MCQ
In Balmer series of hydrogen atom spectrum which electronic tranition causes third line
- ✓Fifth Bohr orbit to second one
- BFifth Bohr orbit to first one
- CFourth Bohr orbit to second one
- DFourth Bohr orbit to first one
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Major product $(A)$ of the above reaction
| List $I$ Isomeric pairs | List $II$ Type of isomers |
| $A$ Propanamine and $N-$Methylethanamine | $I$ Metamers |
| $B$ Hexan$-2-$one and Hexan$-3-$one | $II$ Positional isomers |
| $C$ Ethanamide and Hydroxyethanimine | $III$ Functional isomers |
| $D$ $o-$nitrophenol and $p-$nitrophenol | $IV$ Tautomers |
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