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Q1. By which of these processes temporary hardness of water can be removed?
Q2. The purest form of water is…………….
Q3. Pure water is a ....... conductor of electricity.
Q4. Water contains hydrogen and oxygen in the ratio ...... by weight.
Q5. Which of the following is generally added as an adulterant to Chilli Powder?
Q6. Of the following, which one is added to tea dust as an adulterant?
Q7. Adulteration of Edible oil with mineral oil generally affects the…..
Q8. In which of the following Tamarind seed powder is used as a common adulterant?
Q9. Adulteration of Kesari Dhal with Toor Dhal generally affects the……..
Q10. Bakelite is an example of......
Q11. Glucose is a good example of........
Q12. Trinitro toluene is a good example of……….
Q13. Which one of the following metal present as a pollutant in air affects the brain?
Q14. Excessive fluoride ions present in drinking water normally causes….
Q15. Which of the following is the Carbon compound of Coal Tar that is used in dry cleaning works?
Q16. Of the following which one is the characteristic of an organic compound?
Q17. CFC are derived from which of the following?
Q18. What is the term for the reaction between an alcohol and an acid?
Q19. The source of carbon monoxide pollutant is........
Q20. What is Pyrolysis?
Q21. By which method poisonous gases can be removed........
Q22. The medium that gets affected by the pollutant is known as…..
Q23. Which enzyme is used in the conversion of ethanol to vinegar?
Q24. From among the following which one is used as a fuel in spirit lamp?
Q25. Alcohols have high boiling point than ..........
Q26. 50% butane and 50% propane mixture is known as........
Q27. Urea is a good example for………
Q28. Of the following elements which one is essential for the plants to fight diseases?
Q29. Of the following, which one is non biodegradable?
Q30. Soft soaps are the salts of .......metal containing fatty acids
Q31. Which among the following is used for identifying gas leakages in LPG gas cylinders?
Q32. Among the following which one is the important nutrient of the soil?
Q33. The main constituents of Liquified Petroleum Gas (LPG) are……
Q34. Ethy alcohol is.......
Q35. The petro-chemical used to prepare soaps and inks is…..
Q36. Enzymes are complex organic substances secreted by…….
Q37. Isomers have the same……..formula/point.
Q38. Among the following which one is an organic compound?
Q39. DDT is an example of ..... Type of pollutant
Q40. Of the following which is/are called primary pollutants?
Q41. Of the following which /one is/are biodegradable pollutants?
Q42. Main reason for pollution is .....
Q43. Of the following which one is used in the making of photographic films and rayons?
Q44. Of the following which one is used as a wood preservative manufactured with acetic acid?
Q45. The existence of dimer in acetic acid is due to......
Q46. Ethers do not react with......
Q47. The ............. nature has made ether as a versatile solvent.
Q48. Among the following which one is formed when diethyl ether reacts with water in the presence of mineral acid?
Q49. The oxygen atom present in ether is ........
Q50. Of the following which one is used as an anaesthetic?
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