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Methyl orange and Phenolphthalein are in...

Methyl orange and Phenolphthalein are indicators. Collect the information about their colour change in Acid and Basic solutions.

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VGS PUBLICATION-BRILLIANT-ACIDS AND BASES-EXERCISE
  1. Grapes, Palm oil, Amla (emblica fruit) and Urine are put before you. Y...

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  2. Write the names of some substances that contain bases that we use in o...

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  3. Methyl orange and Phenolphthalein are indicators. Collect the informat...

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  4. What sort of food do we eat ?

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  5. What kind of tastes do food substances we eat have?

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  6. Do you find any difference in the taste of a raw and a ripe fruit ?

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  7. Do substances change their taste when cooked ?

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  8. Add sugar to lemon juice. What change do you notice in the taste ?

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  9. Is there any difference in the taste of lemon juice without sugar ?

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  10. Do substances change colour when added to other substances ?

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  11. Have you observed any change when lime water is added to turmeric ?

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  12. How do you prepare lime water ? In what way is this useful to you in d...

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  13. You are given a substance. What do you do to identify it as an acid, b...

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  14. Take things which are sour in taste and used as food. Eg. Curd, lemon ...

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  15. Burning sensation of ant bite is caused by……………

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  16. How is it possible to make believe Blood comes out of a lemon ?

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  17. Why are the inner sides of vessels made up of brass and copper coated ...

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  18. Why are pickles, jams, jellies preserved in glass, porcelein and plast...

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  19. Ravi said that acid rains are causing damage. Do you agree with his st...

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  20. You are given Hydrochloric acid. How can you make it into a solution w...

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