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Chapter-2 - 11th - Experimental Techniques in Chemistry Preparation Multiple Questions and Answers.
| 36. | Without suction pump filtration is | ||
| A. | Fast process | ||
| B. | Slow process | ||
| C. | Rapid process | ||
| D. | All are possible | ||
| 37. | Animal charcoal adsorbs the coloured | ||
| A. | Impurities | ||
| B. | Crystals | ||
| C. | Solvents | ||
| D. | Both a & b | ||
| 38. | Direct conversion of solids into vapours is called | ||
| A. | Solvent extraction | ||
| B. | Sublimation | ||
| C. | Crystallization | ||
| D. | Vaporization | ||
| 39. | Crystallization does not involve | ||
| A. | Heating | ||
| B. | Sublimation | ||
| C. | Cooling | ||
| D. | Vaporization | ||
| 40. | In CCI4 I2 shows | ||
| A. | Red colour | ||
| B. | Purple colour | ||
| C. | Blue colour | ||
| D. | Yellow colour | ||
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