chemical engineering fertilizer technology MCQs – Page 6

Practise multiple-choice questions from chemical engineering fertilizer technology for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering fertilizer technology Mcqs

101. ____________ catalyst is used in the production of urea from CO2 and NH3?
0

A. Vanadium pentoxide

B. Nickel

C. No

D. Alumina

102. Which of the following does not come under the category of secondary nutrient for plant growth ?
0

A. Sulphur

B. Calcium

C. Oxygen

D. Magnesium

103. Which is a catalyst promoter used in catalytic ammonia synthesis reaction ?
0

A. Al2O3

B. Cr2O3

C. MnO

D. K2O

104. Which is the best fertiliser for paddy ?
0

A. Potassium nitrate

B. Ammonium sulphate

C. Nitro-phosphate

D. Superphosphate

105. Potassic fertilisers__________________?
0

A. Help in development of starches of potatoes and grain

B. None of these

C. Stimulate early growth and accelerate seeding

D. Are useful during early stage of the plant growth

106. Phosphorus vapour comprises of ___________________?
0

A. P4

B. P2

C. P

D. P3

107. The optimum size of the ammonia plant is ______________ tons/day?
0

A. 1000

B. 1000

C. 10

D. 100

108. The composition of fresh feed to the high temperature, high pressure urea autoclave is______________________?
0

A. Excess liquid ammonia and compressed CO2 gas

B. Excess liquid ammonia and liquefied CO2

C. Liquid ammonia and excess compressed CO2

D. Compressed ammonia gas and excess compressed CO2

109. With increases in pressure, the conversion of Ammonium carbamate into urea___________________?
0

A. Can either increase or decrease depends on biuret content

B. Decreases

C. Remains unaltered

D. Increases

110. Nitrogenous fertiliser is required__________________?
0

A. For accelerating fruit formation in later stage of growth

B. During the early stage of growth to promote development of stem and leaves

C. To lessen the effect of excessive potash application

D. None of these

111. Catalytic ammonia synthesis reaction as in Habers process is_________________?
0

A. Endothermic

B. Exothermic

C. Irreversible

D. None of these

112. Maximum nitrogen percentage is in________________?
0

A. Calcium ammonium nitrate

B. Ammonium sulphate

C. Liquid ammonia

D. Urea

113. Yield of elemental phosphorous from rock phosphate is about _____________ percent?
0

A. 2-Jan

B. 40-45

C. 60-65

D. 15-25

114. The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about ____________ percent?
0

A. 95

B. 100

C. 60

D. 30

115. Which of the following set of conditions is favourable for the maximum yield of ammonia by Habers process ?
0

A. High pressure, low reactants concentration, low temperature

B. High pressure, low reactants concentration, high temperature

C. High pressure, high reactants concentration, low temperature

D. Low pressure, high reactants concentration, low temperature

116. Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis ?
0

A. Electrolysis of water

B. Steam reforming of naphtha

C. H2 separation from coke oven gas

D. Cracking of natural gas

117. NPK means a ______________ fertiliser?
0

A. Mixed

B. Liquid

C. Potassic

D. Solid

118. Iron is not used alone as a catalyst in ammonia synthesis, because___________________?
0

A. It gets oxidised above 500C

B. It decomposes ammonia

C. Its activity declines rapidly, if heated to above 520C

D. None of these

119. Maximum stability of white phosphorous is at__________________?
0

A. > 600C

B. Atmospheric pressure

C. Room temperature

D. Very high pressure

120. Action of phosphoric acid on rock phosphate produces_________________?
0

A. Superphosphate

B. Triple superphosphate

C. Diammonium phosphate

D. Nitrophosphate

Previous Next

Showing 101 to 120 of 193 mcqs