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Hardness of water is due to dissolved im...

Hardness of water is due to dissolved impurities of

A

calcium and magnesium salt

B

barium and magnesium salts

C

calcium and strontium salts

D

sodium and potasium salts

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The correct Answer is:
A
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CENGAGE CHEMISTRY-HYDROGEN, WATER AND HYDROGEN PEROXIDE-Exercises (Single Correct)
  1. Which of the following represents the heavy water?

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  2. H2O2 cannot act as

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  3. Hardness of water is due to dissolved impurities of

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  4. H2O2 is reduced by

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  5. When water is dropped over sodium peroxide, the colourless gas produce...

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  6. In which of the following reaction dihydron acts as an oxidising agent...

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  7. Which of the following metal does not produce dihydrogen gas with dilu...

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  8. Which oxide cannot be reduced by H2?

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  9. Ortho- and para-hydrogen differ in

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  10. Nascent hydrogen consists of

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  11. 30-volume hydrogen peroxide means

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  12. The compound which gives H2O2 on treatment with dilute acid is

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  13. When a sample of hard water is passed through the layer of sodium zeol...

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  14. Hydrolysis of one mole of peroxodisulphuric acid produces acid produce...

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  15. Barium peroxide reacts with phosphoric acid to produce barium phosphat...

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  16. One part of heavy water is present in X parts of ordinary water. Here ...

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  17. The hydride ion H^(ɵ) is a stronger base than hydroxide ion. Which of ...

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  18. The volume strength of 1*5 N H(2)O(2) solution is

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  19. Which of the following pair of substances will not evolve H2 gas

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  20. H2 molecule has two electrons and two nuclei. In which form of hydroge...

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