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Number of moles of CaO required to remov...

Number of moles of CaO required to remove hardness from 1000 litre water having 324 ppm of calcuim bicarbonate and 74.5 ppm of potassium chloride is :

A

8

B

4

C

3

D

2

Text Solution

Verified by Experts

The correct Answer is:
D
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RESONANCE-EQUIVALENT CONCEPT & TITRATIONS-APSP (Part-I)
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  2. In the conversion NH(2)OH rarr N(2)O, the equivalent weight of NH(2)OH...

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  3. Number of moles of CaO required to remove hardness from 1000 litre wat...

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  4. A 5.0 mL of solution of H(2)O(2) liberates 0.508 g of iodine from acid...

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  5. When hypo solution is added to KMnO(4) solution then

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  8. The equivalent mass of MnSO(4) is half its molecular mass when it is c...

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  9. An aqueous solution of 6.3 g oxalic acid dihydrate is made up to 250 m...

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  10. In the reaction H(2)O(2)^(18)+O(3) to water + oxygen, radioactivity w...

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  13. The normality of orthophosphoric acid having purity of 70% by weight...

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  14. The normality of mixture obtained by mixing 100 mL of 0.2 M H(2)SO(4) ...

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  15. The reagent commonly used to determine hardness of water titrimetrical...

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  16. 40 mL of 0.05 M solution of sodium sesquicarbonate (Na(2)CO(3).NaHCO(...

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  17. In the following reaction 2MnO(4^(-))+5H(2)O(2)^(18)+6H^(+)rarr2Mn^(2+...

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  18. One gram equimolecular mixture of Na(2)CO(3) and NaHCO(3)is reacted wi...

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  19. Which of the following is not a redox reaction ?

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  20. Equivalent weight of chlorine molecule in the equation is : 3Cl(2)+6...

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