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Chemistry MCQ Question -Periodic Classification

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1. Inner transition elements are called




2. Seventh period contains ______________ normal elements




3. Modern periodic table has been divided in _______ blocks




4. Non-metals usually form ______________ oxides




5. Amphoteric exides are those which possess ________ properties




6. Best position of hydrogen in the periodic table is above I.A Group which is mainly due to




7. Hydrogen resembles with carbon because of having




8. Which one of the following sets consists of all coinage metals?




9. In which of the following pairs are elements belonging to the same group?




10. Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way?




11. Which one of the following is not a periodic property?




12. The atomic radii decreases by increasing atomic number in




13. Which discovery caused a revision in the periodic law as stated by Mendeleev?




14. An element has electronic conviguration 1s2 2s2 2p2. It belongs to




15. The property which increases upto group IV-A then decreases onwards




16. Which of the following ion is stable in aqueous solution?




17. The atoms of same element having same atomic number but different mass number are called




18. Deuterium reacts with oxygen to form




19. Which order of ionization energy is correct




20. Ionization energy depends upon




21. Shielding effect across the period




22. Addition of 2nd electron to a uninegative ion is always




23. Higher value of electron affinity means




24. Metallic characters of alkali metals




25. Melting points of VII-A group elements down the group




26. Oxidation state of an atom represents




27. Which of the following possesses maximum hydration energy?




28. Halides in which halogen atoms act as a bridge between two atoms of the other element are called




29. Less electronegative elements such as Be Ga A? etc form




30. Iodine is solid due to




31. True increasing order of acidity of the oxides of Mn is




32. Keeping in view the size of atom which order is correct one?




33. Which one of the following element has highest exidation state in its compounds?




34. Which of the following cannot exist in solution




35. Which of the following is different with respect to physical appearance?




36. Which one of the followings possesses melting point below 0?C?




37. Compounds of nitrogen and phosphorus are mostly




38. The most electronegative element among the following is




39. SO3 is not absorbed in water directly because




40. Phosphene gas will be produced if phosphorous acid is subjected to




41. Which of the following will give phosphoric acid one reaction with water




42. Which one of following is not a property of pure quartz?




43. Phosphorus is a Greek word and it means




44. Which of the following does not contain phosphorus?




45. Allotropic form of phosphorus that is poisonous is




46. Which one of the following is not the use of graphite?




47. Acetic anhydride can be obtained by treating ethyl alcohol with




48. The composition of brown ring in nitrate test is




49. Phosphorous acid upon thermal decomposition yields phosphoric acid and




50. Which one of the following compounds usually smells like garlic?