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If 11.1 mg of CaCl2 and 12mg of MgSO4 a...

If 11.1 mg of `CaCl_2` and 12mg of `MgSO_4` are present in 2 litres of water, what is its hardness (in grams of `CaCO_3`/ppm)?

A

5

B

10

C

15

D

20

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-HYDROGEN AND ITS COMPOUNDS-OBJECTIVE EXERCISE - 3
  1. The value of ........ is less for D2O compared to that of H2O

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  2. 1 kg of a sample of water contained 222 mg of CaCl2 and 219 mg of Mg(...

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  3. If 11.1 mg of CaCl2 and 12mg of MgSO4 are present in 2 litres of wate...

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  4. 50 ml of water sample requires 6 ml of soap solution to produce a good...

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  5. In the following reactions which is deuterolysis I) AlCl3 + 3D2O to...

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  6. 5 kg of water contain 24 mg of MgSO4 and 32.4 mg of Ca(HCO3)2 . The t...

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  7. An MgCl2 aqueous solution is 10^(-3) molar. The hardness of water is

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  8. Hardness of a water sample is 150 ppm. Its hardness is due to only cal...

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  9. Last molecule of H(2)O is removed from H(2)O(2) by

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  10. Electrolysis of X gives Y at anode. Vacuum distillation of Y gives H(2...

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  11. The reaction of H2O2 with X does not liberate gaseous product. Which o...

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  12. 6.8 gm of H2O2 is present in 500 ml of an aqueous solution. When 10 ml...

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  13. The number of moles of H(2)O(2) needed to reduce 2 mole of KMnO(4) in ...

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  14. Which of the following is not correct ?

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  15. Which one of the following is reduced by H2O2 in basic medium

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  16. The number of moles of electrons involved in the manufacture of 1 mole...

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  17. The volume occupied by O2 gas at STP which is obtained by the decomp...

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  18. The volume of perhydrol which on decomposition gives 2 lit ofO2 gas a...

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  19. The weight of H2O2 present in 70 ml of 6% (w/v) H2O2 solution is

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  20. 100cm^3 of a given sample of H2O2 gives 1000cm^3 of O2 at S.T.P. T...

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