Question

5)
energy is u
C. Write true or false:
1) Chemical energy is present in food.
2) A bottle opener is class I lever.
3) The skull protects the brain.
4) Hydro energy is used to move windmills.
5) Deficiency of vitamin C causes Beri Beri.​

Answer 1

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c

Answer 2

Explanation:

(a) Burning of wood and coal causes pollution of air.

(b) A liquid fuel used in homes is kerosene.

(c) Fuel must be heated to its ignition temperature before it starts burning.

(d) Fire produced by oil cannot be controlled by water.

Video Explanation

Solution To Question ID 462708