Main constituents of cotton fiber is
Lignin
Cellulose
Starch
Gelatine
Correct Answer :
B. Cellulose
Related Questions
Brackish water which contains mostly dissolved salt, can be purified by the __________ process.
Reverse osmosis
Sand filter
Lime soda
Permutit
Builders are added in soap to act as
Cleaning power booster
Anti-redeposition agent
Corrosion inhibitor
Fabric brightener
Naphthalene is removed from coke oven gas by
Adsorbing on palladium
Absorbing in ethanolamine
Scrubbing with wash oil
Passing it through electrostatic precipitator
__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.
Phosphates
Chromates
Sulphates
Bi-carbonates
Salt is the basic raw material for the manufacture of
Cement
Glass
Potteries
Caustic soda
Ca(OH)2 is called
Quicklime
Slaked lime
Limestone
Gypsum
The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by
Electrolysis
Electrolytic reduction
Electrolytic oxidation
None of these
Pick out the wrong statement.
Fibrillation of fibre during paper manufacture is done to develop the strength in paper
Alkali consumption in digestion/cooking of bamboo is measured in terms of permanganate number
Bagasse fibre contains both lignin & cellulose
Presence of sodium sulphate in pulp makes the pulp bleachability poor
The function of gypsum addition during cement making is to
Increase the density of cement
Decrease the cement setting rate
Both (A) and (B)
Neither (A) nor (B)
The yield of tar from high temperature carbonisation of dry coal is about __________ percent.
3
12
22
0.3
All enzymes are made of
Fats
Carbohydrates
Proteins
Amino acids
Sulphuric acid is mainly used in the __________ industry.
Fertiliser
Steel
Paper
Paint
Carbon disulphide is mainly used in the production of
Viscose rayon
Corundum
Plasticiser for unsaturated polyester
Paints
The major use of butadiene is
As a plasticiser for unsaturated polyester
In the manufacture of synthetic rubber
As an anti-skinning agent in paint
None of these
Metallic soap is __________ salt of fatty acids.
Sodium
Potassium
Both sodium & potassium
Aluminium or calcium
Which of the following is not produced on commercial scale from sea water?
Bromine
Magnesium compounds
Potassium compounds
Sodium sulphate
Analgesic drugs are
Pain relievers
Antibiotics
Used in the treatment of T.B.
Used in the treatment of typhoid
Deaeration of water in its treatment is necessary, as it
Minimises its turbidity
Helps in controlling its taste and odour
Minimises its corrosiveness
None of these
L.D. converter is used in the production of
Pig iron
Steel
Copper
Zinc
CaSO4 . ½H2O is known as
Blue vitriol
Plaster of Paris
Gypsum
Zeolite
Molecular weights of polymers are in the range of
102 - 102
105 - 109
102 - 107
109 - 1011
Portland cement consists mainly of
CaO & SiO2
SiO2 & Al2O3
CaO & Al2O3
CaO & Fe2O3
The difference between saponification value and acid value is
Called ester value
Always negative
Constant for all fatty oils
None of these
Use of water having dissolved oxygen in boilers promotes
Corrosion
Sequestration
Scale formation
None of these
Nylon-66 is manufactured from
Hexamethylene diamine and adipic acid
Hexamethylene diamine and Maleic anhydride
Caprolactam
Dimethyl terephthalate and ethylene glycol
Catalyst used in the hydrogenation of oil is
Nickel
Platinum
Iron
Alumina
Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda?
Diaphragm electrolytic cell process
Mercury electrolytic cell process
Lime-soda process
None of these
Carbon tetrachloride (CCl4) is the starting raw material for the manufacture of
Trichloroethylene
Perchloroethylene
Parathion
Methanol
Phosphoric acid is prepared from
Cryolite
Chalcopyrite
Rock phosphate
None of these
In sulphate pulp manufacture, the pressure and temperature in the digestor is
10 atm., 800 °C
10 atm., 170-180°C
1 atm., 170 - 180°C
1 atm., 800°C