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Assertion (A) Permanent hardness of w...

Assertion (A) Permanent hardness of water is removed by treatment with washing soda.
Reson (R) Washing soda reacts with soluble magnesium and calcium sulphate to from insolube carbonates.

A

only Il & Ill

B

I, Il & Ill

C

only Ill

D

Only I & Il

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Assertion : Permanent hardness of water can be removed by using washing soda. Reason : Washing soda reacts with soluble calcium and magnesium chlorides and sulphates in hard water to form insoluble carbonates.

Permanent hardness can be removed by boiling water with washing soda.

What happens when hard water is treated with washing soda?

Give balanced equations to show how - Permanent hardness in water can be removed by addition of washing soda

A : Permanent hardness of water is due to the presence of chlorine or sulphates of Ca or Mg. R : Permanent hardness is removed by boiling

Assertion (A) : Temporary hardness in water is due to the presence of chlorides of magnesium. Reason (R) :Temporary hardness is removed by Clark's method.

Assertion (A) : Temporary hardness in water is due to the presence of chlorides of magnesium. Reason (R) :Temporary hardness is removed by Clark's method.

What will the concentration of [Ca^(+2)] in a sample of 1 litre hard water if after treatment with washing soda 10 g insoluable CaCO_(3) is precipitated.

Assertion (A): Calcium and magnesium oxides are not reduced by carbon. Reason (R ): Calcium and magnesium oxides react with carbon to form their respected carbides.

One litre hard water contains 12.00 mg Mg^(2+) millieqivalent of washing soda required to remove its hardness is

AAKASH INSTITUTE ENGLISH-TEST 5-EXAMPLE
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  3. Assertion (A) Permanent hardness of water is removed by treatme...

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  7. Which of the following is electron deficient-hydride?

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  8. Match the Column-I to Column-II

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  9. Choose the incorrect statement.

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  10. Equivalent mass of KMnO4 in acidic and basic medium respectively [M = ...

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  11. Identify the compound in which 'S' has highest oxidation state.

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  12. Given : Identify the cell which will give maximum EMF^o

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  13. What is the average oxidation state of oxygen In S2O8^(2-)

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  14. MnO(4)^(2-) undergoes disproportionation reaction in acidic medium but...

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  15. Identity the disproportionation reaction.

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  16. Which of the following arrangements represent increasing oxidation num...

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  17. In which of the following compounds, an element exhibits two different...

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  18. Consider the following reactions. I. 2PbO + 4HCl to 2PbCl2 + 2H2O ll....

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  19. Choose the non-redox reaction.

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  20. The most basic oxide among the following is

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