Question

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Answer 1

Answer:

compound

Milk;Milk of magnesia,Brine

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Answer 2

Answer:

Explanation:

1.A pure substance can be either an element or a compound. Elements are those pure substances that cannot be decomposed by ordinary chemical means such as heating, electrolysis, or reaction. Gold, silver, and oxygen are examples of elements. ... Compounds can be separated into their components only by chemical change.

2.Tyndall effect is shown by those mixtures which are colloids. This is because colloids have suspension of small particles, from 1 – 1000 nanometres in size which can scatter light falling on them, a phenomenon called as Tyndall effect.

In the above question, only b) milk and d) starch solution show Tyndall effect as they are colloids. a) salt solution and c) copper sulphate solution are solutions and therefore don’t show Tyndall effect.