In a good rimming steel_________________________?
(A) Carbon and silicon should be low
(B) Silicon should be low but carbon should be high
(C) Both silicon & carbon should be high
(D) Silicon should be high but carbon should be low
Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that_________________?
(A) Pure oxygen has been used for combustion
(B) Nitrogen percentage in the fuel is very high
(C) Excess air has been used for combustion
(D) Hydrogen is not present in the fuel
_________________ furnace is generally used in the non-ferrous foundries ?
(A) Direct arc
(B) Indirect arc
(C) Resistance
(D) Induction
The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their__________________?
(A) Equivalent weight
(B) (Equivalent weight)2
(C) Molecular weight
(D) (Molecular weight)2
Most of the phosphorous present in the blast furnace burden enters into___________________?
(A) Hot metal
(B) Flue gases
(C) Slag
(D) Refractory lining
Density in the solid state is slightly less than that in its liquid state, in case of____________________?
(A) Carbon dioxide
(B) Water
(C) Mercury
(D) None of these
Earing is a defect found in steels after the following metal working operation ?
(A) Extrusion
(B) Rolling
(C) Deep drawing
(D) Wire drawing
Routing in production, planning & control is concerned with the___________________?
(A) Sequence of operation to be performed
(B) Progress of work performed
(C) Authorisation of work to be performed
(D) Balancing of load on machines
Steel & cast iron pipes are produced by ______________ casting ?
(A) Slush
(B) Die
(C) Investment
(D) True centrifugal
Magnesium is present in___________________?
(A) Haemoglobin
(B) Chlorophyll
(C) Hypo solution
(D) None of these