Pure oxide refractories are generally monocrystalline in nature and are self bonded _______________ bricks are generally used as moderator in nuclear reactors?
Correct answer: A. Beryllia
- A. Beryllia
- B. Carborundum
- C. Corundum
- D. Thoria
Explanation
Beryllia has a very low neutron absorption cross-section while remaining effective in moderating fast neutrons, so it is used as a nuclear-reactor moderator. Thoria and corundum are not the standard answer for this function.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Plant Design and Economics
803 free Plant Design and Economics MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Plant Design and Economics questions
Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of________________?
Refractory bricks having lower porosity have_________________________?
Silica bricks are never used for lining the____________________?
Refractory bricks with lower permeability is produced by using __________________?
Refractories subjected to alternate cycles of heating & cooling are liable to loose their resistance to__________________?
Addition of zircon to silica refractory brick improves its_____________________?