Chemistry
Trending Questions
Why do we need to separate substances?[3 MARKS]
What do we mean by churning? Where is it used? [2 MARKS]
What are the various factors based on which substances are separated? [1 MARK]
In villages, we can see that women separate the grains from the chaff by throwing the grains from a certain height to fall back into a vessel.What is this process? Explain.[3 MARKS]
Sonali was going to cook rice.She found husk particles in the rice.What should she do to separate those husk particles from rice before cooking rice? [1 MARK]
What are the various methods of separation of substances under dry conditions? [2 MARKS]
Rahul was going to cook rice, but he found weevils in the rice box.Which method of separation should he use to remove those weevils? [1 MARK]
Lemonade is prepared by mixing lemon juice and sugar in water.You wish to add ice to cool it.Should you add ice to the lemonade before or after dissolving sugar?In which case would it be possible to dissolve more sugar? Does water dissolve an equal amount of salt and sugar? What can be done to dissolve more salt in a saturated solution of water and salt? [5 MARKS]
Vihaan is a farmer.He grows wheat in his field. He made flour from it. What are the different methods of separation he can use to separate the grain from the husk?Explain. Also, give reasons for choosing a method. [5 MARKS]
Raj's house was under construction.During the construction, he saw a man removing pebbles and stones using a plastic mesh held in a frame.Which method of separation is used here? Explain it in detail. [3 MARKS]
