Natural water contains approximately ______________ percent of heavy water?
(A) 0.015
(B) 0.71
(C) 1.2
(D) 3.5
L.D. (Linz-Donawitz) converter is used in the production of____________________?
(A) Copper
(B) Steel
(C) Zinc
(D) Aluminium
Which of the following contributes maximum as main source of sulphur in the blast furnace charge ?
(A) Sinter
(B) Coke
(C) Iron ore
(D) Limestone
Constituents of stellite are ____________________?
(A) Zinc, copper & nickel
(B) Cobalt, chromium & tungsten
(C) Zinc, aluminium & nickel
(D) Nickel, cobalt & vanadium
Which of the following pairs is not correctly matched ?
(A) Uranium – 233 : Fertile material
(B) Binding energy : Mass defect
(C) Scattering: Absorption cross-section
(D) Number of nucleons : Mass number
When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the _________________?
(A) Partial pressure of water vapour is less than the total pressure
(B) Humidity is < 100% & dew point temperature of air has not reached
(C) Dew point temperature of air has not reached & air is not saturated fully
(D) Air is fully saturated
Specific gravity of hot metal (pig iron) is ______________ times that of the blast furnace slag ?
(A) 2
(B) 3
(C) 0.8
(D) 6
What happens, when SO2 is passed through a solution of H2S in water ?
(A) Precipitation of sulphur takes place
(B) H2SO3 is formed
(C) Oleum is formed
(D) None of these
Pick out the wrong statement?
(A) Complete unity of command exists in a line organisation
(B) Line organisation is net suitable for expansion and growth of an industry
(C) In line and staff organisation, “line” executes and “staff directs
(D) None of these
Identify the false statement?
(A) Martensitic steels are less susceptible to pitting corrosion than austenitic steels
(B) Pitting corrosion is usually very localised
(C) Hydrogen embrittlement is facilitated by tensile stress
(D) Stress corrosion cracking is facilitated by tensile stress