32051. Soluble silica present in boiler feed water can be removed by
32052. Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes
32053. Which of the following is a prime number?
32054. Radioactive solid nuclear wastes are disposed off by
32055. Growth of __________ is promoted by the presence of manganese in water.
32056. Average human body contains about __________ percent water by weight.
32057. Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels.
32058. If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur.
32059. Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by
32060. Persons working in cement plants and limestone quarries are more prone to disease like
32061. Particulates (< 1μm size) remaining suspended in air indefinitely and transported by wind currents are called
32062. Operating principle of cyclone separator is based on the action of __________ dust particles.
32063. Exposure to small amount of __________ results in high blood pressure & heart disease in human beings.
32064. Catalyst used in the manufacture of NH3 by Haber's process is finely divided
32065. Red phosphorous is changed into white phosphorous by
32066. Urea is represented as
32067. Two gas based fertiliser plants are located in
32068. Fertiliser plants get their N2 requirements
32069. During conversion of ammonium carbamate into urea, presence of large excess of water
32070. Hydrogen content of coke oven gas is __________ percent.
32072. Ammonium nitrate (a fertiliser) is coated with limestone powder to
32073. Action of phosphoric acid on rock phosphate produces
32074. Reaction of dilute sulphuric acid with phosphate rock produces
32075. Phosphoric acid is produced in wet process from phosphate rock and
32076. Base suspension fertiliser essentially contains
32077. Conditioners like finely divided peat are added to the fertiliser to
32078. Liquid ammonia is not used as such a fertiliser in tropical countries like India, because
In the following question, out of the four given alternatives, select the one which best expresses the meaning of the given word.Defer
32080. Which of the following does not come under the category of 'secondary nutrient' for plant growth?
32081. Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha ?
32082. (CH3 C6 H4)3 PO4 is the chemical formula of
32083. Which is a catalyst promoter used in catalytic ammonia synthesis reaction ?
32084. The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.
32085. Urea is a __________ fertiliser.
32086. Calcium ammonium nitrate (CAN) is
32087. CO2 present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in
32088. Which is the most suitable fertiliser for paddy ?
32089. Ammonium sulphate fertiliser is
32090. Lower temperature and large excess of ammonia in urea melt
32091. Superphosphate is manufactured by reacting phosphate rock with
32092. Vetrocoke solution is
32093. In calcium ammonium nitrate (CAN) fertil-ser
32094. P2O5 content in triple superphosphate is about __________ percent.
32095. H3PO4 is the chemical formula of __________ phosphoric acid.
32096. Heating of orthophosphoric acid to 250°C produces
32097. Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the __________ process.
32098. Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.
32099. Prilling tower is found in the flowsheet for the manufacture of
32100. Reaction of orthophosphoric acid with soda ash produces