I. Ph−CH3i. CrO2Cl2−−−−−−−→ii. H+/H2O II. Ph−CCl3KOH−−−→excess III. Ph−CH2OHPCC−−−→ IV. Ph−O||C−ClH2−−−−−−−→Pd−BaSO4 V. Ph−C≡Ni. SnCl2/HCl−−−−−−−−→ii. H+/H2O VI. Ph−HCO/HCl−−−−−−−−→anhyd. AlCl3 VII. Ph−HCH3Cl−−−−−−−−→anhyd. AlCl3H+,KMnO4−−−−−−−→Δ Consider following reactions and give the number of reactions which prooduce benzaldehyde as final major product.

I. Ph−CH3i. CrO2Cl2−−−−−−−→ii. H+/H2O II. Ph−CCl3

1.	I. Ph−CH3i. CrO2Cl2−−−−−−−→ii. H+/H2O II. Ph−CCl3KOH−−−→excess III. Ph−CH2OHPCC−−−→ IV. Ph−O\|\|C−ClH2−−−−−−−→Pd−BaSO4 V. Ph−C≡Ni. SnCl2/HCl−−−−−−−−→ii. H+/H2O VI. Ph−HCO/HCl−−−−−−−−→anhyd. AlCl3 VII. Ph−HCH3Cl−−−−−−−−→anhyd. AlCl3H+,KMnO4−−−−−−−→Δ Consider following reactions and give the number of reactions which prooduce benzaldehyde as final major product.
Answer» $I . P h - C H_{3} i . C r O_{2} C l_{2} - ------ \to i i . H^{+} / H_{2} O$ $I I . P h - C C l_{3} K O H - -- \to excess$ $I I I . P h - C H_{2} O H P C C - -- \to$ $I V . P h - O \| \| C - C l H_{2} - ------ \to P d - B a S O_{4}$ $V . P h - C \equiv N i . S n C l_{2} / H C l - ------- \to i i . H^{+} / H_{2} O$ $V I . P h - H C O / H C l - ------- \to anhyd. A l C l_{3}$ $V I I . P h - H C H_{3} C l - ------- \to anhyd. A l C l_{3} H^{+}, K M n O_{4} - ------ \to Δ$ Consider following reactions and give the number of reactions which prooduce benzaldehyde as final major product.