alleryStart learning →Which hot, chemically active liquid used in some nuclear reactors is named as well suited to magnetic pumping?
ALiquid nitrogen
BLiquid helium
CLiquid mercury
DLiquid sodium
Answer & Solution
Correct answer: D. Liquid sodium
1. A pump with no moving parts is attractive for a hot and chemically active substance.
2. Liquid sodium employed in some nuclear reactors is exactly such a substance.
3. Mechanical seals and bearings would be attacked by it, while a magnetic pump has none.
4. Liquid nitrogen and liquid helium are cryogenic coolants and are not the named case here.
_Source: OpenStax College Physics (CC BY 4.0), Ch 22 "Magnetism", section 22.7 Magnetic Force on a Current-Carrying Conductor_
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