Q.1

__________ is used as a catalyst in fat splitting.

  • ZnO
  • Ni
  • V2O5
  • FeO
Q.2

Which of the following is not produced on commercial scale from sea water?

  • Bromine.
  • Magnesium compounds.
  • Potassium compounds.
  • Sodium sulphate.
Q.3

The catalyst used in shift converter is

  • nickel
  • vanadium
  • silica gel
  • alumina
Q.4

Which of the following is a detergent ?

  • Benzene hexachloride
  • Alkyl benzene sulphonate
  • Polytetraflouroethylene
  • Cellulose nitrate
Q.5

__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.

  • Solvay
  • Ostwald's
  • Haber's
  • none of these
Q.6

Sulphuric acid solution having a specific gravity of 1.at room temperature is used mainly for the

  • fertiliser manufacture
  • car battery solution
  • synthesis of oleum
  • water treatment
Q.7

Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively

  • V2O5 & Cr2O3.
  • oxides of nitrogen & Cr2O3.
  • V2O5 on a porous carrier & oxides of nitrogen.
  • oxides of nitrogen & V2O5 on a porous carrier.
Q.8

Glycerine is not used in the

  • manufacture of explosive.
  • conditioning and humidification of tobacco.
  • manufacture of pharmaceuticals.
  • none of these.
Q.9

Thermosetting plastic materials

  • can be repeatedly melted.
  • is useful for melt casting.
  • can not be melted after forming.
  • is useful for spinning.
Q.10

In sulphate pulp manufacture, the pressure and temperature in the digestor is

  • 10 atm., 800 °C
  • 10 atm., 170-180°C
  • 1 atm., 170 - 180°C
  • l atm., 800°C
Q.11

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

  • calcium sulphate
  • sodium chloride
  • sodium sulphate
  • magnesium chloride.
Q.12

Pasteurisation of milk means

  • removal of fatty and albuminous substance from it.
  • killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics.
  • inhibiting the growth of micro-organisms without killing them.
  • none of these.
Q.13

Pasteurisation of milk means

  • removal of fatty and albuminous substance from it.
  • killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics.
  • inhibiting the growth of micro-organisms without killing them.
  • none of these.
Q.14

Fusion of bauxite and __________ produces high alumina cement.

  • alum
  • limestone
  • coke
  • quartz
Q.15

All enzymes are made of

  • fats
  • carbohydrates
  • proteins
  • amino acids
Q.16

__________ process is used for the manufacture of sodium carbonate by ammonia soda process.

  • Ostwald's
  • Bosch
  • Solvay
  • Haber's
Q.17

Haemoglobin is a/an

  • amino acid
  • biological catalyst
  • protein
  • enezyme
Q.18

Which is the main reducing agent during production of iron from iron ore in a blast furnace ?

  • C
  • CO
  • CO2
  • H2
Q.19

Paper pulp produced by kraft/sulphate process is

  • bleached easily
  • dull white in color
  • strong fibrous
  • dark colored
Q.20

Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.

  • adsorbs
  • oxidises
  • reduces
  • converts
Q.21

Sucrose content in the raw juice extracted from sugar cane is about __________ percent.

  • 1 - 2
  • 15 - 20
  • 50 - 60
  • 80 - 85
Q.22

The combustion reaction, C + O2 = CO2, is

  • exothermic
  • endothermic
  • autocatalytic
  • none of these
Q.23

Polycaprolactum is commercially known as

  • nylon-6
  • nylon-66
  • dacron
  • rayon
Q.24

Epoxy resin

  • is a good adhesive.
  • is an elastomer.
  • cannot be used for surface coatings.
  • is a polyester.
Q.25

The drug used in contraceptives is

  • sulphadizene
  • mestranol
  • methyl salicylate
  • pencillin
Q.26

Claude process of gas liquefaction employs

  • merely compression of gas beyond its critical pressure.
  • Joule-Thomson expansion cooling.
  • heat exchange with colder stream.
  • adiabatic expansion against a piston or in a turbine.
Q.27

Producer gas consists mainly of

  • CO, CO2 N2, H2
  • CO, H2
  • H2, CH4
  • C2H2, CO2, H2
Q.28

Fusel oil is a/an

  • essential oil.
  • extract from medicinal herbs.
  • mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses).
  • none of these.
Q.29

Styrene is produced from ethyl benzene by the process of

  • dehydrogenation
  • oxidation
  • alkylation
  • dehydration
Q.30

Frasch process is for

  • making oxygen
  • producing helium
  • mining sulphur
  • making nitrogen
Q.31

Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.

  • 10
  • 25
  • 50
  • 98
Q.32

Raw materials used for producing __________ cement does not contain iron oxide.

  • waterproof
  • slag
  • white
  • pozzolan
Q.33

The main use of HCl is in the

  • drilling of petroleum wells and pickling of steel sheets.
  • manufacture of cationic detergent.
  • treatment of spent fuel of nuclear reactor.
  • none of these.
Q.34

Neoprene is the trade name of

  • polyurathane
  • phenol formaldehyde
  • polychloroprene
  • styrene-butadiene rubber
Q.35

Styrene-butadiene-rubber (SBR) as compared to natural rubber has

  • Poorer tensile strength.
  • poorer resistance to oxidation.
  • greater amount of heat build-up under heavy loading.
  • all (a), (b) and (c).
Q.36

Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of

  • callagen
  • tannin
  • molasses
  • carbohydrate
Q.37

Very fine suspended and colloidal impurities are removed from water by a process called

  • sedimentation
  • coagulation
  • disinfection
  • softening
Q.38

Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda?

  • High cost of mercury.
  • High specific gravity of mercury.
  • Non-availability of high purity mercury.
  • Pollution of water stream by mercury.
Q.39

In the Lurgi coal gasifier

  • coking coals cannot be used.
  • low carbon conversion efficiency is achieved.
  • entrainment of solids is higher.
  • large quantity of coal can be processed.
Q.40

The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction.

  • exothermic
  • endothermic
  • catalytic
  • autocatalytic
Q.41

Viscose rayon is chemically

  • cellulose nitrate
  • regenerated cellulose nitrate
  • cellulose acetate
  • regenerated cellulose acetate
Q.42

Hard water

  • does not affect the lather formation by soap.
  • is not unfit for drinking purpose.
  • pollutes the water stream.
  • all (a), (b) and (c).
Q.43

Which of the following is an organo-metal-lic compound ?

  • Isopropyl alcohol
  • Tetra-ethyl lead
  • Zeolite
  • Cumene
Q.44

Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

  • CaO
  • MnO2
  • ZnO
  • FeS
Q.45

The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is

  • dilute H2SO4
  • oleum
  • ultraviolet light
  • none of these
Q.46

The chamber process is

  • preferred over contact process for producing 98 to 100% H2SO4 and various oleums.
  • non-catalytic and operates only on pyrites.
  • a batch process for directly producing high strength (98 to 100%) H2SO4.
  • none of these.
Q.47

Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because

  • its calorific value is very less.
  • tar neutralises the residual acids present in pitch.
  • it reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop.
  • all (a), (b) and (c).
Q.48

Esterification reaction produces

  • detergent
  • vanaspati
  • soap
  • mercaptans
Q.49

Neon gas is

  • flammable in nature.
  • used in color discharge tube.
  • filled in lamps having tungsten filament.
  • all (a), (b) and (c).
Q.50

Heating of __________ to 120°C, produces plaster of paris.

  • blue vitriol
  • gypsum
  • calcium silicate
  • calcium sulphate
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