State True or False.
Rain water does not leave behind concentric rings when boiled.

True

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False

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Solution

The correct option is A True
The concentric rings formed in tap water because of dissolved solids such as salts, minerals, and other impurities which remain dissolved in tap water but these impurities are absent in rainwater so it does not form concentric rings.

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Explain why:

(a) Boiled or distilled water taste flat.

(b) Ice at $0^{\circ} C .$ has the greater cooling effect than water at $0^{\circ} C .$

(d) Rainwater does not leave behind concentric rings when boiled.

(e) Air dissolved in water contains a higher proportion of oxygen.

(f) If distilled water is kept in a sealed bottle for a long time, it leaves etchings on the surface of the glass.

State True or False.

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State whether the statement given below is True or False.

Sugar does not dissolve in water.

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