See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

(i)   red hot 4 2 4 7 2 x NH Cl Na B O BN NaCl H O     (ii) o 4 NaBH 140 C 3 4 3 3 3 3 3 3 6 BCl NH Cl B N H Cl B N H    (iii) 4 KBF K B KF     (iv)     2 3 2 4 2 3 3 B O Cr SO Cr BO    (v)     3 2 CH NH 2 6 2 3 2 4 2 B H BH CH NH BH        (vi)     3 3 CH N 2 6 3 3 3 B H 2BH . CH N  