Chemical Process Industries

oxides of nitrogen and V2O5 on a porous carrier

Catalysts used in the manufacture of sulfuric acid by chamber and contact processes are respectively

water forms an acid mist which is difficult to absorb

In contact process, SO3 is absorbed in 97% H2SO4 and not in water because

yields acid of higher concentration than chamber process

Contact process

SO3 and 80 lb of H2SO4

20% Oleum means that in 100 lb., there are 20 lb of

CO, CO2, N2, H2

Producer gas consists mainly of

both Linde's and Claude's process

Oxygen is produced by fraction of air using

salt, limestone, ammonia and coke oven gas

Raw materials for 'Solvay Process' for manufacture of the soda ash are

ammonia recovery and size of plant

Economics of "Solvay Process" depends upon the efficiency of

CaO, SiO2, Al2O3

Cement mainly contains

calcium sulfate

Gypsum is

sodium sulfate decahydrate

Glauber's salt is

sulfates and chlorides

Permanent hardness of water is due to the presence of calcium and magnesium

hot-lime soda process

Widely used method for conditioning of boiler feed water is

as rocket fuel

Hydrazine is largely used

an explosive

Trinitro-toluene is

a mixture of glycerides of fatty acids

Oil is

a mixture of esters of polyhydric alcohols except glycerin

Wax is

lower melting point and higher reactivity to oxygen

Unsaturated oils compared to saturated oils have

hydrogenation

Rancidity of oil can be reduced by

methyl ethyl ketone

Solvent used for extraction of oil is

Nickel

Catalyst used in hydrogenation of oil is

aluminum or calcium salt of fatty acids

Metallic soap is

ZnO

Fat splitting catalyst is

less than that in a laundry soap

Free alkali in toilet soap is

they form insoluble calcium soaps which precipitate

Soap cannot be used with hard water because

boost cleaning power

Builders are added in soap to

can be readily oxidized

Bio-degradable detergents

Which of the following is a detergent?

alkyl benzene sulfonate

activated carbon

Yellow glycerin is made into white, using

steam distillation

Essential oils are usually obtained using

give elasticity and prevent cracking of the film

Plasticizers are added to paints to

drying oil

Which oil is preferred for paint manufacture?

suspend pigments and dissolve film-forming materials

Function of thinner in a paint is to

pigment

Varnish does not contain

give good glossy finish

Enamels

act as an acidifying agent

SO2 is bubbled through hot sugar-cane juice to

Kraft Process

manufacture of paper from pulp employing the Foudrinier machine.

Bosch Process

method of recovering hydrogen from water gas; carbon monoxide is reacted with steam at 500C in the presence of catalyst to form carbon monoxide and hydrogen.

Hoepener Process

recovering copper from its sulfide ores by leaching with cupric and sodium or calcium chloride solution and electrolyzing the resulting cuprous chloride liquor in cells with impure copper anodes protected by diaphragms; the electrolytic by product, cupric chloride, is returned for further leaching.

Holloway Process

copper or iron sulfides fused and blown with air to burn out the sulfur content.

Barff Process

formation a rust resistant coating on iron; base metal by oxidation with superheated steam.

Carinthian Process

process for reduction of lead ores; small charge is roasted slowly at a low temperature, the lead being collected outside the furnace by means of a heat.

Cyanidation Process

method of recovering gold and silver from their ores into a soluble from by treatment with cyanides.

Babbyry Process

rubber reclaiming process in vulcanized scraps are introduced into a mixer (Banbury) where in the presence of air it is worked under pressure and at high temperature for a very short time.

Dennis Bull Process

sulfonation and extraction process in the manufacture of phenol.

Solvay Process

soda ash manufacture.

Haber-Bosch Process

production of ammonia by direct combination of nitrogen and hydrogen at 600C and under 200-300 atmospheric pressure in the presence of catalyst.

Frasch Process

process of recovering sulfur from the buried porous cap rock of a salt dome and delivering it above ground as a product of suitable purity and condition for use.

Hall's Process

extraction of aluminum from bauxite.