Air Around Us — Science STD 6 — Question

Which of the non-living things listed below, were once part of a living thing? Butter, Leather, Soil, Wool, Electric bulb, Cooking oil, Salt, Apple, Rubber.

Name four plants whose seeds are used to extract oil.

List five materials that float on water.

Name the birds that swim in water.

What do we get by churning curd?

Classify the following light sources into natural and artificial light sources: Candle, sun, electric bulb, lantern, stars, torch, firefly, tubelight, fire.

What will happen if a child does not get enough protein and carbohydrates in his food for a long time?

Name four edibles that are used as spices.

List two objects made of plastic.

In which coloured dustbin should we throw broken plastic toys, glass and metal scrap?