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Chemistry MCQ Question - Experimental Techniques

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1. Which of the following elements react with steam to produce H2 gas.




2. Which of following metals can be displaced by all other metals from its solution




3. The unit of the rate constant (k) is same as that of rate of reaction




4. Which of the elements do not fall in stair case of the modern periodic table




5. Acid present in acid rain may be




6. Across short period the melting and boiling point increase upto




7. Which of the following elements conduct electricity and also melts below 100?C




8. Which of the following is the formula of chrome red.




9. The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is




10. Regular coiling or zigzagging of polypeptide through hydrogen bonding is its




11. Which of the following technique is used for the separation of insoluble particles from liquids?




12. Which of the following way in used for classification of chromatography?




13. Fluted filter paper is used to




14. Safe and the most reliable method of drying crystals is through




15. A substance having very high vapour pressure at its melting point on heating will show




16. A process controlled by Distributive law is




17. A technique of partition chromatography in which the solvent is in a pool at the bottom of container




18. Different components of a mixture have different Rf values due to




19. Branch of chemistry that deals with the complete qualitative and quantitative analysis of a substance is




20. Identification of the components of a sample is




21. Estimation of amounts of different components in a sample is




22. The technique used to separate components of mixture in solid phase.




23. The solid which is left over the filter paper as a result of filtration




24. Size of filter paper is selected according to the amount of




25. Gooch Crucibles are made up of




26. Rate of filtration can be increased by applying gentle suction




27. Sintered crucible is made up of




28. The tip of funnel should touch the wall of the breaker in order to avoid




29. Separation of a solid from its hot saturated solution by cooling is called




30. In crystallization if the solvent is inflammable then direct heating is




31. Which of the following technique is simple and efficient to purify a substance




32. In solvent extraction ether is used to separate products of organic synthesis from




33. 95% ethanol is called




34. The use of CaCl2 and PCl5 in the process of crystallization is as a




35. Ratio of the amount of solute in organic and aqueous solvent is




36. Without suction pump filtration is




37. Animal charcoal adsorbs the coloured




38. Direct conversion of solids into vapours is called




39. Crystallization does not involve




40. In CCI4 I2 shows




41. Repeated extraction using small portions of solvents is more




42. Silica gel and alumina are used as




43. Shaking two immiscible liquids increases




44. The solvent or mixture of solvents used for separation of compounds is called




45. Which is not a sublime material




46. Sintered glass is a porous material used for




47. Selection of filter paper depends on size of particles to be




48. The solution remaining after the formation of crystals is called




49. Which is not related pair of term used in analytical techniques




50. The major steps involved in complete quantitative analysis are