A. Season cracking of brass
B. Caustic embrittlement of steel
C. Both A. & B.
D. Neither A. nor (B)
Related Mcqs:
- Factor of safety is the ratio of the ___________________ stress to the working stress?
A. Tensile
B. Compressive
C. Yield
D. Bearing - Which of the following is an example of cathodic protection of metals against corrosion ?
A. Painted steel
B. Galvanised iron
C. Case hardened steel
D. Lead lined reactor - Galvanic corrosion cannot be prevented by___________________?
A. Cathodic protection
B. Anodic protection
C. Usage of largest possible anodic area
D. Any one of these - In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just like in liquid. Which of the following is an amorphous material ?
A. Tin
B. Lead
C. Zinc
D. Glass - Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gasair mixture), rendering it the property of the most explosive gas ?
A. Hydrogen
B. Acetylene
C. Carbon monoxide
D. Ammonia - Which of the following is not a secondary air pollutant ?
A. Ozone
B. Photochemical smog
C. Sulphur dioxide
D. All A., B. & C. - Which of the following acts as a natural source of air pollution ?
A. Forest fire
B. Deforestation
C. Volcanic eruption
D. None of these - A Carnot cycle consists of the following steps ?
A. Two isothermal and two isentropic
B. Two isobaric and two isothermal
C. Two isochoric and two isobaric
D. Two isothermals and two isochoric - Which of the following is Virial equation of state ?
A. (p + a/V2)(V – b) = nRT
B. PV = nRT
C. PV = A + B/V + C/V2 + D/V3 + …
D. None of these - Which of the following is not correct for a reversible adiabatic process ?
A. TVγ-1 = constant
B. p1-γ.TY = constant
C. PVγ = constant
D. None of these
