CPI Flashcards
Oxidation of SO2 to SO3 is favored by
low temperature and high pressure
The catalyst for the oxidation of SO2 to SO3
Vanadium pentoxide (V2O5)
Components of a gunpowder
Sulfur (oxidizing agent)
Charcoal (fuel)
Salpeter (KNO3) (source of oxygen that will initiate the reaction)
Starting raw material of alum
Bauxite
Bauxite — Alumina — Aluminum sulfate — Alum
Used in food industry as leavening agent
Ammonium bicarbonate
Paper pulp produced by the Kraft/Sulfur process is
Strong and Fibrous
Claude’s process of gas liquefaction
adiabatic expansion against turbine
CORRECT: Joule-Thomson Expansion Cooling
1. Compression
2. Cooling
3. Expansion
Viscose Rayon
regenerated cellulose acetate
Styrene is formed from ethyl benzene through the process of
Dehydrogenation
Production of gelatin
Hydrolysis of collagen
Sucrose content of raw juice from sugar cane
15-20%
Fusel Oil
A mixture of high molecular weight of alcohols
Fusel is a German word that means bad liquor
SBR has _ compared to natural rubber
poorer tensile strength
poorer resistance to oxidation
greater amount of heat build-up under heavy loading
ALL OF THE ABOVE
Added to decrease the coefficient of thermal expansion of glass
Zinc oxide (ZnO)
Catalyst in measuring DDT
Oleum
Salt cake is chemically represented by
Na2SO4
Sweetest sugar
Fructose
Producer gas is composed of
CO, CO2, N2, H2
Wood charcoal is used in the de-coloration of sugar because it ___ the colored material
Adsorbs
Esterification produces _____
Soap
Phenol is mainly used
to produce phenol formaldehyde
All gasification reaction are
a. exothermic
b. endothermic
Endothermic
In sulphate pulp manufacture, pressure and temperature of digestor
10 atm
170-180 °C
Polycaprolactum
Nylon-6
Mining sulfur
Frasch method
Production if Na2CO3 by ammonia soda process
Solvay
Main reducing agent during iron production from iron ore in furnace
CO
Oil preferred for paint manufacturing
Drying oil
Ethylene oxide is produced by oxidation of ethylene in the presence of AgO catalyst at
5 atm
275°C
Glycerine is used in
a. Manufacturing explosive
b. Conditioning tobacco
c. Pharmaceuticals
d. All
e. None
All
Starting material in production of phenol and acetone
Cumene
High refractive index used in optical instruments
flint glass
Free alkali in a toilet soap is ___ that in laundry soap
a. less than
b. more than
less than
Concentration of H2O2 is done by
vacuum crystallization
Catalyst in fat spitting
Zinc Oxide
True or false. The decomposition of H2SO4 on heating does not start before boiling
False
Leblanc is the primitive process for producing
soda ash
Paper grade bamboo contained ____ cellulose
5℅
Chloral is used to manufacture
a. DDT
b. BHC
c. Parathion
DDT
Pyrex has low or high coefficient of expansion
LOW thus sudden temperature fluctuation does not affect pyrex glass
H2SO4 having SG of 1.2 at room temperature is used for
car battery solution
Catalyst in production if elemental sulfur
alumina
Catalyst in shift conversion
Nickel
True or false. All vegetablle oils except coconut oil have fatty acids having more than 16 carbon atoms
True
Coconut oil contains 8-12 C, a medium chain fatty acid
DDT should not be allowed to come into contact with iron
to prevent its decomposition
DDT
Dichloro-diphenyl-trichloroethane
Metallic soap can be used as a
lubricant
Solvent extracted oil
none of these
True or false. Saponification number of an oil or fat is inversely proportional to its molecular weight
True
Kaolin is a
refractory material
Hydrogenation of vegetable oil
Exothermic
Nickel catalyst
Main constituent of dolomite
MgCO3
Shift conversion
CO to CO2 by steam and presence of catalyst
Refractory bricks with high thermal conductivity is desirable when used in a
recuperator
Portland cement is mainly composed of
CaO and SiO2
℅ of benzene in benzol
70
True or false. Siderite is a pyride ore
False
Mannheim furnace is used to manufacture
HCl
Thermosetting materials
are cross-linked molecules
True or false. Iodine value of oil is independent of the type of oil, where it is drying or non-drying
False
Nickel is a catalyst in all the processes except
a. Fischer Tropsch
b. Shift conversion
c. Oil hydrogenation
d. Ostwald’s process
Ostwald’s process of HNO3 production
Purest form of iron
Wrought
Enamels
give glossy finish
Varnish does not contain
pigment
Also called PTFE
Teflon
True or false. Contact process of H2SO4 manufacturing uses nickel as catalyst
False
Molecular weight of polymers are in the range of
10² to 10^7
Manufacturing of Chlorine
Deacon
Glass wares that react with HF are made of what glass
borosilicate
What is added to 35% oleum to prevent freezing during transport in winter season?
HNO3
Most stable phosphorous
black
20℅ oleum means
20 kg SO3 and 80 kg H2SO4
Inversion of sucrose produces
glucose
Linde gas liquefaction employs
Joule-Thomson expansion
Main usage of butadiene
Manufacture of sythetic rubber
_____ addition increases depth hardness of steel
Chromium
Oleum produces fumes of
SO3
Major use of butadiene
synthetic rubber
Fatty material used in soap making
Tallow
Conditions for liquefaction
High pressure
Low temperature
Color of ferrous sulphate
yellow
Sulfuric acid is used in what industry
fertilizer
Hydrazine is used in
rocket fuel
Liquid nitrogen is used as
refrigerative cooling
Acetylene + Hydrochloric acid
Vinyl Chloride
Chemical formula of oleum
H2S2O7 (SO3 +H2SO4)
Yellow glycerine is made into white using
Activated carbon
Which of the following is not an insecticide?
Hexane
Shrinkage volume does not depend upon the
sand to cement ratio
Equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to
√P
Chloroamines are used in water treatment
disinfection and taste and odor control
cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is
50%
Ore concentration by froth floatation uses ____ of ore particles as driving force
wetting characteristics
Sugar content in sugarcane on cane basis is
5 to 10% weight
True or false. Sugar content of molasses is about 10%
False, 55%
Paper that doesn’t require a filler during manufacture
Blotting
S to SO2
furnace — converter — absorber
Catalytic oxidation of toluene produces
phenol
Zeigler process
Production of HDPE or high density polyethylene
Sea weeds is a good source of
Iodine
The yield of pulp produced from fibrous raw material by mechanical process us about
<10
Good quality of coal should have
a. low fusion point of ash
b. high ash content
c. high S content
d. None
D. None
Which of the ff processes does not produce Cl2 as a co-product during the manufacture of soda ash?
Lime-soda process
Bleaching action of bleaching powder is due to its
oxidizing properties
Resistance to fusion of the refractory under a steady rising temperature
Refractoriness
Cumene is made by
Propylene alkylation of benzene
Polymerization product of C2F4 is called PTFE
Teflon
Starting materials in production of SBR
Ethylene
Ethyl Alcohol
Which of the ff is NOT an elastomer?
a. Polyisoprene
b. Neoprene
c. Nitrile-butadiene
d. None
D. None
Dacron is a …
None of these
Rancidity of fatty oil can be reduced by its
Hydrogenation
____ of rubber decreases due to vulcanization
Tackiness
Boiling of water containing temporary hardness produces
CO2
Phenol formaldehyde employs
condensation polymerization
Bisphenol A is produced by condesation of acetone with
phenol
Kraft process of paper manufacturing, white cooking liquor consists of caustic soda
sodium SULPHIDE
sodium carbonate
Substance to speed up sedimentation if sewage
Lime
Manufacture of Kraft pulp is done by
alkaline
industrial production of chloroform requires acetone and
Calcium hypochlorite
Hydrogenation of oil takes place in a
trickle bed reactor
_______ nature of hypo (sodium thiosulfate) makes it useful in photography
Complex forming
Ore of lead
Galena
Catalytic oxidation of toluene produces
Phenol
Production of alcohol from molasses is
a. aerobic
b. anaerobic
aerobic
Wrong statement about nitric acid
Arc process of nitric acid manufacture is more economical compared to Ostwald
Alcohol percentage from molasses
40
Sulphate vs sulphite process
both T and P in the former is more than that
Purest form of water
Rain water
Use of water with DO in boilers promote
corrosion
Unsaturated oils vs saturated oils
Lower MP and higher reactivity with O2
Electrodeposition of metals is never done on
Refractories
Hollander beater used during paper pulp manufacture does not facilitate the ___ of fiber
strengthening
Biochem treatment applied to sewage effluents is a
Oxidation process
A cane sugar factory having sugar production rate of 10 tons/day will produce about ____ tons of bagasse
10 tons of baggasse
Sucrose content in cane sugar may be around
95%
Hollander beater does bot accomplish
the final rolling out of paper
Very dilute solutions are used in fermentation at what temp range
30-50 °C
Major component of flint glass
Lead oxide
Gypsum is chemically
Calcium sulphate
Massecuite is
none of these
C content of pitch, residue of coal tar distillation
94%
Sodium salt of higher MW fatty acid is termed as ___ soap
soft
Synthetic glycerine is produced from
Propylene
Viscosity index improver is added to lubricant to
reduce the variation in its viscosity with temperature
Wrong statement to solvent extraction of oil
Rate of extraction decreases as the moisture of flakes increases
Polythene is a ____polymerization product
addition
Acetone is produced by catalytic dehydration of
isopropanol
Bromine content in sea water may be around
70 ppm
Percent by volume in air of Argon
0.94
Hydrogenation of oil is an
exothermic or endothermic
exothermic
Concentration of sulphide ores is done by
Froth floatation
Nylon 6-6 is manufacture from
Hexamethylene diamine and adipic acid
Grignard reagent
Ethyl magnesium chloride
Process absent in glass manufacturing
sintering
Production if 1 ton of dry pulp required ____ tons of bamboo or wood
2.5
Function of gypsum addition during cement making
decrease the cement settling rate
low purity O2 is used for
chemical oxidation processes
Wrong statement pertaining to glass properties
Sharp melting points
Deaeration of water
Minimizes corrosivenesa
Aryl benzene sulphonate is a
Detergent
Adipic acid is an intermediate in the manufacture of
Nylon-66
Temperature in the calcium carbide furnace
2000-2200 °C
Vinyl chloride is produced from thermal pyrolysis of ethylene dichloride at a P and T of
A.
4 kgf/cm²
500 °C
Soap removes dirt by
None of these
Reduce hydrophilic properties of cement
Ca and Al stearate
Used as a flux in the extraction of ore from iron ore in blast furnace
Limestone
Main difference between vegetable oils and fats are in their
Physical state
Starting raw material for manufacture of maleic anhydride
Either n-butane or benzene
True or false. Presence of sodium sulphate in pulp makes pulp bleachability poor
false
Which has the lowest amount if N2?
a. Coke oven gas
Calcination of limestone is NOT done in a ___ kiln to produce lime
fixed bed
Saponification value if oil or fat is a measure of
its average molecular weight
Production of DDT’s reaction temperature is maintained at
15-30 C
Sand and ___ are fused at 1300 C to produce sodium silicate
soda ash
Sucrose contains
glucose and fructose
Function of sodium thiosulphate in development of photographic film
Remove unexposed silver halide
High temp carbonization of coal takes place at
110 C
White phosphorus in stored under water
due to its low kindling temperature in dry air
Mercury electrolytic cells produces 50-70% NaOH. It’s operating temp is _____
60-70 C
Vanillin is a type of
flavor
Pure rectified spirit contains
95% alcohol
BP of oxygeb
-183 °C
Mercury cells for caustic soda manufacture, compared to diaphragm cells
None of these
Builders are added to soap
cleaning power booster
H2S is scrubbed using
ethanol amine
Zeolite
naturally occuring clay which us capable of exchanging cations
Glass used in optical work
Lead glass
True or False. Transparent soap are made by cold process.
False
Glass is a
supercooled liquid
Commonly used glass
soda glass
Limestone + _____ = High Alumina Cement
Bauxite
Massacuits is a term in the
sugar industry
Corrosion inhibitors for iron and steel in aqueous solution
Chromates
LD converter is used in the production of
steel
In Solvay, the product from calciner us
ligh soda ash
Commercially ethylene is produced from naphtha by
hydrocracking
Pig iron is produced by blast furnaces in India using mostly the iron ore named
hematite
Saponification value minus acid value
ester value
Fourdrinier machine is used in manufacturing
paper
Penicillin is made using what process
aerobic batch fermentation
Nylon 66’s name is due to the fact that
its average degree of polymerization of the polymer is 1966
_____of quicklime produces slaked lime
Hydration
Main product in calcium carbide-water reaction
C2H2
Which has the maximum amount of CO?
LD converter gas
Additional step in manufacture of paper from bagasse compared to that from bamboo
Depithing
% of glycerine present in spent lye obtained during soap manufacturing
5%
Concentration of NaOH solution produced by diaphragm electrolytic cell
10%
Commercial production of vanaspati is done by ____of edible vegetable oils
Hydrogenation
Catalyst in oxidation of ethylene to produce ethylene oxide
AgO
Mixture of Cl and NaBr acts as
fire retardant
High grade pulp
Sulphate pulp
Starting material of producing butadiene in India
Ethyl alcohol
Yellow phosphorus is transported under
water
Celluloid is
cellulose nitrate
Double contact double absorption process produces
Sulfuric acid
Thermoplastic materials
None of these
CCl4 is the starting material of
production it perchloroethylene
Products of coal tar distillation
Anthracene, Cresote oil, Carbolic oil
Chrome tanning and vegetable tanning are done in
Chrome tanning - light leather
Vegetable tabbing - heavy leather
Iron ore hematite is concentrated using
gravity separation
Nitrile rubber is produced from polymerization of
acrylonitrile and butadiene
Carbon disulphide is used in production of
viscose rayon
Efficient absorbent of SO3
98% H2SO4
Caprolactum/Nylon-6 is produced from
Benzene
% of uranium in carnotite ore found in Jadugoda
0.1 to 0.5
Potassium is kept and transported under
kerosene oil
Co-product during manufacture if soda by electrolysis if brine
H2
RDX is chemically known as
Cyclo TRIMETHYELENE TRINITRAAMINE
Anion exchanger is regenerated using
NaOH
catalytic oxidation of naphthalene produces
phthalic anhydride
Parathions and Malathions are
pesticides
Ethylene glycol + dimethyl terephthalate
Dacron
Lindane
BHC containing 99% gamma-isomer
By product in Solvay process
CaCl2
Ideal pulp for manufacture of paper should have high cellulose content
Vinegar
10% OH
1% HA
C. Both
Kopper-Totzek coal gasifier
can give ammonia synthesis gas
Sodium bisulphite us used for
deaeration and dechlorination of water
Flash points of most vegetable oils is about
200 °C
Dense soda ash
Na2CO3.H2O
Synthesis gas
CO + H2
Litharge
Lead oxide
Addition of chlorine in sewage treatment
grease separation
Constituents of glass
Sand
Lime
Soda Ash
Thorium is used
in manufacture of gas mantles
During the absorption of HCl gas in water, the gas is kept above dew point to
avoid corrosion
Electric bulbs are made of what glass
flint
Binding material in soap to improve soap texture
Borax
Washing soda
Na2CO3.10H2O
Phase of sulfur that is most stable at room temperature
Rhombic
Average S content in indian pyrites
35%
Silicon carbide is an
abrasive
Main constituent of mother liquor in salt industry
Bromine
Carborundum consists mainly of
Silicon carbide
Temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft
1000 °C
Systemic insecticides
absorbed throughout the plant
Chemical formula of BHC
C6H6Cl6
BHC is an insecticide. True or False.
True
Conversion of SO2 to SO3 in Monsanto-4 pass converter
98%
Coke oven gas mainly consist of
H2 and CH4
Main constituent of cotton seed oil
Linoleic acid
Lithopaneis
ZnS (white pigment)
True or False. Nicotine is a volatile alkaloid.
True
both a and b
Economics of Solvay depends on
ammonia recovery and size of plant
Flux addition during ore smelting
remove impurities/gangue
Hydrazine is used in water treatment for
DO removal
Direct conversion of chemical energy to electrical energy is done in a
fuel cell
Nylon 6 compared to Nylon 66 is having higher
a. hardness
b. abrasion
c. MP
d. none
none of these
most reactive allotrope of phosphorus
Yellow phosphorus or white phosphorus
Resin soap is added in paper manufacture to
impart resistance to penetration by liquids
H2 is not produced commercially by
iron-steam reaction
Most detrimental impurity in feed water for HP boiler
Silica
Other term for flint glass
Lead glass
Hydrocynic acid is used as an insecticide for
citrus fruits
Enzyme that converts starch to maltose
diastase
Fats dispersed in water
Butter
Catalyst in oxidation of benzene to form maleic anhydride
Vanadium Pentoxide
Blue color is imparted to glass by addition of
CaO
Bordeaux mixture is an
inorganic fungicide
Raw material for the manufacture of viscose rayon
fine teak wood
Commercial production of Calcium carbide requires limestone and ____ as raw materials
coke
Raw materials for nitroglycerene are glycerene, nitric acid, and
sulfuric acid
Converting rubber into a thin sheet or coating it with fabric
calendering
Process conditions in production of penicillin
2 atm
25 °C
Platinum can be poisoned by the presence of
arsenic
NaCl content in sea water
25 g/L
