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Right option is (b) False

Best explanation: ONE of the most desirable and widely APPRECIATED qualities of most NICKEL alloys is their RESISTANCE to CORROSION. They tend to have very good resistance to corrosion.

The correct answer is (C) 28

The EXPLANATION: The atomic number of the element nickel is 28. 23 is the atomic number of the element vanadium, whereas 40 is the atomic number of ZIRCONIUM and 13 is the atomic number of the element ALUMINIUM.

The correct option is (c) without hardship

To elaborate: 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.

Correct option is (d) COPPER-aluminium

For explanation: K Monel is a nickel ALLOY that includes three elements- nickel, copper and aluminium. It has remarkable strength and very high resistance to CORROSION. Its strength can ALSO be ELEVATED with heat treatment.

Right ANSWER is (a) 30%

The best I can explain: 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.

Correct choice is (a) True

The BEST I can EXPLAIN: Monel is an ALLOY that resembles mild steel in SEVERAL ways when it comes to working properties. For example, it is similar in cold working properties LIKE forming and bending.

Right ANSWER is (b) 2540°F

Easy explanation: The melting point of the nickel-based alloy INCONEL is approximately 2540°F. It is a heat-resisting metal. The melting point, density, WEIGHT, modulus of elasticity, ETC. are the PHYSICAL properties of the metal.

Right choice is (C) VIBRATION

The best explanation: Soft soldering of Monel should not be DONE when the material is subjected to vibration. The same applies rule applies when the material is subjected to HIGH stresses. Soft soldering is not very strong.

The correct answer is (d) Inconel and K Monel

For explanation I would say: The nickel-based alloys Inconel and K Monel are both corrosion resistant in nature. They are corrosion resistant in NORMAL ATMOSPHERIC conditions as WELL as SALTWATER. This is an advantageous property.

Correct answer is (d) HEAT treatment

The best 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.

Right choice is (B) Cold-stiffening

Easiest explanation: There are different TYPES of welding the material Monel. The three methods are Oxyacetylene, carbon-arc welding and metallic-arc welding. The method USED depends on the material that has to be MADE.

The correct answer is (B) 1800°F

The explanation: Inconel can be softened by being heated up to a temperature of 1800°F. The material then has to be heated for AROUND ten to FIFTEEN minutes and subsequently has to be quenched by any SUITABLE method.

Right choice is (C) K Monel

Best explanation: K Monel is used in components and structures that are near a compass. This is because K Monel is non-magnetic in nature. K Monel is a nickel-copper-aluminium based ALLOY. It is made by ADDING a LITTLE BIT of aluminium to Monel.

Correct option is (c) oil coolers and rivets

To ELABORATE: MONEL is a nickel-copper alloy. It is USED in making both oil coolers and rivets. Monel is used in making several other components apart from oil coolers and rivets LIKE stainers etc. to be used in INDUSTRIES.

The CORRECT answer is (c) non-MAGNETIC

Easiest EXPLANATION: The non-ferrous alloy K Monel is non-magnetic in NATURE at normal temperatures. The magnetic permeability of K Monel is 1. It is the same as that of air. This is helpful when the metal has to be located near a compass.

Correct choice is (B) Sulphurized oil

For explanation: Sulphurized oil can be used as a lubricant and should be used extensively when Monel is being SUBJECTED to machine work activities like BORING, drilling, etc. For some activities, other oils are ENOUGH.

Right choice is (c) 2.75%

For EXPLANATION I WOULD say: 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%.

Correct ANSWER is (d) industries

Best 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.

The correct option is (C) 67%

To explain I would say: The approximate amount of nickel present in MONEL is 67% in the composition. The percentage of manganese present is 1%. The percentage of carbon present in Monel is AROUND 0.15%.

The correct CHOICE is (C) resisting

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.

The correct ANSWER is (b) 8.51 gram per cubic centimeter

Best EXPLANATION: The DENSITY, weight, etc. of a MATERIAL are the PHYSICAL properties of the material. The density of Inconel is8.51 gram per cubic centimeter. The weight of Inconel per cubic inch is 0.13 kilograms.

Correct OPTION is (b) 8.9 gram PER cubic centimeter

For explanation I would say: 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.

The correct ANSWER is (a) ALUMINIUM

For 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.

The correct option is (a) True

The EXPLANATION is: NICKEL alloys can be used extensively in the transportation industry. It is used in making HEAVY trucks, railway tracks and ship manufacturing. Nickel alloys are ALSO used in jet ENGINES.

Right answer is (b) more than

For explanation I would say: Inconel weighs slightly more than corrosion-resistant STEEL. This is a disadvantage of the material. Inconel is a chromium-nickel alloy. It is non-ferrous due to its LOW IRON content and also has low CARBON content.

Right choice is (d) ductile

Easiest explanation: Nickel is an ELEMENT that is ductile in nature. It is also not a SOFT element. It is a hard material. Nickel is also a metallic element that is LUSTROUS in APPEARANCE. It is a transition element.

The correct option is (a) True

The best 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.

Correct choice is (C) Inconel

Easiest explanation: The nickel ALLOY Inconel is used in the MANUFACTURING of aircraft engine components, SPECIFICALLY the aircraft engine exhaust collectors. It is often used due to its advantageous properties like good strength.

Right option is (d) 79.5%

To elaborate: The amount of NICKEL present in the nickel-based alloy Inconel is 79.5% of the COMPOSITION. The amount of MANGANESE present is 0.25%. Silicon is also present APPROXIMATELY in the same quantity. Copper makes AROUND 0.2%

Correct CHOICE is (B) 1445°C

The best I can explain: The melting point of a material is the point of TEMPERATURE at which the element changes its phase. 1445°C is the melting point of the element nickel. 660°C is the melting point of ALUMINIUM. 1668°C is the melting point of TITANIUM.

Correct choice is (c) preserves

The BEST I can explain: INCONEL has a habit of RETAINING high AMOUNTS of strength at higher temperatures. This characteristic of the nickel-chromium alloy is useful in several APPLICATIONS like the manufacturing of engines etc.

Correct answer is (a) True

Explanation: Nickel is SUITABLE for manufacturing several instruments and components INCLUDING mobile phones and power generators. This is due to its GOOD STRENGTH at high TEMPERATURES.

Correct choice is (C) SOFT soldering

The best I can explain: Soft soldering is used frequently. It is a RELATIVELY non-complicated way of joining monel where strength is not necessary and several characteristic PROPERTIES like CONTAMINATION are not affecting it.

The CORRECT choice is (a) Forgings

The best I can explain: K MONEL is commercially accessible in several FORMS and shapes. Some of the forms in which the alloy is accessible are Forgings, strip, wire, etc. Forged MATERIAL can be used in manufacturing AIRCRAFT.

The correct ANSWER is (b) 50%

To explain: Inconel welds are corrosion resistant. They are even more corrosion resistant when compared to the ORIGINAL material. Inconel welds are CLEANED after fabrication by SUBMERGING in a 50% cold nitric ACID solution.

Right option is (b) easily

The explanation: The ALLOY Monel can be welded easily. There are several methods used in WELDING Monel. The TYPE of welding method CHOSEN depends on several FACTORS including the type of material that has to be made.

Right option is (d) 13%

The EXPLANATION is: 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.

Correct answer is (b) EASILY

The explanation is: 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.

Correct choice is (B) False

Explanation: It is not possible to harden the alloy Inconel by heat treatment. Inconel has to be SUBJECTED to COLD working to be HARDENED. It is a process involving heating and cooling at DIFFERENT temperatures.

The CORRECT option is (c) 2400-2460°F

The EXPLANATION is: 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.

The correct choice is (b) non-ferrous

Easiest 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.

The correct option is (d) TUBES and WIRES

For explanation I would say: Inconel is accessible in the markets in several forms and shapes. It is also available in tubes and wires. Inconel in tube FORM it is available in welded and cold drawn SEAMLESS form and WIRE in cold drawn.

Correct ANSWER is (b) Chromium oxide

To elaborate: Chromium oxide is formed on the surface of the nickel-chromium based alloy when it is heated above 700°F in an oxidizing ATMOSPHERE. There are DIFFERENT methods LIKE PICKLING to remove it.