The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the _____________ of the slag ?
(A) Fluidity
(B) Basicity
(C) Acidity
(D) Viscosity
The same volume of all gases is representative of their_____________________?
(A) Specific gravities
(B) Densities
(C) Gas characteristic constants
(D) Molecular weights
‘Amortization’ in respect of financial obligation of a company means the_____________________?
(A) Liquidation of financial obligations on instalment basis
(B) Commitment of financial obligation on priority
(C) Liquidation of all the obsolete equipments of the company
(D) Modernisation of the plant equipments
The surface tension of a liquid, at critical temperature is____________________?
(A) Indeterminate
(B) Zero
(C) Infinity
(D) Same as that at any other temperature
Nickel and ______________ are the alloying element added in steel to increase its toughness?
(A) Molybdenum
(B) Chromium
(C) Vanadium
(D) Silicon
Hydrogen in liquid steels is dissolved_________________?
(A) As tiny gas bubbles
(B) In the atomic form
(C) In the ionic form
(D) In the molecular form
Difference at any instant between the value of the controlled variable and the set point is called the__________________?
(A) Deviation
(B) Derivative time
(C) Error ratio
(D) Differential gap
The boiling & freezing points on a newly defined temperature scale in degree ‘D’ are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to _____________ °D ?
(A) 140
(B) 180
(C) 240
(D) 280
Limestone is added in the blast furnace (during pig iron manufacture) to______________________?
(A) Form slag by combining with impurities
(B) Supply heat by undergoing exothermic reaction with impurities
(C) Reduce the coke consumption
(D) Reduce slag viscosity