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The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is

The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is Correct Answer Lower

The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is lower.
Breeder reactors are also fast reactors. Fast neutrons are ideal for plutonium production because they are easily absorbed by U238 to create Pu239 and they cause less fission than thermal neutrons.

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Fast breeder reactor is a nuclear reactor which produces electricity
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Pick out the wrong statement below:
I. For the same conversion, the holding time required in a batch reactor, is always equal to the space time required in a PFR.
II. Two mixed reactors of unequal size are available for producing a specified product, formed by a homogenous second order reaction. To achieve maximum production rate, the smaller reactor should be placed in series before the larger reactor.
III. Arrehenius equation describing the effect of temperature on rate constant is given by, $${\text{K}} = {\text{A}}.{{\text{e}}^{ - \frac{{{\text{Ea}}}}{{{\text{RT}}}}}}$$
IV. The mechanism for the decomposition of CH3CHO into CH4 and CO in presence of I2 is:
CH3CHO + I2 → CH3I + HI + CO; slow
CH3I + HI → CH4 + I2; fast
Then the rate of disappearance CH3CHO is equal to K.CCH3l.CHl and acts as a catalyst.
What is the difference in size of thermal reactor and fast reactor?