Materials Science Mock Test 9

10%

Question 1 of 10

1. In malleable cast iron, the graphite turns into spheroidal particles.

False

True

Question 1 of 10

Question 2 of 10

2. Cast iron tends to be brittle.

False

True

Question 2 of 10

Question 3 of 10

3. Milling uses rotatory cutters.

False

True

Question 3 of 10

Question 4 of 10

4. Which of the following is true?

Fine pearlite is softer than coarse pearlite

Fine pearlite is harder than coarse pearlite

Fine pearlite is more ductile than coarse pearlite

Toughness of steel decreases with increase in carbon percentage

Question 4 of 10

Question 5 of 10

5. In which of the following steels there is a chance of quenching cracks being formed?

0.2% carbon

0.6% carbon

0.4% carbon

0.5% carbon

Question 5 of 10

Question 6 of 10

6. Which of the following metal highly prone to corrosion?

Zinc

Iron

Aluminum

Copper

Question 6 of 10

Question 7 of 10

7. What are alloys with two components called?

Ternary alloy

Binary alloy

There is no name given to an alloy with two components

Quaternary alloy

Question 7 of 10

Question 8 of 10

8. Which of the metal if present will make the alloy ferrous?

Zinc

Iron

Lead

Aluminium

Question 8 of 10

Question 9 of 10

9. In process annealing, heating is limited to avoid excessive oxidation.

True

False

Question 9 of 10

Question 10 of 10

10. Which is the correct order of temperature arranged in ascending order of the following processes?

i. Partial annealing	
ii. Full annealing	
iii. Subcritical annealing

ii, iii, i

iii, i, ii

iii, ii, i

i, iii, ii

Question 10 of 10