Materials Science Mock Test 7

10%

Question 1 of 10

1. It can be noted that the two substances are soluble in each other in the entire range of compositions in both liquid and solid state. This kind of system is known as ___________

Isomorphous system

Unary phase system

Binary phase system

Multiple phase system

Question 1 of 10

Question 2 of 10

2. Which of the following portion(s) of the given diagram contains liquid in it?

2, 3

2, 3, 4

2, 4

3, 4

Question 2 of 10

Question 3 of 10

3. In a copper nickel system the tensile strength increases with an increase in the percentage of nickel in the alloy.

False

True

Question 3 of 10

Question 4 of 10

4. The number of components are 2, the number of phases is 1 and degrees of freedom are 2. Then which of the following equilibrium is it?

Invariant

Univariant

Bivariant

Trivariant

Question 4 of 10

Question 5 of 10

5. Which of the following is a high temperature alloy resistant to?

Creep

Tensile elongation

Fatigue

Tensile compression

Question 5 of 10

Question 6 of 10

6. Crystals of which material begin to form at point a from the figure?

Crystals of proeutectic α

Crystals of proeutectic α and β

Crystals of proeutectic β

Crystals of eutectic (α+β)

Question 6 of 10

Question 7 of 10

7. A 34.6% Pb-Sn alloy is cooled just below the eutectic temperature (183°C). What is the fraction of proeutectic α and eutectic mixture (α+β)?

70% and 30%

36% and 64%

30% and 70%

64% and 36%

Question 7 of 10

Question 8 of 10

8. Which of the following are examples of unary phase diagrams?

Mg-Db phase diagram

Cu-Pd phase diagram

Cu-Ni phase diagram

Water phase diagram

Question 8 of 10

Question 9 of 10

9. Controlled unidirectional solidification of an alloy is a technique to increase creep resistance.

True

False

Question 9 of 10

Question 10 of 10

10. The copper-nickel system is an example of solid solution hardening.

False

True

Question 10 of 10