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51.	___________ alleviates internal stress.(a) Annealing(b) Conducting(c) Bombarding(d) InundatingI had been asked this question in semester exam.Origin of the question is Properties of Nickel-2 topic in division Nickel Alloys of Aerospace Materials & Processes
Answer» The correct choice is (a) Annealing To elaborate: The process of annealing alleviates internal stress. Annealing can be done to several alloys of NICKEL like Inconel, Monel and K Monel. Annealing of metals is done by HEATING and quenching at specific TEMPERATURES depending on the MATERIAL.

52.	K Monel sheet can be welded satisfactorily by ___________(a) oxyacetylene(b) cold-rolling(c) anomaxicity(d) cold-rolling and AnomaxicityI got this question in my homework.Query is from Applications and Advantages of Nickel in section Nickel Alloys of Aerospace Materials & Processes
Answer» RIGHT CHOICE is (a) OXYACETYLENE Best explanation: K Monel sheet can be welded satisfactorily by Oxyacetylene. There are different methods of making the FLUX REQUIRED for this. The weld that is obtained as a by-product in this reacts to heat treatment.

53.	Heating of alloys that have high nickel content should be done in __________ atmospheres.(a) sulphur free(b) low temperatures(c) sulphur rich(d) sulphur infusedI had been asked this question in my homework.My query is from Properties of Nickel-2 topic in division Nickel Alloys of Aerospace Materials & Processes
Answer» The CORRECT option is (a) sulphur free For explanation I would say: Heating of ALLOYS that typically have a high amount of NICKEL in them should be DONE in sulphur-free atmospheres. Oil fuels that have a sulphur CONTENT of not more than 0.5% can be used for heating.

54.	Monel is an alloy that consists of nickel and __________(a) brass(b) copper(c) bronze(d) titaniumThis question was addressed to me during an online interview.I want to ask this question from Nickel and its Alloys topic in section Nickel Alloys of Aerospace Materials & Processes
Answer» Correct CHOICE is (B) copper For explanation: MONEL is an alloy of nickel. It consists of nickel and copper (High amounts). It is known for having favourable RESISTANCE to corrosion and also very great working PROPERTIES. Another alloy of nickel is Dura nickel.

55.	Which one of the following is not a nickel ore?(a) Pentlandite(b) Chalcopyrite(c) Rutile(d) PyrrhotiteI had been asked this question in my homework.My query is from Nickel and its Alloys in chapter Nickel Alloys of Aerospace Materials & Processes
Answer» Right choice is (C) Rutile Best EXPLANATION: The ELEMENT nickel has several ORES. Pentlandite, chalcopyrite, and Pyrrhotite are some of the ores. Rutile is not an ore of nickel, it is an ore of the element titanium. NATURALLY, pure nickel is found in very small amounts.

56.	Inconel is an alloy that contains nickel and ___________(a) iron(b) steel(c) zinc(d) chromiumThis question was addressed to me in my homework.I'd like to ask this question from Nickel and its Alloys in division Nickel Alloys of Aerospace Materials & Processes
Answer» Right ANSWER is (d) chromium The best EXPLANATION: Inconel is a nickel alloy that contains the elements nickel and chromium. It is an alloy that has several other advantageous properties like having FAVOURABLE strength at normal as WELL as elevated temperatures.