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Answers
Answer of 3 (a) question:- Here are 10 examples of heterogeneous mixtures:
Cereal in milk is a great example of a heterogeneous mixture. ...
Oil and water form a heterogeneous mixture.
Orange juice with pulp is a heterogeneous mixture. ...
Sandy water is a heterogeneous mixture. ...
A pepperoni pizza is a heterogeneous mixture.
Answer of 3 (b) question:- Sand and water, rice and water.
Answer of 3 (c) question:- Sugar forms its solution in water.
Answers of 4rd:-
Answer of 4 (a) question-
FILTRATION: Glass and sugar on dissolving in water and filtering, glass separates out as residue on the filter paper. Filtrate of sugar solution is heated to remove water by evaporation, sugar is collected as crystals.
Answer of 4 (b) question:-
MAGNETIC SEPARATION: With the help of a magnet, iron filings can be separated leaving behind chalk powder.
Answer of 4 (c) question:-
WINNOWING: It separates chaff (lighter) from heavier grains in two different heaps.
Answer of 4 (d) question:-
EVAPORATION: This method is used to separate the components of a homogeneous solid-liquid mixture, like salt from sea water. Sea water is collected in shallow beds and allowed to evaporate in the sun. When all the water is evaporated, salt is left behind.