Which of the following is a neutron absorber?

P b

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A g

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C d

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C u

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Solution

The correct option is C $C d$
The purpose of neutron absorber is to have a controlled reaction.
The most important neutron absorber is 10B as 10B4C in control rods, or boric acid as a coolant water additive in PWRs. Other important neutron absorbers that are used in nuclear reactors are xenon, cadmium, hafnium, gadolinium, cobalt etc.

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Similar questions

Given: $F e_{(s)} \to F e^{2 +} + 2 e^{-}; E^{o} = + 0.44 V$

$P b_{(s)} \to P b^{2 +} + 2 e^{-}; E^{o} = + 0.13 V$

$A g^{+} e^{-} \to A g; E^{o} = + 0.8 V$

$C u^{2 +} 2 e^{-} \to C u; E^{o} = + 0.34 V$

Which of the following metals will oxidise iron?

a) $A g$

b) $C u$

c) $P b$

d) None of these

P b + C u (N O_{3})_{2} \to P b (N O_{3})_{2} + C u

C u + A g (N O_{3})_{2} \to C u (N O_{3})_{2} + A g

Z n + P b (N O_{3})_{2} \to Z n (N O_{3})_{2} + P b

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