CPI Flashcards
Oxidation of SO2
to SO3 is favored by
A. low temperature and low pressure.
B. low temperature and high pressure.
C. high temperature and low pressure.
D. high temperature and high pressure.
B. low temperature and high pressure.
Gun powder, an explosive, comprises of
charcoal, sulfur and .
A. glycerin
B. saltpeter
C. nitroglycerin
D. dynamit
B. saltpeter
The starting raw material for the manufacture
of alum is .
A. alumina
B. gypsum
C. bauxite
D. ammonium bicarbonate
C. bauxite
Paper pulp produced by kraft/sulfate process
is .
A. bleached easily
B. dull white in color
C. strong & fibrous
D. dark colored
C. strong & fibrous
Claude process of gas liquefaction employs
A. merely compression of gas beyond its critical pressure.
B. Joule-Thomson expansion cooling.
C. heat exchange with colder stream.
D. adiabatic expansion against a piston or in a turbine
D. adiabatic expansion against a piston or in a turbine.
Viscose rayon is chemically .
A. cellulose nitrate
B. regenerated cellulose nitrate
C. cellulose acetate
D. regenerated cellulose acetate
D. regenerated cellulose acetate
Styrene is produced from ethyl benzene by
the process of .
A. dehydrogenation
B. oxidation
C. alkylation
D. dehydration
A. dehydrogenation
Gelatin which is a nitrogenous organic protein
is obtained by the hydrolysis of .
A. tannin
B. molasses
C. chitin
D. collagen
D. collagen
Sucrose content in the raw juice extracted
from sugar cane is about %.
B. 15 - 20
Fusel oil is a/an
A. essential oil.
B. extract from medicinal herbs.
C.mixture of higher molecular weight alcohols (a byproduct obtained during production of alcohol from
molasses).
D. none of these.
C.mixture of higher molecular weight alcohols (a byproduct obtained during production of alcohol from
molasses).
Styrene-butadiene-rubber (SBR) as
compared to natural rubber has .
A. poorer tensile strength.
B. poorer resistance to oxidation.
C.greater amount of heat build-up under
heavy loading.
D. all (a), (b) and (c)
D. all (a), (b) and (c)
Coefficient of thermal expansion of glass is
decreased by the addition of during its
manufacture.
A. CaO
B. MnO2
C. ZnO
D. FeS
C. ZnO
The catalyst used in the manufacture of DDT (from
chloral and chlorobenzene) is
A. dilute H2SO4
B. oleum
C. ultraviolet light
D. none of these
oleum
Epoxy resin
A. is a good adhesive.
B. is an elastomer.
C. cannot be used for surface coatings.
D. is a polyester.
A. is a good adhesive.
Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda?
A. High cost of mercury.
B. High specific gravity of mercury.
C. Non-availability of high purity mercury.
D. Pollution of water stream by mercury.
D. Pollution of water stream by mercury.
Esterification reaction produces
A. aerosol
B. trans fat
C. soap
D. mercaptans
C. soap
Wood charcoal is used for decoloration of sugar
because it the colored materials.
A. adsorbs
B. oxidizes
C. reduces
D. converts
A. adsorbs
Producer gas consists mainly of
A. CO, CO2, N2, H2
B. CO, H2
C. H2, CH4
D. C2H2, CO2, H
A. CO, CO2, N2, H2
Neoprene is the trade name of
A. polyurathane
B. phenol formaldehyde
C. polychloroprene
D. styrene-butadiene rubber
C. polychloroprene
Sulfur addition in soap is done to
A. improve the soap texture.
B. cure pimples & dandruff.
C. fasten lather formation.
D. increase its cleansing action.
B. cure pimples & dandruff.
Phosphate rock is a raw material for the
manufacture of
A. phosphoric acid
B. phosphorous
C. superphosphates
D. all of the above
D. all of the above
Mineral oils (e.g. petroleum oils) are preferred over
fatty oils (e.g. mustard oil, ghee, tallow, palm oil,
olive oil etc.) as a lubricant due to its
A. poor oxidation stability and high gum forming tendency.
B. greater tendency of decomposition at elevated temperature.
C. hydrolysis tendency in presence of water.
D. all of the above
B. greater tendency of decomposition at elevated temperature
Which of the following is NOT a raw material used
for the manufacture of ordinary glass?
A. Iron oxide
B. Soda ash
C. Limestone
D. Silica
A. Iron oxide
Zeolite removes both temporary as well as permanent
hardness of water by precipitating calcium and
magnesium present in water as insoluble zeolites. Used
zeolite is regenerated by flushing with the solution of
A. calcium sulphate
B. sodium chloride
C. sodium sulphate
D. magnesium chloride
B. sodium chloride
Pasteurization of milk means
A. removal of fatty and albuminous substance from it.
B.killing of organisms present in it by heating it at
controlled temperature without changing its natural
characteristics.
C.inhibiting the growth of micro-organisms without
killing them.
D. none of these.
B.killing of organisms present in it by heating it at
controlled temperature without changing its natural
characteristics.
Fusion of bauxite and produces high
alumina cement.
A. alum
B. limestone
C. coke
D. quartz
B. limestone
process is used for the manufacture
of sodium carbonate by ammonia soda process.
A. Ostwald’s
B. Bosch
C. Solvay
D. Haber’s
C. Solvay
Polycaprolactum is commercially known as
A. nylon-6
B. nylon-66
C. dacron
D. rayon
A. nylon-6
Frasch process is for
A. making oxygen
B. producing helium
C. mining sulfur
D. making nitrogen
C. mining sulfur
Pitch (a product of coal tar distillation) is always
mixed with creosote oil, when it is to be burnt in a
burner, because
A. its calorific value is very less.
B. tar neutralizes the residual acids present in pitch.
C.it reduces viscosity and imparts fluidity for its
transportation through pipelines at economic pressure
drop.
D. all of the above
C.it reduces viscosity and imparts fluidity for its
transportation through pipelines at economic
pressure drop
Which is the main reducing agent during
production of iron from iron ore in a blast furnace?
A. C
B. CO
C. CO2
D. H2
B. CO
The drug used in contraceptives is
A. sulphadizene
B. mestranol
C. methyl salicylate
D. cholecalcifero
B. mestranol
Raw materials used for producing _ _
cement does not contain iron oxide.
A. waterproof
B. slag
C. white
D. pozzolan
C. white
In the Lurgi coal gasifier
A. coking coals cannot be used.
B. low carbon conversion efficiency is achieved.
C. entrainment of solids is higher.
D. large quantity of coal can be processed
D. large quantity of coal can be processed
Neon gas is
A. flammable in nature.
B. used in color discharge tube.
C. filled in lamps having tungsten filament.
D. all (a), (b) and (c).
B. used in color discharge tube.
