Test: Plastics & Use of Materials - 1 - Mechanical Engineering MCQ

Machine tool frame should have  

Phenol formaldehyde is a/an  

The percentage of phosphorous in phosphor bronze is  

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

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:

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?

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

Quartz is a 

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:

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

Match List I with List II and select the correct answer

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

Polyamides are characterized by 

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

Polyesters can be defined as the condensation products of 

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

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.