MCQ
The major products formed:
(Image)
$A$ and $B$ respectively are:
- A

- ✓

- C

- D

(Image)
$A$ and $B$ respectively are:






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$C{H_3} - COOH\xrightarrow{{N{H_3}}}A\xrightarrow{\Delta }B\xrightarrow[{B{r_2}}]{{KOH}}C$
Between the two tautomers which is more stable ?
$(A)$ Line emission spectra are used to study the electronic structure
$(B)$ The emission spectra of atoms in the gas phase show a continuous spread of wavelength from red to violet
$(C)$ An absorption spectrum is like the photographic negative of an emission spectrum
$(D)$ The element helium was discovered in the sun by spectroscopic method