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Q1. In p-orbital the maximum number of electrons present will be…….
Correct answer : 3
Q2. Energy is emitted when an electron jumps from ..... shell to ... shell.
Correct answer : 1
Q3. Rutherford's atomic model does not account for……….
Correct answer : 3
Q4. Orbits are …………..
Correct answer : 4
Q5. When an electron is present in a stationary orbit it ……………………………. Energy
Correct answer : 2
Q6. Reduction is a chemical reaction which involves……….
Correct answer : 3
Q7. Oxidising agents are…………
Correct answer : 4
Q8. The oxidation number of an element in the free state is……….
Correct answer : 1
Q9. Neil Bohr proposed that the electrons revolve around the nucleus only in…………
Correct answer : 2
Q10. Hydrogen has .... Isotopes.
Correct answer : 3
Q11. The equivalent weight of a trivalent element is 9. Its atomic weight will be………
Correct answer : 2
Q12. The tribasic acid Phosphoric Acid has a molecular weight of 98. What will be its equivalent weight?
Correct answer : 1
Q13. Acidity of a base is the number of replacable ……………
Correct answer : 3
Q14. Basicity of an acid is the number of replacable .....
Correct answer : 4
Q15. In the titration of weak acid with a weak base………………
Correct answer : 4
Q16. A solution containing 40g of NaOH in 1 litre of water is…………….
Correct answer : 4
Q17. The equivalent weight of a base depends on its …………..
Correct answer : 4
Q18. The molecular weight of sulphuric acid is 98. What will be its equivalent weight?
Correct answer : 2
Q19. One mole of carbon dioxide contains ……g of Carbon
Correct answer : 3
Q20. PV= Constant at Constant temperature is known as………………
Correct answer : 3
Q21. The weight of 5 moles of water is…………
Correct answer : 3
Q22. The atomicity of Nitrogen is…………….
Correct answer : 3
Q23. An ideal gas always obeys ...
Correct answer : 3
Q24. When the vapour density of oxygen is 16, what will be its molecular weight/
Correct answer : 32
Q25. In an endothermic reaction, the heat is…………..
Correct answer : 1
Q26. Energy has to be supplied to the reactants in which of the following reactions?
Correct answer : 4
Q27. A reaction which is brought about by supplying electric current is called as……..
Correct answer : 2
Q28. In an exothermic reaction, the total energy of the reactants will be .......
Correct answer : 2
Q29. With which of the following steels, watch springs and razor blades are made?
Correct answer : 2
Q30. Manganese Steel is generally used in the manufacture of…………..
Correct answer : 2
Q31. "Ammonal" is a mixture of which of the following?
Correct answer : 2
Q32. Thermite is used in the field of .....
Correct answer : 3
Q33. "Thermite" is a mixture of which of the following?
Correct answer : 3
Q34. With which of the following Razor blades are made?
Correct answer : 4
Q35. Which one of the following is one of the properties of non-metals?
Correct answer : 4
Q36. Which one of the following is one of the properties of a metal?
Correct answer : 3
Q37. Generally a metal is extracted from its oxide ore by the process of .....
Correct answer : 3
Q38. Ruby is an oxide of which of the following?
Correct answer : 4
Q39. Magnetite is an ore of which of the following?
Correct answer : 1
Q40. Aluminium is purified by which of the following process?
Correct answer : 1
Q41. The alloy Spiegeleisen contains which of the following?
Correct answer : 4
Q42. Among the following which one is electro positive element?
Correct answer : 4
Q43. Of the following, which one is not an ore of iron?
Correct answer : 2
Q44. Of the following, which one is used for making strong permanent magnets?
Correct answer : 3
Q45. Of the following which one is used in the manufacture of cooking vessels and chocolate wrappers?
Correct answer : 4
Q46. Aluminium Powder and Ammonium Nitrate mixture used for explosive is known as……..
Correct answer : 3
Q47. Why Aluminium is widely used in electric cables?
Correct answer : 2
Q48. Of the following, which one does not exhibit allotropy?
Correct answer : 1
Q49. Among the following, which one is the main property of sulphuric acid?