JEE CHEMISTRY UNIT 13
QUIZ NO 3
TOTAL QUESTIONS = 20


1. Which of the following is used to measure the refractive index of liquids?


2. What is the boiling point of a pure liquid under normal atmospheric pressure?


3. Which method is suitable for separating a mixture of volatile liquids?


4. What is the principle of chromatography?


5. What is the purpose of adding a boiling chip during distillation?


6. Which of the following methods can separate a mixture of two solids with different solubilities?


7. What is the role of silica gel in chromatography?


8. Which method is used to purify liquids that decompose at their boiling points?


9. Which gas is commonly used in gas chromatography?


10. Which technique is used to analyze the purity of an organic solid?


11. Which technique is used to separate volatile liquids with close boiling points?


12. Which technique is best for separating amino acids in a mixture?


13. Which of the following is used to dry an organic solvent?


14. Which method is used to purify a solid substance that sublimates?


15. Which of the following is used as the stationary phase in thin-layer chromatography?


16. What is the principle of distillation under reduced pressure?


17. Which drying agent is commonly used in organic synthesis?


18. Which of the following is used as a drying agent for organic solvents?


19. Which of the following is a qualitative analysis method for organic compounds?


20. Which of the following is used to separate amino acids in a mixture?



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