Bicarbonates & sulphates of calcium and magnesium
Undesirable taste and odour
Bacteria
Its corrosiveness
A. Bicarbonates & sulphates of calcium and magnesium
Sodium silicate
Sodium borate
Sodium tripolyphosphate (STPP)
Caustic soda
Magnesium & potassium compounds
Common salt
Bromine
Iodine
Transparent soaps are made by cold process
Organic pigments are used as colouring materials in the soap manufacture
Both laundry as well as toilet soaps are manufactured by hot process
Colourless rosin is used in the manufacture of laundry soaps
DDT
BHC
Parathion
None of these
Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98%
The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide
Vitriol oil is nothing but technical sulphuric acid
Decomposition of sulphuric acid on heating does not start before its boiling
Al2O3
CaO
SiO2
Fe2O3
Avoid mechanical weakening of fibre
Remove lignin by way of crystallisation
Increase the cellulose content
None of these
Polystyrene
Polyisoprene
Polybutadiene
Polychlorophrene
Exothermic
Endothermic
Catalytic
Autocatalytic
Increasing the oxygen concentration
Putting more quantity of V2O5 catalyst in the converter
Removing some quantity of SO3 during intermediate stage
Maintaining low temperature & pressure in the converter
45
70
95
99.5
Naphthalene
Benzol
Ethyl alcohol
Phthalic anhydride
Sulfadiazine
Mestranol
Methyl salicylate
Penicillin
Sodium
Potassium
Both sodium & potassium
Aluminium or calcium
Hexamethylene diamine and adipic acid
Hexamethylene diamine and Maleic anhydride
Caprolactam
Dimethyl terephthalate and ethylene glycol
5
70
500
1700
Glauber's salt
Common salt
Chlorine
Graphite electrode
Electrolysis
Electrolytic reduction
Electrolytic oxidation
None of these
About 90% of nitric acid is manufactured by Ostwald's process
It is a strong mono basic acid which reacts with almost all the metals except noble metals
Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
Arc process of nitric acid manufacture is economical as compared to Ostwald's process
Bauxite
Limestone
Quartz
Manganese
Filtration
Boiling
Distillation
None of these
Anaerobic
Aerobic
Endothermic
Both (B) and (C)
1 to 5
5 to 10
15 to 20
20 to 30
Styrene
Naphthalene
Phenol
Benzoic acid
Sucrose
Glucose
Starch
Maltose
Is prone to thermal decomposition
Has high water solubility and is unstable
Is soluble in ammonium chloride and potassium chloride solution
All (A), (B) and (C)
Nylon-6
Paper
Antibiotics
Sugar
Polyamide
Thermosetting resin
Polyester
None of these
Nickel
Vanadium
Alumina
Iron
SO3
Cl2
NH3
SO2