Q.1

Which of the following fertilisers is used as a cattle feed?

  • Urea
  • Calcium ammonium nitrate
  • Superphosphate
  • Ammonium sulphate
Q.2

In natural gas, the C/H ratio (by weight) varies in the range of

  • 3-4
  • 8-10
  • 15-17
  • 20-25
Q.3

Low grade coal is __________ to produce ammonia synthesis gas.

  • hydrogenated
  • liquefied
  • gasified
  • dehydrogenated
Q.4

Effectiveness of a fertiliser is independent of the

  • nature of soil
  • type of crop
  • pH of soil
  • none of these
Q.5

Which nutrient in fertiliser makes the plant stems stronger and increases branching ?

  • Nitrogen
  • Phosphorous
  • Potassium
  • Calcium
Q.6

Reaction of orthophosphoric acid with phosphate rock produces

  • superphosphate
  • triple superphosphate
  • metaphosphoric acid
  • monoammonium phosphate
Q.7

Rock phosphate used for the production of phosphatic fertiliser is mined at

  • Amjhor (Jharkhand)
  • Talchar (Orissa)
  • Bailladella (M.P.)
  • Kiriburu (Bihar)
Q.8

Gas based fertiliser plants use

  • natural gas as a source of hydrogen.
  • natural gas as heating medium.
  • coal gas as a source of hydrogen.
  • coal gas as heating medium.
Q.9

Which is the best fertiliser for paddy ?

  • Ammonium sulphate
  • Nitro-phosphate
  • Superphosphate
  • Potassium nitrate
Q.10

A potassic fertiliser containsK2O. It could be

  • potassium sulphate.
  • potassium chloride.
  • a mixture of NaCl+ KCl.
  • none of these.
Q.11

Pick out the wrong statement.

  • Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence the plant roots penetrate with difficulty.
  • Large excess use of nitrogenous fertiliser in land causes the problem of diarrhoea and cyanosis.
  • Application of large excess of potassic fertiliser in soil increases the valuable carotene in fruits and vegetables.
  • Cereal crops grown on alkaline soil absorb higher amount of flourides thereby spreading flourosis.
Q.12

Raw materials required for the production of CAN (Calcium ammonium nitrate) is NH3

  • HNO3 & limestone
  • CO2 & H2SO4
  • HNO3 & NH4Cl
  • CO2 & KNO3
Q.13

Biuret formation in urea is kept at minimum (< 1 %), because it is

  • corrosive in nature.
  • toxic and harmful to some crops.
  • helpful in decomposition of urea.
  • explosive in nature.
Q.14

Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth ?

  • Nitrogeneous fertiliser
  • Potassic fertiliser
  • Phosphatic fertiliser
  • None of these
Q.15

Which of the following set of conditions is favourable for the maximum yield of ammonia by Haber's process ?

  • High pressure, low reactants concentration, high temperature.
  • High pressure, low reactants concentration, low temperature.
  • High pressure, high reactants concentration, low temperature.
  • Low pressure, high reactants concentration, low temperature.
Q.16

Optimum reaction temperature in steam reforming of naphtha is __________ °C.

  • 700 - 1000
  • 300 - 450
  • 1500-1700
  • 100-200
Q.17

Flushing liquor used for cooling coke oven gas constitutes of

  • ammoniacal liquor
  • K2CO3 solution
  • dilute H2SO4
  • dilute HCl
Q.18

Temperature and pressure in ammonia converter is

  • 200 atm, 1000°C
  • 450 atm, 200°C
  • 450 atm, 550°C
  • 450 atm, 1000°C
Q.19

CaH4(PO4)2 is the chemical formula of

  • superphosphate
  • triple superphosphate
  • calcium phosphate
  • meta phosphoric acid
Q.20

Nitro-phosphate (manufactured at Trom-bay) is a __________ fertiliser.

  • mixed
  • complex
  • highly hygroscopic
  • highly explosive
Q.21

Catalyst used in steam reforming of naphtha is

  • bauxite
  • cobalt
  • nickel oxide on alumina support
  • chromium
Q.22

Catalyst used in desulphurisation of naphtha is

  • Co-Mo
  • Pt-Rh
  • silica gel
  • nickel
Q.23

Pick out the correct statement.

  • Reaction of NH3 with HNO3 to produce (NH4)2NO3 is endothermic.
  • With increase in NH3/CO2 ratio, urea yield decreases for a given temperature, pressure and total feed rate.
  • Biuret (an intermediate during urea manufacture) is toxic to seeds and animals.
  • both (b) and (c).
Q.24

Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in

  • low bulk density product
  • biuret formation
  • non-spherical prills
  • substantially wet non-flowing and sticky product
Q.25

Which of the following is a natural inorganic fertiliser ?

  • Chile salt petre
  • Oilcake
  • Gobar mannure
  • None of these
Q.26

pH value of soil is maintained at __________ by the addition of fertiliser for optimum growth and health of the plant.

  • 4-5
  • 7-8
  • 9-10
  • 12-13
Q.27

Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the

  • presence of an inert atmosphere.
  • presence of a reducing atmosphere.
  • absence of air.
  • presence of an oxidising atmosphere.
Q.28

Bio-fertilisers are cheaper, renewable and pollution free. They improve the __________ of the soil.

  • nutrient supply
  • texture
  • water holding capacity
  • all (a), (b) and (c)
Q.29

A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous.

  • salt & coke
  • sand & coke
  • and coke
  • and sand
Q.30

Catalyst used in the oxidation of ammonia is

  • platinum-beryllium
  • platinum-rhodium
  • cobalt-molybdenum
  • platinum-molybdenum
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