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.Management Sciences
Category: Chemical Engineering Basics
The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong _____________________?
0
A. Base and strong acid
B. Base and weak acid
C. Acid and weak base
D. None of these
The majority charge carriers in p-type silicon are______________________?
A. Free electrons
B. Ions
C. Conduction electrons
D. Holes
Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process ?
A. Galvanising
B. Tinning
C. Sherardizing
D. None of these
Inertial forces are obtained, when the elastic forces are multiplied by ______________ number?
A. Mach
B. Froude
C. Reynolds
D. Euler
Which of the following is not a charge material for cupola ?
A. Limestone
B. Iron scrap
C. Iron ore
D. Pig iron
The starting of a car takes time in winter, because the__________________?
A. Octane number of fuel is decreased
B. Fuel supply for ignition is not sufficient
C. Vaporisation of the fuel is decreased
D. Pour point of fuel decreases
Which of the following is a commonly used manometric liquid for low pressure range ?
A. Ethyl alcohol
B. Carbon tetrachloride
C. Glycerol
D. Ethylene glycol
Which of the following is not a principal alloying element for the structural steel ?
A. Molybdenum
B. Nickel
C. Manganese
D. Chromium
Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium_______________?
A. Nitrate
B. Sulphate
C. Carbonate
D. Chloride
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