section 2 Flashcards
Calgon used in water treatment is chemically
a. sodium phosphate
b. sodium hexametaphosphate
c. calcium phosphate
d. tricresyl phosphate
b
Which oil is preferred for paint manufacture?
a. Drying oil
b. Non-drying oil
c. Semi-drying oil
d. Saturated oil
a
Styrene butadiene rubber (SBR) is
a. a natural rubber.
b. a synthetic polymer.
c. a synthetic monomer.
d. another name of silicone rubber.
b
Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at
a. 1 atm & 100°C
b. 5 atm & 275°C
c. 100 atm & 500°C
d. 50 atm & 1000°C
b
Glycerine is not used in the
a. manufacture of explosive.
b. conditioning and humidification of
tobacco.
c. manufacture of pharmaceuticals.
d. none of these.
d
Cumene is the starting material for the production of
a. benzoic acid
b. phenol and acetone
c. isoprene
d. Styrene
b
The type of high refractive index glass used in optical instruments is __________ glass.
a. pyrex
b. flint
c. crookes
d. none of these
b
Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic
anhydride on commercial scale.
a. nickel
b. vanadium
c. alumina
d. Iron
b
Most commonly used rubber vulcanising agent is
a. sulphur
b. bromine
c. platinum
d. Alumina
a
Terylene is
a. same as dacron
b. a polyester
c. both (a) & (b)
d. neither (a) nor(b)
c
Free alkali in a toilet soap is __________ that in
a laundry shop.
a. less than
b. more than
c. same
d. none of these
a
Dehydrogenation of isopropanol produces
a. propyl alcohol
b. acetone
c. trichloroethylene
d. Formaldehyde
b
Pick out the wrong statement.
a. Eosin requirement in tallow soap is about 40-50% which fastens the lather formation, softens the hard soaps and increases its cleansing action.
b. Soap powder is prepared by mixing soap
with hydrated sodium carbonate.
c. Detergents differ from soaps in their action
in hard water.
d. Tarnish inhibitor (e.g., benzotriazole) is
added in soap to facilitate the removal of
stains due to tea, blood etc.
d
Concentration of hydrogen peroxide is done by
a. crystallisation
b. vacuum crystallisation
c. atmospheric distillation
d. Dehydration
b
Helium is produced on commercial scale from
a. air
b. natural gas
c. coke oven gas
d. none of these
b
Fermentation of molasses to produce ethyl alcohol is done at __________ °C
a. 20 - 30
b. < - 5
c. 100 - 150
d. 250 - 300
a
The catalyst used in the manufacture of DDT is
a. alumina.
b. silica.
c. 20% oleum.
d. aluminium chloride.
c
- Most widely and commonly used coagulant for the removal of suspended impurities in water is
a. bleaching powder
b. slaked lime
c. alum
d. copper sulphate
c
__________ is used as a catalyst in fat splitting.
a. ZnO
b. Ni
c. V2O5
d. FeO
a
Which of the following is not produced on commercial scale from sea water?
a. Bromine.
b. Magnesium compounds.
c. Potassium compounds.
d. Sodium sulphate.
d