Q.1

Sand and __________ is fused at 1300°C, to produce sodium silicate.

  • limestone
  • soda ash
  • coke
  • sodium sulphate
Q.2

Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have

  • high electrical insulation properties.
  • sharp melting points.
  • low co-efficient of thermal expansion.
  • compressive strength much greater than their tensile strengths.
Q.3

Bakelite is

  • same as poly tetrafluoroethylene (PTFE).
  • an inorganic polymer.
  • same as thermosetting phenol-formaldehyde.
  • not a polymer.
Q.4

__________ is not a constituent of gun powder.

  • Carbon
  • Charcoal
  • Sulphur
  • Potassium nitrate
Q.5

Nylon 6-6 is manufactured from

  • hexamethylene diamine and adipic acid.
  • hexamethylene diamine and maleic anhydride.
  • caprolactum.
  • dimethyl terephthalate and ethylene glycol.
Q.6

Type of glass used in optical work is the __________ glass.

  • soda-lime
  • fibre
  • lead
  • borosilicate
Q.7

L.D. converter is used in the production of

  • pig iron
  • steel
  • copper
  • zinc
Q.8

Manufacture of phthalic anhydride uses __________ as a catalyst.

  • Ni
  • Cr
  • V2O5
  • Al2O3
Q.9

Nylon-6 is manufactured from

  • caprolactum.
  • hexamethylene diamine and adipic acid.
  • hexamethylene diamine and maleic anhydride.
  • hexamethylene diamine and sebacic acid.
Q.10

Chrome tanning and vegetable tanning are done for

  • light & heavy leather respectively.
  • heavy & light leather respectively.
  • both light & heavy leather.
  • neither light nor heavy leather.
Q.11

Kopper-Totzek coal gasifier

  • can give ammonia synthesis gas (H2 + N2).
  • is a moving bed reactor.
  • cannot use coking coal.
  • operate at very high pressure.
Q.12

Dehydrogenation of ethyl benzene produces

  • styrene
  • naphthalene
  • phenol
  • benzoic acid
Q.13

Phenolic antiseptics are added in the __________ soap.

  • shaving
  • medicated
  • metallic
  • transparent
Q.14

P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as

  • bakelite
  • neoprene
  • teflon
  • nylon-66
Q.15

Caprolactum (a raw material for nylon-6 manufacture) is produced from

  • phenol
  • naphthalene
  • benzene
  • pyridine
Q.16

Pencillin is made employing __________ fermentation process.

  • continuous
  • aerobic batch
  • anaerobic batch
  • none of these
Q.17

Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of

  • nitric acid
  • sulphuric acid
  • ammonium sulphate
  • hydrochloric acid
Q.18

Which of the following is the second major component of cement ?

  • Al2O3
  • SiO2
  • CaO
  • Fe2O3
Q.19

Starting material for the production of butadiene in India is

  • naphthalene
  • benzol
  • ethyl alcohol
  • phthalic anhydride
Q.20

Cellulose percentage in bamboo fibre is about

  • 10
  • 20
  • 50
  • 85
Q.21

More thanpercent of __________ is present in oleum.

  • SO3
  • H2SO4
  • H2SO3
  • SO2
Q.22

Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about __________ °C.

  • -53
  • -103
  • -183
  • -196
Q.23

Solvay process as compared to dual process (i.e. modified Solvay process)

  • can use low grade brine.
  • has less corrosion problems.
  • involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl.
  • both (b) and (c).
Q.24

Coke used for the production of calcium carbide should have

  • low ash content.
  • low ignition temperature.
  • high electrical resistivity.
  • all (a), (b) and (c).
Q.25

Hydrophilic group of a soap or detergent solution is

  • water hating
  • soil loving
  • water loving
  • none of these
Q.26

Pick out the wrong statement pertaining to the soap manufacture.

  • Transparent soaps are made by cold process.
  • Organic pigments are used as colouring materials in the soap manufacture.
  • Both laundary as well as toilet soaps are manufactured by hot process.
  • Colourless rosin is used in the manufacture of laundary soaps.
Q.27

The terminology 'BTX' used in coal tar distillation industry refers to

  • benzol-toluol-xylol.
  • benzol-toluene-xylene.
  • benzene-toluol-xylol.
  • benzene-toluene-xylene.
Q.28

Which of the following is not a product of coal tar distillation ?

  • Anthracene
  • Cresote oil
  • Carbolic oil
  • None of these
Q.29

Teflon is

  • phenol formaldehyde.
  • an inorganic polymer.
  • poly tetrafluoroethylene (P.T.F.E.).
  • a monomer.
Q.30

Permanent hardness of water can be removed by

  • boiling.
  • adding Ca(OH)2.
  • boiling it with Na2CO3.
  • none of these.
Q.31

Sizing material is incorporated in paper to

  • impart resistance to penetration by liquids.
  • increase its thickness.
  • increase its flexibility & opacity.
  • increase its brightness.
Q.32

Catalyst used during the manufacture of 'Vanaspati Ghee' is

  • zinc
  • nickel
  • platinum
  • copper
Q.33

__________ of quicklime produces slaked lime.

  • Hydration
  • Dehydration
  • Hydrogenation
  • none of these
Q.34

Main product in calcium carbide-water reaction is

  • Ca(OH)2
  • C2H2
  • CO2
  • CaCO3
Q.35

Addition of calcium oxide to water produces

  • exothermic heat
  • hissing sound
  • slaked lime
  • all (a), (b) & (c)
Q.36

Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces

  • nylon-6
  • dacron
  • polyester
  • PVC
Q.37

Solvay process is used for the manufacture of

  • caustic soda
  • soda ash
  • caustic potash
  • soda lime
Q.38

Raw material used in alcohol distilleries in India is

  • molasses
  • benzol
  • methylated spirit
  • none of these
Q.39

The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by

  • electrolysis
  • electrolytic reduction
  • electrolytic oxidation
  • none of these
Q.40

Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo ?

  • Depithing
  • Digestion
  • Bleaching
  • None of these
Q.41

In the production of soda ash by Solvay process, the by-product is

  • CaCl2
  • NH4Cl
  • NH3
  • NaOH
Q.42

The purpose of adding Na2CO3 to water of low alkalinity is to

  • permit the use of alum as a coagulant.
  • increase the softening capacity of zeolite.
  • facilitate easy regeneration of zeolite.
  • all (a), (b) and (c).
Q.43

Ca(OH)2 is called

  • quicklime
  • slaked lime
  • limestone
  • gypsum
Q.44

Sulphuric acid saturated with SO3 is called

  • concentrated H2SO4.
  • sulphurous acid.
  • oleum.
  • none of these.
Q.45

Which of the following is an explosive ?

  • Nitroglycerene
  • Trintrotoluene (TNT)
  • Cellulose nitrate
  • All (a), (b), and (c)
Q.46

Yellow phosphorus is transported under

  • air
  • water
  • nitrogen
  • helium
Q.47

Commonly used glass is known as the __________ glass.

  • flint
  • hard
  • pyrex
  • soda
Q.48

Builders are added in soap to act as

  • cleaning power booster
  • anti-redeposition agent
  • corrosion inhibitor
  • fabric brightener
Q.49

Sucrose is a disaccharide consisting of

  • glucose and glucose
  • glucose and fructose
  • glucose and galactose
  • fructose and galactose
Q.50

Which of the following is not responsible for causing permanent hardness of water ?

  • Ca(HCO3)2
  • CaCl2
  • MgCl2
  • none of these
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