Permanent hardness can be removed by add...

Permanent hardness can be removed by adding

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MODERN PUBLICATION-HYDROGEN-REVISION EXERCISES (Assertion Reason Questions)

H2S reacts with O2 to form
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Assertion (A): NaCl is less soluble in heavy water than in ordinary wa...
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Atomic hydrogen combaines with almost all elements but molecular ...
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Assertion : Heavy water is widely used as a moderator in nuclear react...
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Assertion : H(2)O(2) is used as a bleaching agent for delicate mater...
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Assertion NH(3) is an electron precise hydride. Reason : NH(3) has...
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Which can act as an oxidising as well as a reducing agent ?
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Bleaching action of SO(2) is due to :
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Ice floats on water because
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Permanent hardness can be removed by adding
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