Search
.Management Sciences
Category: Chemical Process
Phenolic antiseptics are added in the __________________ soap?
A. Shaving
B. Medicated
C. Metallic
D. Transparent
Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate ?
A. Is prone to thermal decomposition
B. Has high water solubility and is unstable
C. Is soluble in ammonium chloride and potassium chloride solution
D. All A , B. and C.
Black liquor is converted into white liquor by __________________________?
A. Evaporation and burning the concentrate followed by causticisation of products
B. Multi-effect evaporation only
C. Selective liquid extraction
D. Extractive distillation
Thorium is mainly used _______________?
A. For the manufacture of gas mantles
B. As a fissile fuel in a nuclear reactor
C. In the manufacture of hydrogen bomb
D. In the treatment of cancer
Dense soda ash used in the manufacture of glass, is chemically represented by__________________?
A. Na2CO3
B. Na2CO3.10H2O
C. Na2CO3.H2O
D. Na2HCO3
Solvay process is used for the manufacture of____________________?
A. Caustic soda
B. Soda ash
C. Caustic potash
D. Soda lime
Industrial production of chloroform requires acetone and_____________________?
A. Phosgene
B. Calcium hypochlorite
C. Chlorine
D. Ammonium chloride
Absorption of SO3 in 97% H2SO4 is_______________?
A. Exothermic
B. Endothermic
C. Not possible
D. None of these
Which glass is usually used in optical work ?
A. Lead glass
B. High silica (borosilicate) glass
C. Photo-sensitive glass
D. Fibre glass
Recent Comments