Engineering Questions with Answers - Multiple Choice Questions
Applied Chemistry MCQ – Preparation, Properties and Applications of Some Compounds – 2
1 - Question
Poly carbonates are the durable materials with _________
a) Low impact resistances
b) High scratch resistance
c) Low scratch resistance
d) Low transparency
View Answer
Answer: c
Explanation: Poly carbonates are the durable materials with the high impact resistances, low scratch resistances and high transparency.
2 - Question
Poly carbonates possess glass transition temperature of __________
a) 144oC
b) 145oC
c) 146oC
d) 147oC
View Answer
Answer: d
Explanation: Poly carbonates has the transition temperature of 147oC. Poly carbonates are transparent and good electrical insulators.
3 - Question
_______ are used in the data storage.
a) Bakelite
b) TEFLON
c) Poly carbonates
d) Polyethylene
View Answer
Answer: c
Explanation: Poly carbonates are used in the data storage. They are used in the production of compact discs and bluray discs as well as DVD’s.
4 - Question
Poly carbonates are used as ________ in the high stability capacitors.
a) Accelerator
b) Inhibitor
c) Dielectric
d) Initiator
View Answer
Answer: c
Explanation: Poly carbonates are used as the dielectric in the high stability capacitors. Poly carbonates are used in the construction materials.
5 - Question
Polyurethanes are in the class of compounds __________
a) Reaction polymers
b) Chain polymers
c) Branched polymers
d) Linear polymers
View Answer
Answer: a
Explanation: Polyurethanes are in the class of compounds called reaction polymers which include in epoxies, polyesters and phenolics
6 - Question
Polyurethanes possess __________
a) No impact resistance
b) Softness
c) Hardness
d) No tear resistance
View Answer
Answer: c
Explanation: The polyurethanes possess the impact resistance, tensile strength, hardness, abrasion and tear resistance.
7 - Question
The chair, house and car are some of the applications of the __________
a) Bakelite
b) TEFLON
c) Polyurethane
d) Poly vinyl chloride
View Answer
Answer: c
Explanation: The chair, house and car are some of the applications of the polyurethane. It has many applications in the daily life also.
8 - Question
Polyurethanes are _________
a) Good conductors
b) Good insulators
c) Having no tensile strength
d) Affected by heat
View Answer
Answer: b
Explanation: Polyurethanes are having the good insulating properties. They are having tensile strength and they are resistant to environment conditions like heat, moisture, etc.
9 - Question
Polyurethanes are used for purifying the ________
a) Water
b) Alcohol
c) Acids
d) Salt solutions
View Answer
Answer: a
Explanation: Polyurethanes are used for purifying the water. They are used in refrigeration and freezers also.
10 - Question
Sun glasses, computer cases and printing substrate can be done by using _________
a) Polyurethanes
b) Poly carbonates
c) Poly vinyl cyanide
d) Polyethylene
View Answer
Answer: b
Explanation: Sun glasses, computer cases and printing substrate can be done by using poly carbonates. Theft proplastic packaging which cannot be opened by hand are also made from poly carbonates.