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A student was given three samples contai...

A student was given three samples containing hydrochloric acid, sodium bicarbonate solution and water in test tubes I, II and III respectively. On dipping a pH paper in them he observed that the colour turned orange in I, blue in II, and green in III. If arranged in increasing order of their pH it would be

A

Gas is evolved vigrously in both

B

Gas is evolved vigorously in beaker I and not in the beaker II

C

Gas is evovled vigorusly in beaker if the not in the beaker I

D

No gas is evolved in either, of the two beakers.

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MODERN PUBLICATION-ACID, BASES AND SALTS-EXERCISE
  1. Label 1 and 2 in the given figure.

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  2. On putting a few drops of an unknown liquid on the pH strip, the colou...

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  3. A student was given three samples containing hydrochloric acid, sodium...

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  4. Which of the following chemical properties are shown in dilute hydroch...

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  5. On adding methyl orange to a solution A it imparts a pink colourand on...

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  6. Quick lime is

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  7. Identify the colour changes in pH paper when a drop of a sample, which...

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

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  9. If HCl is added to distilled water, the pH of new solution will be:

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  10. Two solutions A and B have pH of 6 and 9 respectively. Which solution ...

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  11. The pH value of a sample of hydrochlroic acid is 2, pH value of this s...

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  12. The products of reaction between zinc and sodium hydroxide solution ar...

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  13. Find the mode of the following distribution :

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  14. Rachel, an engineering student, was asked to make a model shaped like ...

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  15. Complete the following reactions: NaHCO3overset(Heat)rarr

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  16. Complete the following reactions: CaClO2+CO2rarr

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  17. You are given two solution A and B having pH 1 and 6. which of these h...

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

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  19. Which colour is produced when a drop of phenophthalein is added to HCl...

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  20. Which colour is produced when a drop of phenophthalein is added to NaO...

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