Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas.
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A solution of a substance ‘X’ is used for white washing.
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(i) Name the substance ‘X’ and write its formula.(ii) Write the reaction of the substance ‘X’ named in (i) above with water.
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Class 10 science
3 years
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Write a balanced chemical equation with state symbols for the following reactions.
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(ii) Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.
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Class 10 science
3 years
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Write a balanced chemical equation with state symbols for the following reactions.
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(i) Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.
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Class 10 science
3 years
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Write the balanced equation for the following chemical reactions.
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(i) Hydrogen + Chlorine → Hydrogen chloride(ii) Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride(iii) Sodium + Water → Sodium hydroxide + Hydrogen
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Class 10 science
3 years
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Why should a magnesium ribbon be cleaned before it is burnt in air?
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