Before cooking rice, first you clean the rice in water to remove dust. This process is related to:

Q. During the process of cooking rice, salt is added before adding rice to the pot of water. Which among the following can be the reason to do so ?

Q.

Sushma has to prepare biryani, before which she has to remove dust particles from the rice. Which of the following processes can be used?

Q. Name the method of separation involved in each example given below.
(a) When it rains, the raindrops attach themselves to the dust in the air. This makes the dust particles heavy and brings them down to the ground. Because of this, the air becomes clearer.
(b) A mixture of water and mustard oil which are miscible are separated.
(c) Salt is separated from its mixture in water, so that the water is not lost.
(d) Rice is separated from its husk.
(e) A cook while washing rice found that the rice grains settled to the bottom of the vessel. He then drained out the top layer of water containing lighter dust particles. The rice was then transferred to a strainer to remove the excess water.
(f) Salt is separated from sea water.
(g) Sand is separated from gravel at a construction site.

Q. How can Rice be cooked without any flames?
Related to acids ,bases or salts only.
Not related to any variety of Rice.