Application

Q.

Food cans are coated with tin and not with zinc because

1. (a) Zinc is costlier than tin.

2. (b) Zinc has a higher melting point than tin.

3. (c) Zinc is more reactive than tin.

4. (d) Zinc is less reactive than tin.

Q.

In galvanization, iron is coated with a layer of__________

Q.

Which among the following metals is employed to provide cathodic protection to iron?

1. Nickel

2. Zinc

3. Tin

4. Lead

Q.

Name the components of

b. Solder

Q.

Food can are coated with Tin and not with Zinc because

1. Zinc is costlier than Tin

2. Zinc has a higher melting point than Tin

3. Tin is less reactive than Zinc and a nontoxic metal

4. Zinc is less reactive than Tin

Q. Assertion [A]: Zinc is used in galvanisation of iron.
Reason [R]: Galvanisation increases the life of iron articles by protecting them from rusting.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Q. Which metals given below can be used for making bronze?

1. Copper
2. Tin
3. Silver
4. Both (a) and (b)

Q. Which one of the following is applied on wounds as an antiseptic?

1. Metals
2. Non-metals
3. Metalloids
4. Metal oxides

Q.

Which of the following element is alloyed with magnesium metal for various commercial purposes?

1. Aluminium

2. Copper

3. Nickel

4. Iron

Q. Identify the substance used as a moderator in nuclear reactors.

1. Cadmium
2. Diamond
3. Dolomite
4. Graphite

Q. Food cans are coated with tin and not with zinc because:

1. Zinc is more reactive than tin.
2. Zinc is costlier than tin.
3. Zinc has a higher melting point than tin.
4. Zinc is less reactive than tin.