Antibiotic
Inhibits/destroys the growth of microorganisms
Is used as a pain reliever
Is an antimalarial
Is an anaesthetic
Correct Answer :
A. Inhibits/destroys the growth of microorganisms
Related Questions
Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate
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)
Addition of calcium oxide to water produces
Exothermic heat
Hissing sound
Slaked lime
All (A), (B) & (C)
Naphthols are derivates of
Methyl amine
Naphthalene
Phenol
Xylene
P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
Bakelite
Neoprene
Teflon
Nylon-66
Blue colour is imparted to glass by the addition of
FeSO4
PbO
CaO
NaOH
Penicillin is made employing __________ fermentation process.
Continuous
Aerobic batch
Anaerobic batch
None of these
The purpose of tanning in leather industry is to
Stiffen the leather
Smoothen the leather
Make it flexible
Impart water resistance
Sizing material is incorporated in paper to
Impart resistance to penetration by liquids
Increase its thickness
Increase its flexibility & opacity
Increase its brightness
Poly Tetrafluoroethylene (P.T.F.E.) is known as
Bakelite
Teflon
Celluloid
Dacron
Which is the most suitable dye for synthetic fibres?
Acid dye
Azoic dye
Pigment dye
Mordant dye
The most widely used coagulant for removing suspended impurities from water is
Bleaching powder
Chlorine
Calcium sulphate
Alum
Which glass is usually used in optical work?
Lead glass
High silica (borosilicate) glass
Photo-sensitive glass
Fibre glass
Coke oven gas consists mainly of
H2, & CH4
CO, & CO2
H2, & CO
CH4, & CO
Unsaturated oils compared to saturated oils have
Lower melting point & higher reactivity to oxygen
Higher melting point & higher reactivity to oxygen
Lower melting point & lower reactivity to oxygen
Higher melting point & lower reactivity to oxygen
The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at
SASOL (in South Africa)
Redcar (U.K.)
Los Angeles (U.S.A.)
Trombay (India)
Industrial production of chloroform requires acetone and
Phosgene
Calcium hypochlorite
Chlorine
Ammonium chloride
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
Air used in aerobic fermentation must be sterilized, otherwise the
Recovery of product will be difficult
Contamination of pure culture would result
Uniformity of product cannot be achieved
None of these
Styrene (a monomer for the production of polystyrene) is commercially produced by
Catalytic dehydrogenation of ethyl benzene
Dehydration of ethyl alcohol followed by hydrogenation
Reacting ethylene oxide with acetaldehyde
Fermentation of starch
__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.
Phosphates
Chromates
Sulphates
Bi-carbonates
Hydrogenation of oil does not
Remove double bonds
Raise its melting point
Improve its resistance to oxidation
None of these
Hydrogenation of oil/fat does not
Improve its resistance to rancid oxidation
Raise its melting point
Remove double bonds
None of these
Parathion and Malathion are
Pesticides
Plasticisers for unsaturated polyesters
Pain-relieving drugs (analgesic)
Tranquilisers
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
Nylon-66 is so named because the
Average degree of polymerisation of the polymer is 1966
Number of carbon atoms between two nitrogen atoms are 6
Number of nitrogen atoms between two carbon atoms are 6
Polymer was first synthesised in 1966
Production of alcohol by fermentation of molasses is a/an __________ process.
Anaerobic
Aerobic
Endothermic
Both (B) and (C)
Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo?
Depithing
Digestion
Bleaching
None of these
Blue vitriol is chemically
Copper sulphate
Ferrous sulphate
Copper nitrate
Aluminium sulphate
Kaolin is a/an
Refractory material
Synthetic resin
Artificial abrasive
Blue pigment
In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 2SO3), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO2 to SO3 can be increased by
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