Answer the following questions in one sentence:[1 mark each]
(1) On what factors does our choice of a material used for making any
specific object depend ?
(2) What do you mean by a material ?
(3) What is the importance of oxygen gas dissolved in water ?
(4) List five materials that float on water.
(5) What do you mean by soft materials ?
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(4) List five materials that float on water.
(5) What do you mean by soft materials ?