Q.1

Sulphur addition in soap is done to

  • improve the soap texture.
  • cure pimples & dandruff.
  • fasten lather formation.
  • increase its cleansing action.
Q.2

Cumene is the starting material for the production of

  • benzoic acid
  • phenol and acetone
  • isoprene
  • styrene
Q.3

The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at

  • SASOL (in South Africa).
  • Redcar (U.K.).
  • Los-Angles (U.S.A.).
  • Trombay (India).
Q.4

Free alkali in a toilet soap is __________ that in a laundary shop.

  • less than
  • more than
  • same
  • none of these
Q.5

Vulcanisation of rubber

  • decreases its tensile strength.
  • increases its ozone & oxygen reactivity.
  • increases its oil & solvent resistance.
  • converts its plasticity into elasticity.
Q.6

Pick out the wrong statement.

  • Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98%.
  • The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide.
  • Vitriol oil is nothing but technical sulphuric acid.
  • Decomposition of sulphuric acid on heating does not start before its boiling.
Q.7

Which of the following has sodium bicarbonate as its main constituent ?

  • Baking soda
  • Baking powder
  • Washing soda
  • none of these
Q.8

Phosphate rock is a raw material for the manufacture of

  • phosphorous
  • phosphoric acid
  • superphosphates
  • all (a), (b) and (c)
Q.9

The type of high refractive index glass used in optical instruments is __________ glass.

  • pyrex
  • flint
  • crookes
  • none of these
Q.10

Lurgi coal gasifier is a pressurised __________ bed reactor.

  • moving
  • fixed
  • fluidised
  • entrained
Q.11

Dehydrogenation of isopropanol produces

  • propyl alcohol
  • acetone
  • trichloroethylene
  • formaldehyde
Q.12

Raw materials for 'Solvay Process' for manufacture of the soda ash are

  • salt, limestone and coke or gas.
  • ammonia, salt and limestone.
  • ammonia limestone and coke.
  • none of these.
Q.13

Solvent used for extraction of oil is

  • hexane
  • methyl ethyl ketone
  • furfurol
  • none of these
Q.14

Ordinary glass is not a/an

  • amorphous isotropic material.
  • supercooled liquid.
  • material with sharp definite melting point.
  • electrical insulator.
Q.15

Oxidation of SO2 to SO3 is favoured by

  • low temperature and low pressure.
  • low temperature and high pressure.
  • high temperature and low pressure.
  • high temperature and high pressure.
Q.16

Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its

  • poor oxidation stability and high gum forming tendency.
  • greater tendency of decomposition at elevated temperature.
  • hydrolysis tendency in presence of water.
  • all (a), (b) and (c).
Q.17

Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.

  • nickel
  • vanadium
  • alumina
  • iron
Q.18

Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils

  • cause cholesterol build up and blood clotting.
  • are prone to rancid oxidation.
  • always contain some amount of nickel (as their complete removal is very difficult).
  • have affinity to retain harmful sulphur compounds.
Q.19

Pick out the wrong statement.

  • Eosin requirement in tallow soap is about 40-50% which fastens the lather formation, softens the hard soaps and increases its cleansing action.
  • Soap powder is prepared by mixing soap with hydrated sodium carbonate.
  • Detergents differ from soaps in their action in hard water.
  • Tarnish inhibitor (e.g., benzotriazole) is added in soap to facilitate the removal of stains due to tea, blood etc.
Q.20

__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.

  • Pyrex
  • Soda lime
  • Lead
  • High silica
Q.21

Black liquor is converted into white liquor by

  • evaporation and burning the concentrate followed by causticisation of products.
  • multi-effect evaporation only.
  • selective liquid extraction.
  • extractive distillation.
Q.22

Laboratory glass wares which reacts with hydroflouric acid, are made of the __________ glass.

  • lead
  • borosilicate
  • soda lime
  • alkali silicate
Q.23

Thermosetting materials

  • are cross-linked molecules.
  • soften on application of heat.
  • are solvent soluble.
  • none of these.
Q.24

Chloral is used in the manufacture of

  • DDT
  • BHC
  • parathion
  • none of these
Q.25

Insulin is an __________ drug.

  • anti-malarial
  • anti-TB
  • antibiotic
  • none of these
Q.26

In premitive days, __________ was being manufactured by Leblanc Process.

  • alum
  • washing soda
  • soda ash
  • calcium carbide
Q.27

Gun powder, which is an explosive comprises of charcoal, sulphur and

  • glycerene
  • salt petre
  • nitro glycerene
  • dynamite
Q.28

Which of the following is not a raw material used for the manufacture of ordinary glass?

  • Iron oxide
  • Soda ash
  • Limestone
  • Silica
Q.29

Most commonly used rubber vulcanising agent is

  • sulphur
  • bromine
  • platinum
  • alumina
Q.30

Paper grade bamboo contains about __________ percent cellulose.

  • 5
  • 20
  • 40
  • 60
Q.31

Concentration of hydrogen peroxide is done by

  • crystallisation
  • vacuum crystallisation
  • atmospheric distillation
  • dehydration
Q.32

Helium is produced on commercial scale from

  • air
  • natural gas
  • coke oven gas
  • none of these
Q.33

The amount of benzene present in pure benzol is about __________ percent.

  • 30
  • 50
  • 70
  • 90
Q.34

Cumene (isopropyl benzene) is made by

  • oxidation of napthalene.
  • propylene alkylation of benzene.
  • polymerisation of a mixture of benzene & propylene.
  • none of these.
Q.35

Varnish does not contain

  • thinner
  • pigment
  • both (a) & (b)
  • neither (a) nor (b)
Q.36

Prussian blue is chemically represented by

  • FeO.TiO2
  • Ca SO4 . 2H2O
  • Fe4 [Fe (CN6)3]
  • AlF3 . 3NaF
Q.37

Pick out the wrong statement. Iodine value of an oil or fat is

  • the number of grams of iodine taken up by 100 gm of oil or fat.
  • a measure of its unsaturation.
  • helpful in findings its adulteration & its suitability for making soap.
  • independent of the type of oil, whether it is drying or non-drying.
Q.38

Bromine is used in the preparation of

  • fire extinguishing compounds.
  • fire proofing agents.
  • dyes and antiknock compounds.
  • all (a), (b) and (c).
Q.39

Refractory bricks having high thermal conductivity is desirable, when it is to be used in the

  • L.D. converter
  • blast furnace
  • rotary kiln
  • recuperator
Q.40

Liquor poisoning generally occurs due to the presence of __________ in it.

  • ethyl alcohol
  • impurities
  • methyl alcohol
  • carbonic acid
Q.41

Fatty material used in soap making is

  • fatty acid
  • fatty alcohols
  • tallow
  • detergents
Q.42

Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like

  • high cost
  • fragile nature
  • easy poisoning tendency
  • all (a), (b) and (c)
Q.43

Which of the following paper does not require a filler during manufacture ?

  • Bond paper
  • Writing paper
  • Blotting paper
  • Coloured paper
Q.44

Starting raw material for the manufacture of alum is

  • alumina
  • gypsum
  • bauxite
  • ammonium bicarbonate
Q.45

Esterification reaction

  • produces soap.
  • is reversible.
  • is a reaction between an alcohol and an organic acid.
  • all (a), (b) and (c).
Q.46

Terylene is

  • same as dacron
  • a polyester
  • both (a) & (b)
  • neither (a) nor(b)
Q.47

Carboxymethyl cellulose (CMC) is added in detergents to act as a/an

  • surfactant
  • builder
  • optical brightening agent
  • anti soil redeposition agent
Q.48

Which of the following is not a pyrite ore?

  • Celestite
  • Galena
  • Gypsum
  • Siderite
Q.49

Solvent extracted oil

  • has low free fatty acid content.
  • is odourless.
  • has more of unsaturates.
  • none of these.
Q.50

DDT stands for

  • diethyl-diphenyl-trichloromethane.
  • dichloro-diphenyl-trichloromethane.
  • diphenyl-dichloro-trichloromethane.
  • dichloro-diphenyl-trichloroethane.
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