section 11 Flashcards
Lithopaneis
a. explosive
b. white lead
c. filter aid
d. ZnS (white pigment)
d
What products do we get on electrolysis of
saturated brine using steel cathode and graphite
anode in an electrolytic cell?
a. Cl2 & Na
b. Cl2 & H2
c. O2 & H2
d. Cl2, H2 & NaOH solution.
d
__________ acid is the main constituent of
cotton seed oil.
a. Acetic
b. Linoleic
c. Palmitic
d. Oleic
b
Chemical formula of ‘salt cake’ is
a. Na2SO4
b. CaSO4
c. MgSO4
d. BaSO4
a
Temperature during hydrogenation of oil should
not be more than 200°C, otherwise it will result in
a. pyrolysis of oil.
b. sintering of porous catalyst.
c. hydrogen embrittlement.
d. all (a), (b) and (c).
d
Nicotine is
a. a volatile alkaloid.
b. obtained by treating by-products of the
tobacco processing industry.
c. both (a) and (b).
d. neither (a) nor (b).
c
Separation of fresh water from sea water can be
done by the __________ operation.
a. osmosis
b. reverse osmosis
c. absorption
d. Adsorption
b
Na2CO3.10H2O is called
a. washing soda
b. soda ash
c. slaked lime
d. Quicklime
a
Reaction of an alcohol with organic acid is called
the __________ reaction.
a. saponification
b. esterification
c. neutralisation
d. Acidification
b
Ethanol amine is produced using ammonia and
a. ethyl benzene
b. ethylene oxide
c. ethanol
d. ethane
b
__________ acid is an unsaturated fatty acid.
a. Palmitic
b. Oleic
c. Stearic
d. Oxalic
b
CO & H2 are the constituents of
a. producer gas
b. water gas
c. coke oven gas
d. all (a), (b) and (c)
d
Economics of ‘Solvay Process’ depends upon
the efficiency of
a. carbonating tower
b. ammonia recovery
c. ammonia recovery and size of the plant
d. ammoniation of salt solution
c
__________ is a thermosetting plastic.
a. Polyvinyl chloride
b. Polythene
c. Bakelite
d. Teflon
c
Na2CO3 is called
a. washing soda
b. soda ash
c. plaster of paris
d. Calcite
b
Flux addition during smelting of ore is done to
a. remove impurities/gangue.
b. enhance rate of reaction.
c. accelerate reduction of ore.
d. separate slag from metal.
a
Hydrazine is used in water treatment for the
removal of
a. colloidal impurities
b. dissolved oxygen
c. turbidity
d. chlorinous taste
b
Direct conversion of chemical energy into
electrical energy is done in a
a. magnetohydrodynamic (MHD) generator.
b. fuel cell.
c. fast breeder reactor.
d. none of these.
b
Which of the following is not produced
commercially from sea water?
a. Magnesium & potassium compounds
b. Common salt
c. Bromine
d. Iodine
d
Pick out the wrong statement.
a. Dry process is used for the manufacture of
cement when the raw material is blast
furnace slag.
b. Portland cement is made employing wet
process.
c. Gypsum is added to Portland cement to
lengthen its setting time.
d. none of these.
d