This set of Chemical Industry Multiple Choice Questions & Answers (MCQs) focuses on “Inorganic Chemical – Uranium”.
1. Which of the following have lowest percentage of uranium present in them?
a) Pitchblende
b) Monazite sands
c) Carnotite
d) Phosphate rock inclusions
View Answer
Explanation: The percentage of uranium in pitchblende is 1 – >10%U, in Carnotite is 0.1-0.5%U, in monazite sands is 0.25%U, in phosphate rock inclusions is 0.01-0.03%U.
2. The processes 1, 2, 3 in uranium conversion process are __________
a) i.hydrofluorination ii.carbide furnacing iii.reduction
b) i.reduction ii.carbide furnacing iii.hydrofluorination
c) i.carbide furnacing ii.reduction iii.hydrofluorination
d) i.reduction ii.hydrofluorination iii.carbide furnacing
View Answer
Explanation: In de nitration process roasting of nitrate to UO3 takes place followed by UO3 reduction to UO2 by hydrogen. Then it either reacts with HF (hydro fluorination) or reacts with C (carbide furnacing).
3. Which of the following is the primary reason for applying fluidized bed technique in uranium gaseous conversion processes?
a) Highly turbulent mixing
b) Good heat transfer
c) Internal heat exchange surfaces
d) Closed system
View Answer
Explanation: The primary reason for applying fluidized bed technique in uranium gaseous conversion processes is, it being a closed system as uranium releases alpha radiation harmful to human body.
Sanfoundry Global Education & Learning Series – Chemical Industry.
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