MCQ
Which compound gives yellow ppt. with iodine and alkali
- A$2-$ hydroxy ethane
- ✓Acetophenone
- CMethyl acetone
- DAcetamide

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The substance $'B'$ is
[Assume $100 \%$ ionisation of the complex and $CaCl _{2},$ coordination number of $Cr$ as $6,$ and that all $NH _{3}$ molecules are present inside the coordination sphere $]$