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A substance X is formed when sulphur is burnt in oxygen. When X is dissolved in water another substanceYis formed.7.a) Name X and Yb) Write word equation for formation of Y from X.c) What is observed when blue litmus is dipped in Y? |
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Answer» X -> Sulphur dioxide (SO2)Y-> Sulphurous acid SO2 + H2O-> H2SO3 Blue litmus, when dipped in sulphurous acid, turns into red litmus |
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