Question

Give reasons :

a. Silver is used in making mirrors .

b. Iron is used in constructing bridges and houses .

c. Graphite is used as an electrode in the dry cell .​

Answer 1

answer:

Explanation:

1.Because silver is shiny and is a good reflector. It reflects about 90 percent of light falling on it. That is why, it is used for making high reflecting mirrors. one surface of the mirror is silvered because it helps the light rays to reflect.

2.Iron is used in constructing bridges and houses due to its hardness and strength. Bcoz it is very strong

3.because graphite has free electrons and it is a good conductor of electricity. Answer: Graphite is a good conductor of electricity. As such, it can be used in making electrode for dry cells.

Answer 2

Answer:

a. Silver is used in constructing mirrors because it is shiny in appearance.

b.Iron is used in constructing bridges and houses because it is hard and malleable and also ductile.

c. Graphite is used as an electrode in the dry cell because it is good conductor of electricity