1. Identify products A and B 2. 3. CH3 dil. KMnO4 CrO3 A- B 273 K CH3 CH3 (A) A: OH B: OH OH CH3 CH3 (B) A: OH OH B: (C) A: OHCCH,CH,CH, CCH, B: HOOCCH,CH,CH, CH3 CH3 (D) A: B: OH -CH3 The electrode potential of M+ / M of 3d-series elements shows positive value for: (a) Cu (b) Co (c) Zn (d) Fe Consider the elements Mg, Al, S, P and Si, the correct increasing order of their first ionization enthalpy is: (a) Al < Mg 4. 5. Given below are two statements: Statement I: Colourless cupric metaborate is reduced to cuprous metaborate in a luminous flame. Statement II: Cuprous metaborate is obtained by heating boric anhydride and copper sulpahte in a non-luminous flame. In the light of the above statements, choose the most appropriate answer from the options given below (a) Statement I is false but Statement II is true (c) Both Statement I and Statement II are false 'A' and 'B' in the following reactions are: (b) Both Statement I and Statement II are true (d) Statement I is true but Statement II is false NH NaNO2/HCI CN KCN (A) (A): NCI (B) (A): CN SnCI,/ HCI / HO -(A) (B) CI (B): (B): CHO (C) (A): (B): NCI CHO (D) (A): (B):