Match list-I and list-II

• A. Hypophosphoric acid H₄P₂O₆
• B. Isohypophosphoric acid H₄P₂O₆
• C. Pyrophosphorous acid H₄P₂O₅
• D. Pyrophosphoric acid H₄P₂O₇

• 1. Non-reducing
• 2. P in +4 state
• 3. P in +3 state
• 4. P-P bond
• 5. P-O-P bond

a. A-1,2,4; B-3,5; C-3,5; D-1,5

b. A-1,2; B-3,4; C-3,5; D-5

c. A-2; B-3,5; C-3; D-1,4

d. A-4; B-1,3,5; C-4,5; D-2,5

To match the acids from list-I with their corresponding characteristics from list-II, let's analyze each acid and its properties:

Acid Properties Overview

• A. Hypophosphoric acid (H₄P₂O₆):
  • Non-reducing
  • Phosphorus in +4 state
  • P-P bond
• B. Isohypophosphoric acid (H₄P₂O₆):
  • Phosphorus in +3 state
  • P-O-P bond
• C. Pyrophosphorous acid (H₄P₂O₅):
  • Phosphorus in +3 state
  • P-P bond
• D. Pyrophosphoric acid (H₄P₂O₇):
  • Non-reducing
  • P-O-P bond

Matching Analysis

Now, let's match each acid with the correct characteristics:

• A matches with 1 (Non-reducing), 2 (P in +4 state), and 4 (P-P bond).
• B matches with 3 (P in +3 state) and 5 (P-O-P bond).
• C matches with 3 (P in +3 state) and 5 (P-O-P bond).
• D matches with 1 (Non-reducing) and 5 (P-O-P bond).

Final Matching

The correct match is:

A-1,2,4; B-3,5; C-3,5; D-1,5

Thus, the answer is option a.