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12 ml of saturated solution .001gr of C...

12 ml of saturated solution .001gr of `CaCO_(3) were required in the titration of 100 ml of water to produce a good lether its degree of hardness is

A

100 ppm

B

120 ppm

C

60 ppm

D

80 ppm

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-HYDROGEN AND ITS COMPOUNDS-OBJECTIVE EXERCISE - 2B
  1. If excess of Ca(OH)2 is added to hard water in Clark's method

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  2. pH of the water coming out of cation exchange resin

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  3. 12 ml of saturated solution .001gr of CaCO(3) were required in the ti...

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  4. A sample of water contained 30ppm of MgSO4 . Its hardness is

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  5. 100Kg of a sample of water contained 6 g of MgSO4 . The degree of hard...

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  6. The physical constant which is less for water than for heavy water is

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  7. The temperature of heavy water is increased from 4^@C to 14^@C . Then ...

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  8. If 1 kg of water contains 12 mg of magnesium sulphate its degree of ha...

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  9. Assertion (A) : Heavy water is used as moderator in nuclear reactors. ...

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  10. Two samples of water A and B having concentration 16.2 pp m of Ca(HCO...

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  11. O2^(2-) is the symbol of the ion

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  12. H2O2 is obtained by adding dil H2SO4 to

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  13. In the preparation of H2O2 from BaO2 , phosphoric acid is preferred t...

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  14. In auto oxidation preparation of H(2)O(2) the oxidizing agent is

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  15. Destabiliser of hydrogen peroxide is

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  16. In H2O2 the degree of hydrogen bonding is

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  17. 'H(2)O(2)' ---> 2H + O(2) + 2e The above equation represents the follo...

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  18. As an oxidising agent, hydrogen peroxide reacts rapidly in

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  19. H2O2 + H2O to H2O^(+) toHO2^- This reaction indicates

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  20. H2O2 oxidises the following

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