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The test tube I contains sodium bicarbon...

The test tube I contains sodium bicarbonate solution whereas test tube II contains lemon juice. On introducing pH paper strips in both the solutions, it is observed that the pH paper turns:

A

red in I and blue inII

B

blue in both

C

blue in I and red in II

D

red in I and pink in II

Text Solution

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The correct Answer is:
D
NA
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LAKHMIR SINGH & MANJIT KAUR-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. A student was given three solution marked X,Y and Z and asked to arran...

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  2. When the strip of pH paper was put in a given solution the pH paper ch...

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  3. The test tube I contains sodium bicarbonate solution whereas test tube...

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  4. No observable change is noticed when dilute hydrochloric acid is added...

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  5. A student took four test tubes I,II,III and IV containing aluminium su...

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  6. 2mL of ethanoic acid was taken in each of test tube I and test tube II...

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  7. Four students A,B,C and D were asked by their teacher to arrange the s...

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  8. On adding a few drops of universal indicator solution to three unknown...

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  9. A few drops of ethanoic acid were added to solid sodium carbonate. The...

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  10. Did Döbereiner’s triads also exist in the columns of Newlands’ Octaves...

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  11. What were the limitations of Döbereiner’s classification?

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  12. What were the limitations of Newlands’ Law of Octaves?

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  13. Use Mendeléev’s Periodic Table to predict the formulae for the oxides ...

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  14. Besides gallium, which other elements have since been discovered that ...

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  15. What were the criteria used by Mendeléev in creating his Periodic Tabl...

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  16. Why do you think the noble gases are placed in a separate group?

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  17. How could the Modern Periodic Table remove various anomalies of Mendel...

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  18. Name two elements you would expect to show chemical reactions similar ...

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  19. Name (a) three elements that have a single electron in their outermo...

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  20. (a) Lithium, sodium, potassium are all metals that react with water to...

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