MCQ
Keto-enol tautomerism is not observed in
- ✓$C_6H_5COC_6H_5$
- B$C_6H_5COCH_3$
- C$C_6H_5COCH_2COCH_3$
- D$CH_3COCH_2COCH_3$

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Assertion $A$ : $\left[ CoCl \left( NH _3\right)_5\right]^{2+}$ absorbs at lower wavelength of light with respect to $\left[ Co \left( NH _3\right)_5\left( H _2 O \right)\right]^{3+}$
Reason $R$ : It is because the wavelength of the light absorbed depends on the oxidation state of the metal ion.
In the light of the above statements, choose the correct answer from the options given below :

Statement $II:$- The crossed arrow of the dipole moment symbolizes the direction of the shift of charges in the molecules.
In the light of the above statements, choose the most appropriate answer from the options given below :-