Ch-2 Experimental Techniques In Chemistry Leave a Comment / By abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "Ch-2 Experimental Techniques In Chemistry" Click on "Start Quiz" To Continue... 1. Which one of the following substance is used as decolorizing agent: Animal Charcoal Conc. Hâ‚‚SOâ‚„ CaClâ‚‚ Silica Gel None 2. Direct conversion of solid into vapours is called: Crystallization Sublimation Distribution Vaporization None 3. Which chemical do not undergo sublimation: KMnOâ‚„ NHâ‚„Cl Nephthaline Iodine None 4. The most common solvent used in solvent extraction is: Acetone Ethanol Rectified Spirit Diethyl Ether None 5. In paper chromatography the mobile phase is usually: Liquid Ammonia Water Organic Liquid None of these None 6. The iodine present in the water can be separated by which of the following techniques: Sublimation Chromatography Filtration Solvent Extraction None 7. Repeated extraction using small portion of solvent are more: Accurate Efficient Slow Rapid None 8. Purity of substance is checked by: Sublimation Chromatography Filtration Solvent Extraction None 9. In CClâ‚„ Solvent, Iâ‚‚ Shows: Blue colour Pink colour Purple colour Brown colour None 10. When hot saturated solution is coold very slowly we get: Medium size crystals Large size crystals Premature crystals No crystals None 11. Solvent extraction is an equilibrium process and it's controlled by: Law of mass action Distribution law The amount of solvent used The amount of salute None 12. Insoluble particles can be separated from a liquid by: Sublimation Chromatography Filtration Solvent Extraction None 13. The comparative rates at which the salute moves in the paper chromatography depend on: Size of paper Rf values of solutes Temperature of experiment Size of the chromatography tank used None 14. Solvent extraction method is a particularly useful technique for separation when the product to be separated is: Non-volatile or thermally unstable Volatile or thermally unstable Volatile or thermally stable None of these None 15. The solid which is left over the filter paper is called: Filtrate Residue Crystals Mud None 16. Safe and most reliable method of drying crystal is through: Filter paper Desiccator Oven None None 17. The solution left behind after the filtration of crystals is called: Residue Mud Crystals Mother Liquor None 18. Size of filter paper is selected according to the amount of: Solution Precipitate Water Solid particles None 19. Which of the following cannot be filtered by sintered glass crucible: KMnOâ‚„ solution Concentrated HCl Concentrated HF AgCl precipitates None 20. Sintered crucible is made up of: Plastic Glass Porcelain Steal None 21. Gooch crucibles are made up of: Plastic Glass Porcelain Steal None 22. Cold finger is used for effective: Filtration Sublimation Crystallization Chromatography None 23. The solvent or mixture of solvent used for the separation of compound is called: Mobile phase Mixed phase Stationary phase Solid phase None 24. Mixture of NaCl and NHâ‚„Cl can be separated by: Filtration Sublimation Crystallization Chromatography None 25. The component which shows maximum affinity for stationery phase will have: Large Rf Value Small Rf Value Intermediate Rf Value None None 26. The separation of two miscible liquid by heating due to difference of their boiling point is called: Vaporization Distillation Condensation Sublimation None 1 out of 6 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up
