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Q1. Which quantum number represents the sub shell?
Q2. The main shell L has the principal quantum number as……
Q3. When the principal quantum number n is 3, the main shell is represented as…….
Q4. What was discovered by J J Thompson in 1897?
Q5. The shape of p-orbital is.........
Q6. Which of the following was discovered by Goldstein?
Q7. The shape of orbit generally is
Q8. The shape of s-orbital is.......
Q9. Which of the following metal is used in oil painting?
Q10. Electrons behave as……
Q11. "Liquation" process is used for purifying metals/non metals with……
Q12. Which of the following metal is purified by "liquation"?
Q13. Which of the following alloy is used in the manufacture of steel?
Q14. Metals have ...
Q15. In which process the powdered ore is washed in a current of water?
Q16. "Gravity Separation" process is used for the concentration of…..
Q17. The lustrous non metal is .....
Q18. The ore which is concentrated by magnetic separation is........
Q19. What will be colour of the precipitate formed, when sodium sulphate is treated with Bariumchloride solution?
Q20. When Barium chloride is added to a solution A, white precipitate insoluble in conc.HCl is produced. A is likely to contain the ion……
Q21. Which of the following acid is used in car batteries?
Q22. When oleum is diluted with water, it gives……
Q23. Which of the following does not liberate hydrogen gas with dilute sulphuric acid?
Q24. From which of the following, concentrated sulphuric acid removes water?
Q25. What is the term for the glowing of phosphorous with greenish colour?
Q26. Which of the following phosphorous variety does not react with alkali?
Q27. Of the following, which one is used in the manufacture of smoke bomb?
Q28. Among the following which element is used in the manufacture of insecticides and detergents?
Q29. Why White Phosphorous is always kept under water?
Q30. Bone Ash is rich in.........
Q31. What is the gas evolved when phosphorous reacts with Caustic Soda?
Q32. Common Salt in water is an example of .....
Q33. The molecular weight of the substance is 180. If 180 g of it is dissolved in 1000 g of water, the concentration of the solution is known as ………….
Q34. In electro refining, the pure metal is deposited on…………..
Q35. The article to be electroplated si made as the……..
Q36. The degree of dissolution increases ……………. of the solution.
Q37. An example of a solution of a gas in gas is........
Q38. When no more solute can be made to dissolve in a solution, it is known as a …………… solution.
Q39. Covalent compounds have ……………point.
Q40. Hydrogent Chloride is an example of…………… compound.
Q41. The force that binds the ions together is called ..... force.
Q42. Ionic bonds are……..
Q43. In a covalent bond the atoms are held together by……..
Q44. Ionic compounds are ......
Q45. An atom gaining one or more electrons becomes……….
Q46. An atom losing one or more electrons becomes…………
Q47. Among the noble gases, except helium, other noble gases outermost shell has…… electrons.
Q48. In reduction reaction, there is………….in the oxidation number.
Q49. The Oxidation number of metallic irons is……….
Q50. The number of protons present in the nucleus of an element is equal to its number of ....
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