Sort the given objects as rough or smooth. Wet soap Coir Feather Stone Glass ball Paperboard Sand paper Plastic spoon - Science

Sort the given objects as rough or smooth.

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अध्याय 2: Matter and Materials - Try to Answer [पृष्ठ ९७]

अध्याय 2 Matter and Materials
Try to Answer | Q 4 | पृष्ठ ९७

Short Answer Type Question:

Why is water important for our body?

Long Answer Type Question:

‘Grouping of objects helps the shopkeeper.’ Justify the statement.

Materials which can be bent or stretched easily are called ______.

Sugar does not dissolve in water.

Choose the odd one:

Soft materials can be early compressed.

Match the substances in Column A with their applications given in Column B.

Column A (Substance)	Column B (Application)
(a) oxygen	(i) for making crackers
(b) copper	(ii) for disinfecting water
(c) sulphur	(iii) all living beings inhale during breathing
(d) iron	(iv) for making electric wires
(e) chlorine	(v) for making rails

Pick one material from the following which is completely soluble in water.

Which of the following statements is not true?