A
suitable material of construction to use with fuming sulfuric acid is
(A)
Carbon steel
(B)
Stainless steel 304
(C)
Nickel
(D)
Monel
GATE 1997
Answer: (A)
Styrene-Butadiene
rubber is commercially manufactured by
(A)
Dehydration of ethanol
(B)
Methanol synthesis
(C)
Reformation of methane
(D)
Polymerization
GATE 1996
Answer: (D)
A
typical example of an exothermic reaction conducted at high pressures in
industry is
(A)
Dehydration of ethanol
(B)
Methanol synthesis
(C)
Reformation of synthesis
(D)
Polymerization of ethylene
GATE 1996
Answer: (D)
For
manufacture of styrene the major raw materials are _______ and ________. One
important copolymer of styrene is _______ which is widely used in the
manufacture of automobile tyres.
(A)
Benzene, ethylene, polypropylene
(B)
Benzene, ethylene, styrene butadiene
rubber
(C)
Toluene, nylon, ethylene
(D)
Toluene, nylon, polypropylene
GATE
1996
Answer: (B)
The
catalyst employed in i) oxidation of SO2, ii) oxidation of NH3
and iii) hydrogenation of vegetable oil, are
(A)
V2O5, Pt/Rhodium,
Raney Nickel
(B)
V2O5, Al2O5,
Raney Nickel
(C)
Fe2O3, Al2O5,
V2O5
(D)
Fe2O3, Al2O5,
Pt/Rhodium
GATE 1996
Answer: (A)
Phthalic
anhydride is produced by the oxidation of
(A)
Naphthalene
(B)
Benzene
(C)
Toluene
(D)
Aniline
GATE 1994
Answer: (A)
The
most widely used coagulant for removing suspended impurities from water is
(A)
Bleaching powder
(B)
Chlorine
(C)
Calcium sulfate
(D)
Alum
GATE 1994
Answer: (D)
Which
of the following fuels has the highest calorific value per unit mass
(A)
Coal
(B)
Kerosene
(C)
Natural gas
(D)
Furnace
GATE 1994
Answer: (C)
Solvay
process is used for the manufacture of
(A)
Caustic soda
(B)
Soda ash
(C)
Caustic potash
(D)
Soda lime
GATE 1994
Answer: (B)
A
biodegradable detergent is one which
(A)
Is manufacture using bio-technology
(B)
Contains straight chain alkyl benzenes
(C)
Contains branch chain alkyl benzenes
(D)
Is easily decomposed by micro-organisms
GATE 1993
Answer: (D)
Hydrogenation
of edible oils is done to
(A)
Decrease the number of unsaturated bonds
(B)
Lower the melting point of oil
(C)
Increase the thermal conductivity of oil
(D)
Enable the oil to be packed in tin
containers
GATE 1993
Answer: (A)
The
gas which contributes the maximum to the heating value of natural gas is
(A)
CO
(B)
CO2
(C)
CH2
(D)
CH4
GATE 1991
Answer: (D)
Catalyst
for plat forming of petroleum feed stock
(A)
Pt + Re
(B)
Pt + Rh
(C)
Pt
(D)
Pt + Co
GATE 1991
Answer: (A)
For
SO2/SO3 service at 400°C the recommended material of
construction is
(A)
Stainless steel
(B)
Carbon steel
(C)
Cast steel
(D)
Monel
GATE 1990
Answer: (A)
For
NH3 reactors the material of construction is
(A)
carbon steel
(B)
5 Cr. ½. Mo. Steel
(C)
Cast steel
(D)
Stainless steel
GATE 1990
Answer: (A)
Catalyst
used in the contact process of sulfuric acid manufacture is
(A)
Aluminium
(B)
Vanadium pentoxide
(C)
Iron oxide
(D)
Silicon dioxide
GATE 1989
Answer: (B)
Phosphoric
acid is handled in
(A)
Glass lined vessels
(B)
Aluminium vessels
(C)
Brass vessels
(D)
Stainless steel vessels
GATE 1989
Answer: (D)
Dilute
sulfuric acid is handled in vessels made of
(A)
Stainless steel
(B)
Brass
(C)
Lead
(D)
Cast iron
GATE
1989
Answer: (C)
For
handling concentrated hydrochloric acid a suitable material of construction is
(A)
Aluminium
(B)
Hastelloy
(C)
Stainless steel
(D)
Cast iron
GATE 1988
Answer: (B)
Epoxy resins
come under the category of
(A)
Thermoplastic
(B)
Thermosetting
(C)
Oil soluble or oil modified
(D)
Protein substances
GATE 1988
Answer: (B)
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