Synthetic Materials

Question 6 :

Which of the following is used for removing air bubbles from glass during its manufacture?

A). Arsenous oxide
B). Potassium carbonate
C). Soda ash
D). Feldspar
Answer : Option A

Question 7 :

Which of the following is a protein?

A). Natural rubber
B). Starch
C). Cellulose
D). None of these
Answer : Option A

Question 8 :

Wood is the main raw material for the manufacture of

A). paint
B). paper
C). ink
D). gun powder
Answer : Option B

Question 9 :

Rayon is chemically

A). cellulose
B). pectin
C). glucose
D). amylase
Answer : Option A

Question 10 :

Optic fibres are mainly used for which of the following?

A). Musical instruments
B). Food industry
C). Weaving
D). Communication
Answer : Option D