Plastics are____________________?

Related Mcqs:

1. _____________ moulding process cannot be used for thermoplastic plastics?

   A. Compression
   B. Extrusion
   C. Injection
   D. None of these

2. Ceramic materials are____________________?

   A. Organic in nature
   B. Stronger in compression than in tension
   C. Always amorphous in nature
   D. Always bad heat conductors

3. A material is called ‘ductile’, if it can be__________________?

   A. Drawn into wires
   B. Hammered to a thin sheet
   C. Fractured without deformation
   D. Made lustrous by heating it

4. Carbon content in plain carbon steel is ______________ percent?

   A. 0.1 to 0.15
   B. 0.35 to 0.45
   C. 0.65 to 0.80
   D. 0.85 to 1.2

5. Fatigue failure of a material results from ______________ stress?

   A. Tensile
   B. Compressive
   C. Fluctuating
   D. None of these

6. Most common stainless steel type 316, which is highly resistant to corrosion contains______________?

   A. 16-13% Cr 10-14% Ni and 2-3% Mo
   B. 20-22% Cr, and 8-10% Ni
   C. 2-4% Cr, 22% NI and 2-4% Mo
   D. None of these

7. Addition of tungsten to steel imparts___________________?

   A. Magnetic properties
   B. Cutting hardness
   C. Corrosion resistance
   D. Ductility

8. Babbitt metal is not a___________________________?

   A. Tin base alloy
   B. White metal
   C. Lead base alloy
   D. Pure metal

9. Silicone rubber is not resistant to the corrosive action of____________________?

   A. Sulphuric acid (10%)
   B. Sulphuric acid (95%)
   C. Ether
   D. Both B. and C.

10. Tempering of steel is done to make it________________?

    A. Brittle
    B. Hard
    C. Rollable
    D. Soft