In primitive days, __________ was being manufactured by Leblanc Process.
Alum
Washing soda
Soda ash
Calcium carbide
Correct Answer :
C. Soda ash
Related Questions
Average sulphur content in Indian pyrites is about __________ percent.
15
35
55
70
The major constituent of black liquor generated during paper manufacture is sodium
Sulphate
Carbonate
Hydroxide
Bi-carbonate
__________ acid is an unsaturated fatty acid.
Palmitic
Oleic
Stearic
Oxalic
Which of the following is a constituent of coffee?
Caffeine
Nicotine
Calgon
Lignin
Ordinary glass is not a/an
Amorphous isotropic material
Supercooled liquid
Material with sharp definite melting point
Electrical insulator
Pick out the wrong statement.
Azoic dyes are mostly applied on cotton fabrics
Basic dyes (e.g. amino derivatives) are applied mostly to paper
Mordant dyes are applied mainly to wools
None of these
Blue vitriol is chemically
Copper sulphate
Ferrous sulphate
Copper nitrate
Aluminium sulphate
Sulphur removal by heating of pyrite ore in presence of air is called its
Reduction
Roasting
Calcination
Smelting
Which of the following is not an insecticide?
Hydrocyanic acid
Nicotine
Sodium fluoride
Hexane
Economics of 'Solvay Process' depends upon the efficiency of
Carbonating tower
Ammonia recovery
Ammonia recovery and size of the plant
Ammoniation of salt solution
Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?
Sodium silicate
Sodium borate
Sodium tripolyphosphate (STPP)
Caustic soda
In an integrated steel plant, NH3 present in coke oven gas is normally recovered as
(NH4)2SO4
NH4Cl
(NH4)2 NO3
Liquid NH3
Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces
Nylon-6
Dacron
Polyester
PVC
Celluloid is chemically
Cellulose acetate
Regenerated cellulose
Cellulose nitrate
Cellulose acetate butyrate
The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to
Avoid mechanical weakening of fibre
Remove lignin by way of crystallisation
Increase the cellulose content
None of these
The product obtained on mixing calcium oxide with water is called
Quicklime
Slaked lime
Milk of lime
None of these
A mixture of chlorine & sodium bromide acts as a/an
Insecticides
Analgesic drug
Fire retardant
Hydrogenation catalyst
Synthetic glycerine is produced from
Toluene
Phenol
Propylene
Naphthalene
Presence of sodium tripolyphosphate (an additive) in synthetic detergent
Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions)
Inhibits its corrosive effects
Does not allow redeposition of dirt on the cleaned surface
None of these
Oxygen is produced by fractionation of air using __________ process.
Linde's
Claude's
Either (A) or (B)
None of these
Function of thinner in a paint is to
Accelerate the oxidation of oil
Prevent gelling of the paint
Suspend pigments & dissolve film forming materials
Form a protective film
Widely used method for the conditioning of boiler feed water is the
Cold lime process
Coagulation
Hot-lime soda process
Sequestration
Vanillin is a type of
Anti-pyretic drug
Food preservative
Flavour
Dye
Chemical formula of oleum is
H2SO3
H2SO4
H2S2O7
H2SO7
Teflon is
Phenol formaldehyde
An inorganic polymer
Poly tetra-fluoro-ethylene (P.T.F.E.)
A monomer
Na2CO3 is called
Washing soda
Soda ash
Plaster of Paris
Calcite
Which of the following is used as a binding material in soap to improve soap texture?
Rosin
Borax
Benzyl acetate
Sodium carbonate
Pick out the wrong statement.
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
Neoprene is chemically known as
Polybutadiene
Styrene butadiene rubber (SBR)
Polyurethane
Polychlorophrene
Production of alcohol by fermentation of molasses is a/an __________ process.
Anaerobic
Aerobic
Endothermic
Both (B) and (C)