Alloy Formation

Q.

Assertion (A): Stainless steel is preferred to manufacture utensils as compared to iron.

Reason (R): Iron reacts with the components of food making it unfit for consumption.

1. Both A and R are true, but R is not the correct explanation of A.

2. A is true but R is false.

3. Both A and R are false.

4. Both A and R are true, and R is not the correct explanation of A.

Q. Which of the following alloy is used in aircraft?

1. Duralumin
2. Sterling silver
3. Gunmetal
4. German silver

Q. Steel is an alloy of iron and carbon.

1. True
2. False

Q.

The alloy of which of the following metals, is usually used for making bells?

1. Copper (Cu)

2. Iron (Fe)

3. Lead (Pb)

4. Aluminium (Al)

Q.

Which of the following alloy contains mercury as base metal?

1. German silver

2. Magnalium

3. Amalgam

4. Alnico

Q. Which of the following alloy has the least percentage of iron?

1. Pig Iron

2. Steel

3. Mild Steel

4. Wrought Iron

Q.

The metals tin and zinc are present in the alloy

1. duralumin

2. Solder

3. bronze

4. brass

Q. Identify the alloys:

1. Brass
2. Bronze
3. Steel
4. Nichrome
5. Vintallium
6. Arsenic
7. Gallium
8. Tellurium

Q. Silver amalgam is an alloy of with silver.

1. mercury
2. carbon
3. gold

Q. gold is the purest form of gold.

1. 22 Carat
2. 24 Carat
3. 26 Carat
4. 23 Carat