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| सूची-$I$ | सूची-$II$ |
| $1.$ सिरका (Vinegar) का विलयन | $a.$ $pH = 7.4$ |
| $2.$ रक्त (Blood) | $b.$ $pH = 2.5$ |
| $3.$ वाशिंग सोडा का विलयन | $c.$ $pH = 7.0$ |
| $4.$ शुद्ध जल | $d.$ $pH = 12$ |
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