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Khub.info Learn TNPSC exam and online pratice
Q1. Normal availability of Chlorine in bleaching powder ranges between…
Q2. Sodium Carbonate is used in the manufacturing field of…….
Q3. The anyhydrous sodium carbonate is known as ...
Q4. Sodium carbonate decahydrate is also known as ....
Q5. When the pH of a solution is 2, then the solution is termed as .....
Q6. In which of the following Lactic Acid is present………
Q7. Generally, the rate of a chemical reaction ....
Q8. In a reversible reaction at equilibrium the .....
Q9. Tooth paste is .....in nature
Q10. Among the following which one has the least pH value?
Q11. What will be the colour of cabbage juice when it is added to tooth paste?
Q12. What is the PH range of milk?
Q13. Of the following which one has the high pH value?
Q14. What is the pH range of soft drinks?
Q15. What is the pH range of gastric juice?
Q16. What is the pH range of saliva……..
Q17. What is the acid present in the stomach juices?
Q18. Of the following, which one is an endothermic reaction?
Q19. Of the following reactions which one is an exothermic reaction?
Q20. During respiration glucose in food burns in oxygen and .....
Q21. Respiration that occurs in our body cells is .....
Q22. All combustions reactions are………
Q23. Of the following, which one is not a slow reaction?
Q24. Generally reactions between covalent compounds are ...
Q25. The reaction between ionic compounds are …………
Q26. Which of the factors increases the rate of the reaction by increasing them?
Q27. The change in the concentration of the reactant or product per unit time is called as……
Q28. What happens when baking soad is touched with wet hand?
Q29. What happens when washing soda is dissolved in water?
Q30. When copper sulphate crystal is heated, the change of colour that takes place is.......
Q31. A bond breaking and a bond making process is called ......
Q32. Of the following which one is a slow reaction?
Q33. Which of the following compounds is charred by concentrated sulphuric acid?
Q34. Which one does not react with Caustic Soda?
Q35. Acetylene is …………… compound
Q36. Tritium has atomic number 1 and mass number 3. What will be the number of particles present in its nucleus?
Q37. The filling up of orbitals by electrons takes place according to……
Q38. Ammonium Hydroxide is a ...
Q39. Equivalent weight of an element can be obtained by the atomic weight by….
Q40. The weight of 2 moles of water is.......
Q41. The volume occupied by 2.8g of nitrogen at S.T.P is………litres
Q42. If the vapour density of a volatile substance is 14, what would be its molecular mass?
Q43. 28g of nitrogen occupies .......litres
Q44. The building units of the universe are……
Q45. Of the following which one is an 'element'?
Q46. Of the following non metals which one forms an essential contituent of the bones?
Q47. Which of the following is used in the manufacture of telegraph wires?
Q48. High Speed tools are made from…….
Q49. Which of the following is used in the making of rock crushing machinery and helmets?
Q50. Metals are acting as…….
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