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Chemistry Online Quiz

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  1. Answered
  2. Review
  1. Question 1 of 50
    1. Question

    Catalytic converters are generally made from

  2. Question 2 of 50
    2. Question

    The soft silvery metallic element which ionizes easily when heated or exposed to light and is present in atomic clocks is

  3. Question 3 of 50
    3. Question

    The mercury and sodium street lamps light up because of

  4. Question 4 of 50
    4. Question

    The green colour seen in firework displays is due to the chloride salt of

  5. Question 5 of 50
    5. Question

    Most commonly used bleaching agent is

  6. Question 6 of 50
    6. Question

    Peroxyacetyl nitrate is a

  7. Question 7 of 50
    7. Question

    Hydrogen peroxide is an effective sterilizing agent. Which one of the following product results when it readily loses active oxygen?

  8. Question 8 of 50
    8. Question

    What happens when a drop of glycerol is added to crushed KMnO₄ spread on a paper?

  9. Question 9 of 50
    9. Question

    Which of the following can be found as pollutants in the drinking water in some parts of India?
    1. Arsenic, 2. Sorbitol, 3. Fluoride, 4. Formaldehyde, 5. Uranium
    Select the correct answer using the code given below.

  10. Question 10 of 50
    10. Question

    Photo chemical smog is a resultant of the reaction among

  11. Question 11 of 50
    11. Question

    When a helium atom loses an electron it becomes

  12. Question 12 of 50
    12. Question

    Heavy metals got their name because compared to other atoms they have

  13. Question 13 of 50
    13. Question

    The purest form of Iron is:

  14. Question 14 of 50
    14. Question

    Combustion is a

  15. Question 15 of 50
    15. Question

    Which of the following is not a form of carbon?

  16. Question 16 of 50
    16. Question

    Natural radioactivity was discovered by

  17. Question 17 of 50
    17. Question

    Which of the following is used in pencils?

  18. Question 18 of 50
    18. Question

    The rusting of metal iron in air needs both

  19. Question 19 of 50
    19. Question

    Acid rain is caused by

  20. Question 20 of 50
    20. Question

    The process of improving the quality of rubber by heating it with sulphur is called

  21. Question 21 of 50
    21. Question

    The pollutant responsible for ozone holes is

  22. Question 22 of 50
    22. Question

    The alkaloid naturally found in coffee, cocoa and cola nut is

  23. Question 23 of 50
    23. Question

    Which of the following is not a noble gas?

  24. Question 24 of 50
    24. Question

    Kelp is

  25. Question 25 of 50
    25. Question

    Ink is prepared from

  26. Question 26 of 50
    26. Question

    Formic acid is produced by

  27. Question 27 of 50
    27. Question

    Chemical decomposition of an organic compound by water is called as

  28. Question 28 of 50
    28. Question

    Which of the following is not a nitrogenous fertilizer?

  29. Question 29 of 50
    29. Question

    CaC₂ on treatment with water gives

  30. Question 30 of 50
    30. Question

    The percentage of nitrogen present in ammonium sulphate is

  31. Question 31 of 50
    31. Question

    Stains of rust on clothes can be removed by

  32. Question 32 of 50
    32. Question

    Ethanol containing 5% water is known as

  33. Question 33 of 50
    33. Question

    Transboundary pollution (or) Acid rain is caused by

  34. Question 34 of 50
    34. Question

    The natural disaster in which carbon dioxide suddenly erupts from a deep lake water is known as

  35. Question 35 of 50
    35. Question

    Dry Ice is nothing but

  36. Question 36 of 50
    36. Question

    Which one of the following is obtained as slag in a blast furnace?

  37. Question 37 of 50
    37. Question

    When H₂ gas is allowed to expand from a region of high pressure to a region of low pressure the temperature of the gas

  38. Question 38 of 50
    38. Question

    In the industrial production of vegetable ghee, the process involved is

  39. Question 39 of 50
    39. Question

    Which of the following weeds has been found useful to check water pollution caused by industrial affluents?

  40. Question 40 of 50
    40. Question

    Pyroligneous acid obtained from wood contains

  41. Question 41 of 50
    41. Question

    Which of the following pairs is correctly matched?

  42. Question 42 of 50
    42. Question

    Which is not a correct statement?

  43. Question 43 of 50
    43. Question

    Which of the following could be used as fuel in propellant or rockets?

  44. Question 44 of 50
    44. Question

    The addition of gypsum to portland cement helps in

  45. Question 45 of 50
    45. Question

    The Refrigerant ‘FREON’ is

  46. Question 46 of 50
    46. Question

    Hard steel contains

  47. Question 47 of 50
    47. Question

    Cement is formed by strongly heating a mixture of

  48. Question 48 of 50
    48. Question

    Glass is a

  49. Question 49 of 50
    49. Question

    The temperature of oxy-acetylene flame is around

  50. Question 50 of 50
    50. Question

    The gas that is used in the manufacture of vanaspati ghee is

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