હિલિયમના સંદર્ભમાં નીચેના પૈકી કયુ વિધાન ખોટુ છે ?
AIEEE 2004, Medium
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c (c) Helium is twice as heavy as hydrogen, its lifting power is $92\%$ of that of hydrogen. Helium has the lowest melting and boiling point of any element which makes liquid helium an ideal coolant for many extremely low temperature application such as super conducting magnet and cryogenic research where temperature close to absolute zero are needed.
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