Plastics And Use Of Materials - MCQ Test 1


20 Questions MCQ Test Mock Test Series - Mechanical Engineering (ME) for GATE 2020 | Plastics And Use Of Materials - MCQ Test 1


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This mock test of Plastics And Use Of Materials - MCQ Test 1 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 20 Multiple Choice Questions for Mechanical Engineering Plastics And Use Of Materials - MCQ Test 1 (mcq) to study with solutions a complete question bank. The solved questions answers in this Plastics And Use Of Materials - MCQ Test 1 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Plastics And Use Of Materials - MCQ Test 1 exercise for a better result in the exam. You can find other Plastics And Use Of Materials - MCQ Test 1 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
QUESTION: 1

Structure of a polymer is:  

Solution:

Ans. (a) Polymers:
• Commercially called plastics; noted for their low density, flexibility and use as
insulators.
• Mostly are of organic compounds i.e. based on carbon, oxygen and other nonmetallic elements.
• Consists large molecular structures bonded by covalent and van der Waals forces.
• That is why structure of polymer is long chain.

QUESTION: 2

Cartridge brass can be  

Solution:

Ans. (d)

QUESTION: 3

Teflon is a  

Solution:

Ans. (b) Remember it.
Thermoplast: Thermoplast have the property of increasing plasticity that is increasing ability to deform plastically with increasing temperature.
Thermosets: It has a three dimensional network of primary bonds. They are relatively hard and rigid at room temperature and do not soften on heating.

QUESTION: 4

Machine tool frame should have  

Solution:

Ans. (a)

QUESTION: 5

Phenol formaldehyde is a/an  

Solution:

Ans. (b)

QUESTION: 6

The percentage of phosphorous in phosphor bronze is  

Solution:

Ans. (a)

QUESTION: 7

Match List-I with List-II and select the correct answer using the codes given below the Lists:  
List-I                                              List-II
A. Neoprene                         1. Electric switches
B. Bakelite                            2. Adhesive
C. Foamed polyurethane     3. Thermal insulator
D. Araldite                            4. Oil seal
Code: A B C D              A B C D
      a) 4 1 2 3           (b) 1 4 2 3
      c) 4 1 3 2            (d) 1 4 3 2

Solution:

Ans. (c)

QUESTION: 8

Which of the following are fabricated using engineering plastics? 
1. Surface plate
2. Gears
3. Guide ways for machine tools
4. Foundry patterns
Select the correct answer using the codes given below:

Solution:

Ans. (c)

QUESTION: 9

Consider the following pairs of plastics and their distinct characteristics:
1. Acrylics .............. Very good transparency to light
2. Polycarbonate….. Poor impact resistance
3. PTFE ... ………….Low coefficient of friction.
4. Polypropylene…. .Excellent fatigue strength
Which of these pairs are correctly matched?

Solution:

Ans. (c) PTFE is used for high temperature applications. Polycarbon has good impact
resistance.

QUESTION: 10

Duralumin Alloy contains aluminium and copper in the ratio of  
%Al         %Cu

Solution:

Ans. (a) Duralumin alloy contains aluminium and copper in the ratio of 94% aluminium and 4% copper.

QUESTION: 11

Quartz is a 

Solution:

Ans. (c) Quartz is a piezoelectric material.

QUESTION: 12

Consider the following statements:Thermosetting plastics are
1. Formed by addition polymerisation.
2. Formed by condensation polymerisation.
3. Softened on heating and hardened on cooling for any number of times
4. Moulded by heating and cooling.
Select the correct answer using the codes given below:

Solution:

Ans. (b)

QUESTION: 13

The correct composition of austenitic stainless steel used for domestic utensils is       

Solution:

Ans. (a) 18/8 austenitic stainless steel

QUESTION: 14

Match List I with List II and select the correct answer


Solution:

Ans. (c)

QUESTION: 15

Match List I with List II and select the correct answer using the code given below the Lists: 


Solution:

Ans. (c)

QUESTION: 16

Polyamides are characterized by 

Solution:

Ans. (d)

QUESTION: 17

Match List-I (Composition) with List-II (Application) and select the correct answer using the code given below the Lists:  


Solution:

Ans. (b)

QUESTION: 18

Polyesters can be defined as the condensation products of 

Solution:

Ans. (a) Polyester resins are quite common. The process often begins with molecules like a dialcohol, and diacid. These then cure into a solid polymer.


QUESTION: 19

The structure of a polymer is shown in the given figure. This polymer
Finds special application in  

Solution:

Ans. (c)

QUESTION: 20

Assertion (A) In Addition Polymerization method, polymer is produced by addinga second monomer to the first, then a third monomer to this dimmer and so on.Reason (R): There must exist at least one double bond in the monomer forAddition Polymerization reaction.  

Solution:

Ans. (a)