2.9 Which one of the following is a redox reaction ?(A) H, - Br, + 2HB(B) 2NaCl + H,SOA - Na,so+ 2HCI(C) HCI + AgNO, = AgCl + HNO,(D) NaOH + HCI = NaCl + H2O

2.9 Which one of the following is a redox reaction ?(A) H, - Br, + 2

1.	2.9 Which one of the following is a redox reaction ?(A) H, - Br, + 2HB(B) 2NaCl + H,SOA - Na,so+ 2HCI(C) HCI + AgNO, = AgCl + HNO,(D) NaOH + HCI = NaCl + H2O
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