\(C_6H_5MgBr \rightarrow\) P P is
1)`C_6H_5CHO`
2) `C_6H_5COO`
3) `C_6H_5OH`
4) `C_6H_5-CO-C_6H_5`

C_6H_5CH_2OH is

C_(6)H_(5)CH=CH-CO-C_(6)H_(5)

Arrange the following alchols in the decreasing order of their reactivity with HRr : (1) C_6 H_5CH_2OH (2) (C_6H_5)_2 CHOH (3) (C_6H_5)_3 COH (4) p-O_2 NC_6H_4 CH_2OH (5) p-C1C_6 H_4CH_2OH .

The major products that are formed by heating C_(6)H_(5)-CH_(2)-O-C_(6)H_(5) with HI (A) 2C_(6)H_(5)I (B) C_(6)H_(5)CH_(2) Iand C_(6)H_(5)OH (C) 2C_(6)H_(5)OH (D) C_(6)H_(5)CH_(2)OH and C_(6)H_(5)I

Arrange the following in the increasing order of their reactivity in nucleophilic addition reactions : C_6 H_5 CHO,C_6H_5 COCH_3, C_6 H_5 COC_6 H_5