Chemistry
Select the odd one out from the following:
(a) Salt solution, sugar solution, water and alcohol, sand and water
(b) Chalk and sand, water and petrol, iron and sulphur, salt and water
(c) Gold, iron sulphide, milk, water
Elements, Compounds & Mixtures
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Answer
(a) Sand and water
Reason — Sand and water is a heterogeneous mixture, while others are homogeneous mixture.
(b) Salt and water
Reason — Salt and water is a homogeneous mixture, others form heterogeneous mixture.
(c) Milk
Reason — Milk is a mixture, whereas, iron sulphide, gold and water are pure substances.
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