A. Ammonium hydroxide
B. Sodium carbonate
C. Sodium hydroxide
D. Ammonium carbonate
Related Mcqs:
- In the Bayer’s process, bauxite is digested under pressure using ___________________?
A. H2SO4
B. NaOH
C. NH3
D. HCl - Which of the following metals is not subjected to electrolytic refining/purification ?
A. Copper
B. Zinc
C. Tin
D. Aluminium - One of the methods of purification of leach liquor is ion exchange, which involves_________________?
A. Exchange between two liquid phases
B. Exchange between a gaseous phase and a liquid phase
C. Exchange between a liquid phase and an organic resin phase
D. Exchange between a solid phase and a gas phase - The product of a commercial direct reduction process is___________________?
A. Liquid iron
B. Solid iron
C. Sponge iron
D. Iron saturated with carbon - 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 - Batch process is preferred over continuous process, when the___________________?
A. Product yields and quality cannot be achieved in continuous process, because of long
residence time
B. Sales demand of product is not steady
C. Same equipment cannot be used for several processes of the same nature
D. All (A), B. & (C) - A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson’s ratio of the rod is___________________?
A. 0
B. 0.33
C. 0.44
D. 0.25 - Eutectoid composition of carbon steel at room temperature is___________________?
A. Cementite
B. Pearlite
C. Martensite
D. Ferrite - The phenomenon occurring during explosion of a hydrogen bomb is___________________?
A. Nuclear fission
B. Nuclear fusion
C. A combination of both nuclear fission & fusion
D. None of these - The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is___________________?
A. Full annealing
B. Bright annealing
C. Patenting
D. None of these
