Question

d. Brass, bronze, 1ron, sleer
3. Write scientific reasons.
a. The stainless steel vessels in kitchen
have copper coating on the bottom.
b. Copper and brass vessels are cleaned
with lemon.
c. Sodium metal is kept in kerosene.
4. Answer the following.
a. What is done to prevent corrosion of
metals?
b. What are the metals that make the alloys
brass and bronze?
e. What are the adverse effects of corrosion?
d. What are uses of Noble metals?​

Answer 1

Explanation:

3.a. copper is a good conductor of heat.

b. Because lemon contains acid and

copper and brass are react with acid

c. sodium is react with air and at last it burn. so to preveby reaction it kept in kerosene.

4.a. It is painted with primer or a corresponds outer layer is coated.

b.Brass= 70% copper + 30% zinc

Bronze= 90% copper+ + 10% tin