Explore topic-wise MCQs in Casting.

This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the amount of sea coal needed in cast irons for large green casting moulding sands?

A. 10%
B. 15%
C. 20%
D. 25%
Answer» B. 15%
Discussion
2.

WHICH_OF_THE_FOLLOWING_INCREASES_DRY_STRENGTH_OF_THE_SAND??$

A. Iron oxides
B. Fuel oils
C. Cereals
D. Dextrin and molasses
Answer» E.
Discussion
3.

How much should fuel oil be added to increase the moulding ability of sand?$

A. 0.01% – 0.1%
B. 0.02% – 0.2%
C. 0.03% – 0.3%
D. 0.04% – 0.4%
Answer» B. 0.02% ‚Äö√Ñ√∂‚àö√ë‚àö¬® 0.2%
Discussion
4.

Cereals improve flowability and lowers collapsibility.$

A. True
B. False
Answer» C.
Discussion
5.

Pitch maybe used up to what percent?

A. 1%
B. 2%
C. 3%
D. 4%
Answer» C. 3%
Discussion
6.

At what temperature is pitch distilled from soft coals?

A. 400°F
B. 500°F
C. 600°F
D. 700°F
Answer» D. 700¬¨¬®‚Äö√†√ªF
Discussion
7.

What is the amount of sea coal needed in cast irons for small casting moulding sands?

A. 1%
B. 2%
C. 3%
D. 4%
Answer» B. 2%
Discussion
8.

For bonding action of clays, what is the amount of water needed?

A. 1.5%-8%
B. 3.5%-11%
C. 4.5%-12%
D. 5.5%-13%
Answer» B. 3.5%-11%
Discussion
9.

What does the clay particle absorb in electrostatic bonding theory?

A. Complete water
B. H<sup>+</sup> ions
C. OH<sup>–</sup>ions
D. Sand grains
Answer» D. Sand grains
Discussion
10.

In which of the following bonding theory, water molecules break down to form H+ and OH- ions?

A. Electrostatic bonding theory
B. Hot strength theory
C. Surface tension theory
D. Block and wedge theory
Answer» B. Hot strength theory
Discussion
11.

Which of the following is not a bonding theory?

A. Electrostatic bonding theory
B. Hot strength theory
C. Surface tension theory
D. Block and wedge theory
Answer» C. Surface tension theory
Discussion