# Aerospace Materials and Processes Questions and Answers – Properties of Nickel-1

This set of Aerospace Materials and Processes Multiple Choice Questions & Answers (MCQs) focuses on “Properties of Nickel-1”.

1. The approximate percentage of chromium present in Inconel is __________
a) 42%
b) 6.5%
c) 0.25%
d) 13%

Explanation: The approximate amount of chromium present in this nickel-based alloy Inconel is 13%. 0.25% is the approximate amount of manganese present in it. 6.5% is the proportion of iron present in Inconel.

2. Machining of the nickel alloy Monel can be done __________
a) with hardships
b) trapped
c) without hardship
d) impossibly

Explanation: Monel is a nickel-based alloy that has several advantageous properties. One of the properties of the nickel-based alloy is its reaction to machining. Monel can typically be machined easily.

3. The melting point of K Monel is around ___________
a) 2400-2460°C
b) 1245°F
c) 2400-2460°F
d) 1064-1890°F

Explanation: The melting point of any material is the point of temperature at which the substance changes phase or state. The melting point of K Monel is typically in between the range of 2400-2460°F.

4. Monel is used with great frequency in manufacturing aircrafts.
a) True
b) False

Explanation: The above statement is incorrect. Monel is not a material that is used frequently in the aviation industry or more specifically the manufacturing of aircrafts. It is used for other general purposes.

5. The density of Inconel is ___________
a) 22 gram per cubic centimeter
b) 8.51 gram per cubic centimeter
c) 123 gram per cubic centimeter
d) 45 gram per cubic centimeter

Explanation: The density, weight, etc. of a material are the physical properties of the material. The density of Inconel is 8.51 gram per cubic centimeter. The weight of Inconel per cubic inch is 0.13 kilograms.
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6. The approximate amount of aluminium present in K Monel is ___________
a) 26%
b) 0.15%
c) 2.75%
d) 99%

Explanation: The approximate amount of aluminium present in K Monel is 2.75%. The typical amount of carbon present in K Monel is 0.15%. The approximate amount of manganese present in K Monel is 0.85%.

7. Inconel is considered to be a non-ferrous material.
a) True
b) False

Explanation: Inconel is a nickel-based alloy and is a non-ferrous material. This is because the amount of iron content present in Inconel is generally considered to be negligible.

8. Monel is utilized in ___________
a) non-chemical applications
b) schools
c) aerospace purposes
d) industries

Explanation: Monel is a nickel-based alloy that is used for several applications. It is a material that has several advantages like being remarkably resistant to corrosion. It is used in industries across the world.

9. Inconel is a heat _____________ material.
a) conducting
b) accepting
c) resisting
d) exhausting

Explanation: Inconel is an alloy/material that is known to be typically heat-resisting. It is also defined by several other qualities like being a very good corrosion-resistant material or having a good strength level.

10. It is possible to harden K Monel through ___________
a) clod treatment
b) gold treatment
c) proof treatment
d) heat treatment

Explanation: K Monel is a metal that can be hardened through heat treatment. This is a process that involves several various steps at different temperatures and time periods that tend to be very specific.

11. The density of rolled Monel is __________
a) 19.1 gram per cubic centimeter
b) 8.9 gram per cubic centimeter
c) 32 gram per cubic centimeter
d) 8.8 gram per cubic centimeter

Explanation: The density of the nickel-copper based alloy varies depending on whether it is cast or rolled. The density of rolled Monel is 8.9 gram per cubic centimeter. The density of cast Monel is 8.8 gram per cubic centimeter.

12. K Monel is typically manufactured by adding a little __________ in Monel.
a) aluminium
b) titanium
c) copper
d) silicon

Explanation: K Monel is an alloy that consists principally of nickel, copper and aluminium. The alloy K Monel is manufactured by adding a little quantity of aluminium in the nickel copper-based alloy Monel.

13. K Monel is a ___________ material.
a) ferrous
b) non-ferrous
c) proxy-ferrous
d) anti-ferrous

Explanation: K Monel is a non-ferrous material that is nickel, copper and aluminium alloy. It is known to have several good properties like being a good resistor of corrosion and also has a property of being non-magnetic.

14. Monel consists of approximately _________ of copper.
a) 30%
b) 1.4%
c) 0.1%
d) 16%

Explanation: Monel is a nickel-copper based alloy that consists of approximately 30% of copper. It also typically consists of around 1.4% of copper. Monel also tends to consist of approximately 0.1% of silicon in it.

15. Welding on Inconel is done __________
a) with difficulty
b) easily
c) hardly
d) wretchedly

Explanation: Inconel is an alloy that can generally be welded easily or without difficulty. It is one of the advantageous properties of the nickel-chromium based alloy apart from being a good resistor of corrosion.

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