Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is ______________ °C?
A. 25
B. 60-70
C. 150-200
D. 250-300
Chemical Process
Function of sodium thiosulphate (hypo) in development of photographic film/plate is to______________?
Function of sodium thiosulphate (hypo) in development of photographic film/plate is to______________?
A. Brighten the faint images
B. Remove metallic silver
C. Convert silver chloride to silver
D. Remove unexposed silver halide
Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and___________________?
Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and___________________?
A. Sulphuric acid
B. Phosphoric acid
C. Hydrochloric acid
D. Hydrofluoric acid
Neoprene is chemically known as___________________?
Neoprene is chemically known as___________________?
A. Polybutadiene
B. Styrene butadiene rubber (SBR)
C. Polyurethane
D. Polychlorophrene
Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of_________________?
Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of_________________?
A. Carbon
B. Arsenic
C. Lead
D. Sulphur
Fermentator temperature during production of alcohol from molasses is around ______________ °C?
Fermentator temperature during production of alcohol from molasses is around ______________ °C?
A. 5
B. 30
C. 130
D. 300
Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda ?
Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda ?
A. Diaphragm electrolytic cell process
B. Mercury electrolytic cell process
C. Lime-soda process
D. None of these
Raw materials used for producing ________________ cement does not contain iron oxide?
Raw materials used for producing ________________ cement does not contain iron oxide?
A. Waterproof
B. Slag
C. White
D. Pozzolan
Cooking liquor in case of sulphite process is _____________________?
Cooking liquor in case of sulphite process is _____________________?
A. Sodium sulphite and sodium bisulphite
B. Magnesium sulphite and free SO2 in acid medium
C. Magnesium sulphate and magnesium bicarbonate
D. None of these
Salt cake is chemically represented by_________________?
Salt cake is chemically represented by_________________?
A. Na2SO4
B. CaSO4. ½H2O
C. MgSO4
D. BaSO4