MCQ
An element A decays into element C by a two step process :
A → B + ${2^{He}}^4$
B → C + ${2^e}^{-}$
Then
A → B + ${2^{He}}^4$
B → C + ${2^e}^{-}$
Then
- ✓A and C are isotopes
- BA and C are isobars
- CA and B are isotopes
- DA and B are isobars
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Statement $1$ : A pure semiconductor has negative temperature coefficient of resistance.
Statement $2$ : On raising the temperature, more charge carriers are released into the conduction band