Engineering Materials MCQs

Question 1

The material in which the atoms are arranged chaotically, is called

Accepted Answer

Amorphous material

Answer

Mesomorphous material

Answer

Crystalline material

Answer

None of these

Question 2

Tungsten when added to steel __________ the critical temperature.

Accepted Answer

Raises

Answer

Does not effect

Answer

Lowers

Answer

None of these

Question 3

Which of the following represents the allotropic forms of iron?

Accepted Answer

Alpha iron, gamma from and delta iron

Answer

Alpha iron, beta iron and gamma iron

Answer

Alpha iron and beta iron

Answer

Body centered cubic iron and face centered cubic iron

Question 4

The addition of which of the following improves machining of copper?

Accepted Answer

Sulphur

Answer

Vanadium

Answer

Tin

Answer

Zinc

Question 5

Vanadium in high speed steels

Accepted Answer

Forms very hard carbides and thus increases wear resistance

Answer

Promotes decarburisation

Answer

Provides high hot hardness

Answer

Promotes retention of austenite

Question 6

Basic solution is one which has pH value

Accepted Answer

Greater than 7

Answer

Equal to 7

Answer

Less than 7

Answer

pH value has nothing to do with basic solution

Question 7

Neutral solution is one which has pH value

Accepted Answer

Equal to 7

Answer

Greater than 7

Answer

Less than 7

Answer

pH value has nothing to do with neutral solution

Question 8

Acidic solution is one which has pH value

Accepted Answer

Less than 7

Answer

Greater than 7

Answer

Equal to 7

Answer

pH value has nothing to do with neutral solution

Question 9

The toughness of a material __________ when it is heated.

Accepted Answer

Decreases

Answer

Remain same

Answer

Increases

Answer

None of these