Advanced Manufacturing Processes (3161922) MCQs

MCQs of Glass Science

Showing 21 to 30 out of 47 Questions
1 2 3 4 5
21.

Around 100 AD, the Romans in Alexandria discovered if they added manganese oxide to the glass it made the glass _________________.

(a)

yellow
(b)

red
(c)

colorless
(d)

waterproof
Answer:

Option (c)

22.

The appearance of potash-lime glass in colour is:

(a)

Black
(b)

Green to colourless
(c)

Reddish brown
(d)

White
Answer:

Option (b)

23.

How do you make glass strong?

(a)

Adding cobalt
(b)

Adding metallic copper
(c)

Heating it
(d)

Compressing it
Answer:

Option (d)

24.

The process of removal of gases from glass furnace is known as________.

(a)

pressurization
(b)

refining
(c)

vaporization
(d)

forming
Answer:

Option (b)

25.

During the removal of gases, the temperature of melt increases.

(a)

True
(b)

False
Answer:

Option (b)

26.

Which is the next step after refining in the manufacture of glass?

(a)

Blowing
(b)

Forming
(c)

Annealing
(d)

Moulding
Answer:

Option (b)

27.

Molten glass is also known as ________.

(a)

body
(b)

gob
(c)

lump
(d)

mass
Answer:

Option (b)

28.

Gob is formed in a channel-like structure called a forehearth.

(a)

True
(b)

False
Answer:

Option (a)

29.

The temperature at which a non-crystalline material transforms from a supercooled liquid to rigid glass is __________.

(a)

melting point
(b)

glass transition temperature
(c)

boiling point
(d)

crystalline temperature
Answer:

Option (b)

30.

What is the melting temperature of fused quartz?

(a)

1112oC
(b)

1328oC
(c)

1525oC
(d)

1723oC
Answer:

Option (d)

Showing 21 to 30 out of 47 Questions
1 2 3 4 5