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A solution does not change the colour of litmus paper . What would be the pH value of the solution ?

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Which of the following solutions will not change the colour of blue litmus paper to red? 1. Acid solution 2. Base solution 3. Common salt solution Select the correct answer using the code given below.

(a) How is pH paper used to find the pH of a solutions? (b) The pH value of water is 7. What will be the pH value of (i) aqueous solution of sodium hydroxide and (ii) dil HCl.

Dry hydrogen chloride gas does not change the colour of dry litmus paper. Why?

(a). What is produced if an acid is added to a base? (b). Why does dry HCl gas not change the colour of dry litmus paper? (c). What colour does phenolphthalein indicator tum when added to an alkali (such as sodium hydroxide)?

(a) How is pH paper used to find the pH of a solution? (b) The pH value of water is 7. What will be the pH value of (i) aqueous solution of sodium hydroxide and (ii) dil. HCl.

BHARATI BHAWAN (ENGLISH)-PRACTICALS -EXERCISE
  1. A solution does not change the colour of litmus paper . What would be ...

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  2. A true solution is

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  3. which of the following will give a true solution when dissolved in wat...

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  4. when a small quantity of common salt is added to water

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  5. which of the following will give a true solution when dissolved in wat...

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  6. A mixture of chalk powder and water makes a

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  7. When a true solution is filtered

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  8. A true solution of cane sugar is prepared by dissolving

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  9. which of the following is least soluble in water ?

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  10. What is the substance called when it is present in a solution in lesse...

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  11. Which of the following is an example of a homogeneous mixture ?

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  12. Milk provides an example of a

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  13. The size of colloidal particle is between

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  14. Which of the following statements is correct regarding the particles o...

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  15. A suspension is

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  16. The particles of a substance suspended in a suspension can be separate...

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  17. When sodium chloride is dissolved in water the solution obtained is

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  18. Which of the following statements is correct regarding the colloid of ...

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  19. Which of the following pairs can produce a colloidal solution ?

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  20. What is especially observed when a beam of light is passed through a c...

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  21. A mixture of sand and sugar is an example of a

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