Systemic insecticides
Are absorbed throughout the plant
Kill insects following external bodily contact
Are stomach poisons
Emit poisonous vapour
Correct Answer :
A. Are absorbed throughout the plant
Related Questions
A bio-catalyst produced by living cells which acts independent of the cell is called a/an
Substrate
Enzyme
Nutrient
None of these
Which of the following is a detergent?
Benzene hexachloride
Alkyl benzene sulphonate
Polytetrafluoroethylene
Cellulose nitrate
__________ are added in lacquers to remove film brittleness and to improve adhereness.
Film forming materials
Plasticisers
Diluents
Solvents
Maleic anhydride is produced by catalytic oxidation of
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Ethyl alcohol
Naphthalene
Benzene
Fermentation of molasses to produce ethyl alcohol is done at __________ °C.
20 - 30
< - 5
100 - 150
250 - 300
Which of the following is not an insecticide?
Hydrocyanic acid
Nicotine
Sodium fluoride
Hexane
Main use of hydrazine is
As a rocket fuel
In water treatment
As a disinfectant
As fire retardant
Hydrogenation of oil does not
Remove double bonds
Raise its melting point
Improve its resistance to oxidation
None of these
__________ is an ore of lead.
Quartz
Galena
Siderite
Chalcopyrite
The catalyst used in the manufacture of DDT is
Alumina
Silica
20% oleum
Aluminium chloride
In the production of soda ash by Solvay process, the by-product is
CaCl2
NH4Cl
NH3
NaOH
Lubricating greases are a mixture of
Mineral oil, soap and additives
Mineral oil and metallic soap
Mineral oil and fatty oil
Fatty oil and metallic soap
10% oleum comprises of 10% free
SO2
H2SO3
SO3
H2SO4
Chrome tanning and vegetable tanning are done for
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Heavy & light leather respectively
Both light & heavy leather
Neither light nor heavy leather
Most commonly used rubber vulcanising agent is
Sulphur
Bromine
Platinum
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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)
Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.
Phthalic anhydride
Vinyl chloride
Maleic anhydride
Dacron
Salt is the basic raw material for the manufacture of
Cement
Glass
Potteries
Caustic soda
Bitterns is a/an
Unsaturated fat
Starting material for the production of iodine
By-product of chlor-alkali industry
None of these
Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces
Nylon-6
Dacron
Polyester
PVC
Bordeaux mixture is a/an
Fertiliser
Inorganic fungicide
Insecticide
Explosive
Systemic insecticides
Are absorbed throughout the plant
Kill insects following external bodily contact
Are stomach poisons
Emit poisonous vapour
Which oil is preferred for paint manufacture?
Drying oil
Non-drying oil
Semi-drying oil
Saturated oil
Dacron is a
Condensation product of Hexamethylene diamine and adipic acid
Thermosetting material
Condensation product of dimethyl terephthalate and ethylene glycol
None of these
Oleum produces fumes of
SO2
H2SO4
SO3
SO2 + H2SO4
Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
Surfactant
Builder
Optical brightening agent
Anti soil redeposition agent
Raw materials for 'Solvay Process' for manufacture of the soda ash are
Salt, limestone and coke or gas
Ammonia, salt and limestone
Ammonia limestone and coke
None of these
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Al2O3
CaO
SiO2
Fe2O3
'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of
Final rolling out of paper
Cutting of fibres
Hydration of fibres
Fibrillation of fibre
Dehydrogenation of Isopropanol produces
Propyl alcohol
Acetone
Trichloroethylene
Formaldehyde