Components of Food — Science STD 6 — Question

Write the sources and importance of minerals.

What are the sources of protein?

Classify the following materials into soluble in water and insoluble in water: Sugar, glass, iron powder, alum, saltpetre, sulphur, washing soda, iodine, lemon salt, oil, honey, plastic.

Explain giving scientific reasons: We must use water judiciously.

Explain hinge joint with the help of an example.

The handles of ‘the tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them. Can you explain why?

From where do you get drinking water in your house and how?

List different types of roots and explain each in detail.

List different methods of movement of animals.