Chemistry Questions for RRB ALP & TECHNICIAN 2018
1) The natural rubber is also known as _______
a) Polyvinyl
b) Colloids
c) Ether
d) Elastomer
e) Elaster
2) Natural rubber is manufactured from _______ which is a colloidal dispersion of rubber in water.
a) Rubber latex
b) Thermo latex
c) Coal latex
d) Iron Latex
e) None of these
3) Polythene is used to make ______
a) Rubber
b) Erasers
c) Pipe insulation
d) Carry bags
e) Nonstike
4) Nylon is also known as ______
a) Polypropene
b) Polythene
c) Polyester
d) Polyplex
e) Vinyl
5) Which of the following is used in pipe insulation?
a) Bakelite
b) Poly vinyl
c) Vinyl rubber
d) Acrylic
e) None of these
6) Natural rubber becomes soft & sticky at _____ temperature.
a) Moderate
b) Medium
c) Low
d) High
e) None of these
7) _______ process consists of heating a mixture of natural rubber with sulphur at a temperature range between 373K to 415K.
a) De-centralisation
b) Centralisation
c) Neutralisation
d) Vulcanisation
e) Sterilisation
8)Nylon is used to make _____
a) Fibres
b) Ropes
c) Rubber
d) Both a and b
e) Both a and c
9) Which of the following is used to make Bullet proof glass?
a) Lexan
b) Melamene
c) Acrylic
d) Perspex
e) Bakelite
10) _________ is used to make crockery.
a) Polythene
b) Bakelite
c) Melamene
d) Lexan
e) Acrylic
Answer Key
1) d) Elastomer
2) a) Rubber latex
3) d) Carry bags
4) c) Polyester
5) b) Poly vinyl
6) d) High
7) d) Vulcanisation
8)d) Both a and b
9) a) Lexan
10) c) Melamene
