MCQ
When an electron moves from $L-$ shell to $M-$ shell, then it will be accompanied by :
- ✓Energy absorption
- BEnergy emission
- Cgamma-ray emission
- Dgamma-ray absorption
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$(I)\,\,Ph-CH=CH-COOH$
$(II)\,\,p-NO_2-C_6H_4-CH=CH-COOH$
$(III)\,\,p-MeO-C_6H_4-CH=CH-COOH$
$(IV)\,\,p-Cl-C_6H_4-CH=CH-COOH$
$CH_3CH_2-C \equiv CH+ HCl \rightarrow B \xrightarrow{{HI}} C$