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Why do living organisms have narrow pH r...

Why do living organisms have narrow pH range ?

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BEYOND PUBLICATION-ACIDS,BASES AND SALTS-EXERCISE
  1. Why do living organisms have narrow pH range ?

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  2. The colour of methyl orange indicator in acidic medium is

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  3. The colour of phenolphthalein indicator in basic solution is

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  4. Colour of methyl orange in alkali conditions

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  5. A solution turns red litmus blue, its pH is likely to be

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  6. One of the following solutions reacts with crushed egg shells to give ...

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  7. If a base dissolves in water, by what name is it better known?

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  8. Which of the following substances when mixed together will produce tab...

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  9. What colour would hydrochloric acid (pH = 1) turn universal indicator ...

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  10. Which one of the following types of medicines is used for treating ind...

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  11. What gas is produced when magnesium is made to react with hydrochloric...

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  12. Does the bulb glow in acids ?

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  13. Which measurements are able to construct a triangle?

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  14. What is the chemical name of baking Soda ?

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  15. What is a neutralization reaction? Give two examples

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  16. How does the flow of acid rain into a river make the survival of aquat...

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  17. Why does tooth decay start when the pH of mouth is lower than 5.5?

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  18. Which of the following is the most accurate way of showing neutralizat...

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  19. Why is universal indicator a better one Than litmus paper ?

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  20. Which of the following is used for making toys ?

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  21. Brine solution is called

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