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What is universal indicator?...

What is universal indicator?

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A student tested some solutions with universal indicator paper and wrote down their pH values are: 1,5,7 and 13 but the forgot to write the names of the solutions. Can you help him by matchicng the pHs to the correct solution:

What is the colour of universal indicator in very basic solutions?

Fill ups The colour of universal indicator in very acidic solution is…………….. .

When a few drops of universal indicator were added to a dilute solution of HCl, it is observed that the colour of the solution changes from

When a few drops of universal indicator were added to a dilute solution of HCl, it is observed that the colour of the solution changes from

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MODERN PUBLICATION-ACID, BASES AND SALTS-EXERCISE
  1. A piece of zinc metal is dropped in dilute solution of hydrochloric ac...

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  2. Name the two main consituents of baking powder.

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  3. Name the two main consituents of baking powder.

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  4. Tooth enamel is one of the hardest substances in our body. How does it...

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  5. What is the meant by water by crystallisation in a substance? How woul...

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  6. Complete the following reactions: NaCl+CO2+NH3+H2Orarr……………+…………

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  7. Compelte the following reactions: CaSO4. 2H2O rarr

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  8. Compelte the following reactions: CaCO3+H2SO4(dil)rarr

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  9. What is universal indicator?

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  10. Solution A gives pink colour when a drop of phenopthalein indicator is...

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  11. Name one salt whose solution has pH more than 7 and one salt whose has...

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  12. Hydrated copper sulphate on heating changes to

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  13. An aqueous solutons turns red litmus solutoin blue. Excess addition of...

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  14. When a few drops of universal indicator were added to a dilute solutio...

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  15. Dilute hydrochloric acid is added to sodium carbonate. It is observed ...

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  16. Which gas is produced when Al metals reacts wth NaOH solution?

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  17. What will be the colour produced when a drop of pehnolphthalein is add...

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  18. What will be the colour produced when a drop of pehnolphthalein is add...

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  19. What will be the colour produced when a drop of pehnolphthalein is add...

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  20. What will be the colour produced when a drop of pehnolphthalein is add...

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