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Metal alloys important MCQS questions and answers

 1) Which of the following metal alloys is used to make parts of aeroplane?:-

A) Duralumin

B) German silver

C) Brass

D) Stainless steel

Ans:- A) Duralumin


2) Constituents of Gun metal are:-

A) Sn - 40%, Cu - 50%, Zn - 10%

B) Sn - 50%, Cu - 30%, Zn - 20%

C) Sn - 20%, Cu - 70%, Zn - 10%

D) Sn - 10%, Cu - 88%, Zn - 2%

Ans:- D) Sn - %, Cu - 88%, Zn - 2%


3) Percentage of Tungsten present in 18-4-1 high speed steel is :-

A) 18%

B) 4%

C) 1%

D) 10%

Ans:- A) 18%


4) Brass is the alloy of:-

A) Copper and Nickel

B) Copper and Zinc

C) Copper and Tin

D) Copper and Aluminium

Ans:- B) Copper and Zinc


5) Bronze is the alloy of:-

A) Copper and Aluminium

B) Copper and Nickel

C) Copper and Iron

D) Copper and Tin

Ans:- D) Copper and Tin


6) Stainless steel is the mixture of :-

A) Iron, Chromium,Tin, Carbon

B) Iron, Chromium, Nickel, Carbon

C) Iron, Chromium, Nickel, Nitrogen

C) Iron, Chromium, Nickel, Zinc

Ans:- B) Iron, Chromium, Nickel, Carbon


7) Which of the following components of Stainless steel act as corrosion resistance?:-

A) Chromium

B) Nickel

C) Carbon

D) (A) and (B)

Ans:- D) (A) and (B)


8) Which of the following high speed steel also called super high speed steel?:-

A) Cobalt high speed steel

B) 18-4-1 high speed steel

C) Vanadium high speed steel

D) Molybdenum high speed steel

Ans:- A) Cobalt high speed steel


9) Which of the following metals makes Babbit metal?:-

A) Copper, Aluminium

B) Copper,Tin, Phosphorus

C) Copper,Tin, Antimony

D) Copper, Zinc

Ans:- C) Copper,Tin, Antimony


10) Solder is the alloy of :-

A) Tin,Zinc

B) Tin,Lead

C) Tin, Antimony

D) Tin, Copper

Ans:- B) Tin,Lead


11) Which of the following shows percentage components of the Bell metal?:-

A) Cu - 70%, Sn - 30%

B) Cu - 60%, Sn - 40%

C) Cu - 90%, Sn - 10%

D) Cu - 80%, Sn - 20%

Ans :- D) Cu - 80%, Sn - 20%


12) Nichrome which is used as electric resistance is the alloy of:-

A) Nickel and Chromium

B) Nickel and Copper

C) Nickel and Tungsten

D) Chromium and Zinc

Ans:- A) Nickel and Chromium


13) Constituents of German silver are:-

A) Zinc, Manganese, Aluminium

B) Copper, Chromium, Nickel

C) Copper, Nickel, Zinc

D) Zinc, Manganese, Tungsten

Ans:- C) Copper, Nickel, Zinc


14) Generally the colour of German silver is:-

A) White

B) Grey

C) Green

D) Black

Ans:- A) White


15) Stainless steel is used to make pots because of following reasons?:-

A) It is hard.

B) It is not corrosive.

C) It is white in colour.

D) It is cheap.

Ans:- B) It is not corrosive.


16) Type metal is the alloy of following metals?:-

A) Pb, Mg, Sb

B) Pb, Cu, Sn

C) Pb, Sb,Sn

D) Sn, Cu, Zn

Ans:- Pb, Cu, Sn


17) Which of the following metal alloys is used to make magnet?:-

A) Rolled Gold

B) Alnico

C) Magnelium

D) Brass

Ans:- B) Alnico


18) Components of Alnico alloy are:-

A) Steel - 50%, Al - 20%,Ni- 20%, Co - 10%

B) Co - 10%, Al - 20%, Ni - 40%, Mg -  30%

C) Co - 20%, Al - 40%, Ni - 40%

D) Fe - 40%, Co - 40%, Ni - 20%

Ans:- A) Steel - 50%, Al- 20%, Ni - 20%, Co -10%


19) Which of the following metal alloy is used to make cheap jewellery?:-

A) Magnelium

B) Brass

C) German silver

D) Rolled Gold

Ans:- D) Rolled Gold


20) Which metal present maximum in type metal?:-

A) Tin

B) Antimony

C) Lead

D) Carbon

Ans:- C) Lead


21) Copper is the major components of Gun metal. It's percentage on it is:-

A) 60%

B) 90%

C) 80%

D) 95%

Ans:- B) 90%


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