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Name the gas that can readily decolourise acidified KMnO4 solution:

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Important Questions on The p-Block Elements

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The oxoacid of sulphur that does not contain bond between sulphur atom is:
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The number of S=O and S-OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are:
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The element that combines with oxygen to give an amphoteric oxide is-
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Which of the following oxoacid of sulphur has OO linkage?
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In preparation of sulphuric acid from Sulphur dioxide in lead chamber process. What substance is used as a catalyst?
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In which pair of ions do both the species contain S-S bond?
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When SO2 gas is passed through aqueous Na2CO3, the product(s) formed is(are):
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On electrolysis of dil. sulphuric acid using Platinum Pt electrode, the product obtained at anode will be
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Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds, but not by the other?
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The structure of Marshall's acid among the following is:
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The correct sequence of decreasing number of π -bonds in the structure of H2SO3, H2SO4 and H2S2O7 is: