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| Q.49 | निम्नलिखित में से किस प्रक्रिया में एक ठोस पदार्थ को गर्म करके वाष्पीकृत किया जाता है, और उसकी वाष्प को ठंडी सतह पर वापस ठोस के रूप में संघनित किया जाता है? | |
| Ans | 1. आसवन | |
| 2. वर्णलेखन (क्रोमैटोग्राफी) | ||
| 3. निस्यंदन | ||
| 4. ऊर्ध्वपातन |
Correct Ans Provided: 4
