MCQ
Maximum number of spectral lines possible when an electron jumps from $5^{th}$ excited state to ground state in a sample containing only one Hydrogen atom will be
- A$4$
- B$14$
- ✓$5$
- D$15$

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$(i)\, N_2 + 2O_2 \to 2NO_2\,\,\, \Delta H = 67.9\,kJ$
$(ii)\, N_2 + 2O_2 \to N_2O_4\,\,\, \Delta H = 9.3\,kJ$
......$kJ$
$C{H_3} - C{H_2} - CH = C{H_2}\xrightarrow[{{H_2}{O_2}}]{{HBr}}$