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Q1. Which among the following is an example of metalloid?
Q2. Ammonia gas is …………….. In nature
Q3. What is added to Alumina to dissolve it in electrolytic tank?
Q4. What is the percentage of water present in concentrated sulphuric acid?
Q5. Hydrogen gas is ……………….. In nature.
Q6. When the pH of a solution is 7.9, it is a .....
Q7. Of the following which one is used as a rocket fuel?
Q8. Of the following which one is a very reactive metal?
Q9. Of the following which one affects the rate of reaction?
Q10. Of the following which one is not a chemical reaction?
Q11. Sulphur dioxide acts as a ....
Q12. Sulphur dioxide is used in the field of ...
Q13. What is the term for heating of natural rubber with sulphur at a definite temperature?
Q14. The aqueous solution of ammonia turns……..
Q15. Liquid Hydrogen is used in the field of……..
Q16. Which of the following is used as a catalyst in the hydrogenation of oil to vanaspathy?
Q17. What kind of reaction does hydrogen undergoes in the sun to form Helium and releases tremendous energy?
Q18. White gold is prepared by alloying pure gold with….
Q19. Of the following which one is used in the newspaper industry?
Q20. What are the metals present in type metal?
Q21. What metal is present in Haemoglobin
Q22. Heating steel to bright red hot temperature and suddenly cooling it is called…
Q23. Which of the following is known as the King of metals?
Q24. Impure sand and rocks present along with the metal is called .....
Q25. What substance is added during the metallurgy to remove the impurities?
Q26. By which process volatile metals like Mercury and Zinc are purified?
Q27. By which process Zinc blende and Galena are concentrated?
Q28. Compound of Aluminium oxide `with impurities of Cobalt and Titanium Compound is better known as ...
Q29. Ruby, the precious gem contains…….
Q30. Non metals are good………………
Q31. Which of the following is widely used in the Computers?
Q32. Which of the following is used in the making of car parts, railway lines,bridges, pipes and axles?
Q33. Of the following which one is used in the making of permanent magnets?
Q34. Nickel Steel with 46% nickel is used in the manufacture of .....
Q35. Nickel Steel with 36% nickel is used in the manufacture of…….
Q36. Nickel steel with 2% nickel is used in the manufacture of ...
Q37. The steel used in the making of radio valves is.......
Q38. The Steen used for making surgical instruments and cutlery is….
Q39. Addtion of Selenium Sulphide in glass gives …………. color
Q40. Blue color is imparted to the glass by the addition of ....
Q41. Ferric oxide gives ………… ………….. In glass
Q42. Green colour is imparted to glass by adding……..
Q43. Of the following, which one is used in endoscopes>
Q44. Of the following which one is used for making bullet proof glass?
Q45. Which one is used for making ovenware, injection ampules and flasks?
Q46. Which glass has high resistance to heat and shock?
Q47. Opticla glass has…..
Q48. Soda glass is known as ...
Q49. The reaction between glass and hydrofluoric acid is called ...
Q50. The raw material required for the manufacture of glass are ....