Materials and Construction

431. Which of the following has a very high carbide forming tendency in steels?

1. Silicon
2. Chromium
3. Nickel
4. Vanadium

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432. Which of the following has no effect on the carbide forming tendency in steels?

1. Molybdenum
2. Phosphorus
3. Chromium
4. Vanadium

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433. Which of the following has the highest compressive strength?

1. Wrought iron
2. Cast iron
3. Mild steel
4. High carbon steel

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434. Which of the following has the highest density and the lowest melting point?

1. Stainless steel
2. Titanium
3. Lead
4. Aluminium

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435. Which of the following has the least carbon percentage?

1. Low carbon steel
2. Mild steel
3. Wrought iron
4. White cast iron

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436. Which of the following has the least value of ultimate tensile strength (UTS)?

1. Medium carbon steel
2. High carbon steel
3. Cast iron
4. Wrought iron

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437. Which of the following has the poorest weldability?

1. Low carbon steel
2. Mild steel
3. Wrought iron
4. High-carbon steel

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438. Which of the following heat treatment processes is used for softening the hardened material?

1. Normalising
2. Tempering
3. Annealing
4. None of these

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439. Which of the following is a light alloy?

1. Monel metal
2. Dow metal
3. German silver
4. Babbitt metal

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440. Which of the following is a low melting point metal?

1. Stainless steel
2. Wrought iron
3. Tin
4. Copper

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