4. Answer the following questions in 60–80 words: (8 marks) a) Explain how filtration and evaporation can separate solid-liquid mixtures. b) Analyse the given scenarios and answer the questions. (i) Sonam was trying to separate small stones from raw rice. While doing so, she spilled flour into it. Suggest suitable method(s) of separation and give reasons for your suggestion. (ii) John was experimenting with muddy seawater to obtain salt. Which method(s) can he use to obtain salt from it? Justify your answer.
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Explanation:
A)-
the solid liquid mixture is separated by filtration. ex- the unfiltered tea can be separated by filtration.
the solid liquid mixture is also separated by evaporation.ex-sand an water solution can also be seperated by evaporation.
B. I) -the raw rice and small stones both are solid. so, it can separate by handpeaking.
II) -if John want salt from sea then he can use evaporation otherwise he want both water and salt then he use distillation
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