this it's urgent​

Answer 1

Answer:

the answer is option (A) sugar

Answer 2

Answer:

The rate of sedimatation can be improved by adding Alum.

Explanation:

Answer. Alum increases the rate of sedimentation because,alum being an external agent causes the particles present in the container to colloid together and form heavier particles, as heavier particles sink in water these particles settle down therefore,increasing the speed of sedimentation.