In a plate type heat exchanger, heat transfer plates are never made of _________________?

Related Mcqs:

1. Photographic plates are coated with_________________?

   A. Silver nitrate
   B. Silver halide
   C. Calcium silicate
   D. Metallic silver

2. Liners of a ball mill are never made of__________________?

   A. Lead
   B. Alloy steel
   C. Rubber or ceramic material
   D. Cast iron

3. ______________ is never shipped in glass carboys?

   A. Ammonia
   B. Acetic acid
   C. Phenol
   D. Formaldehyde

4. Plate and frame filter press is usually made of__________________?

   A. Mild steel
   B. Cast iron
   C. Stainless steel
   D. Galvanised iron

5. Post weld heat treatment is done by____________________?

   A. Normalising
   B. Stress relieving
   C. Tempering
   D. Solution annealing

6. Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is _____________ percent?

   A. 0.02
   B. 0.2
   C. 0.35
   D. 0.5

7. The heat treatment process to which castings and the steel balls produced by cold heading are subjected is____________________?

   A. Tempering
   B. Normalising
   C. Annealing
   D. None of these

8. The heat treatment process applied to cold formed steel parts is ____________________?

   A. Normalising
   B. Tempering
   C. Artificial ageing
   D. Solution annealing

9. Which of the following heat treatment processes is used for softening the hardened material ?

   A. Normalising
   B. Tempering
   C. Annealing
   D. None of these

10. Bronze is an alloy of copper and _________________?

    A. Lead
    B. Tin
    C. Nickel
    D. Zinc