An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?
- ABaking powder
- BHydrochloric acid
- CAmmonium hydroxide solution
- DLime
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What is the molecular mass of $NaOH$?
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View SolutionExplain why:
$(a)$ the colour of copper sulphate crystals changes on heating?
$(b)$ baking soda acts as an antacid?
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$(a)$ the colour of copper sulphate crystals changes on heating?
$(b)$ baking soda acts as an antacid?
$(c)$ an acid should be added to water while diluting?
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| $(A)$ Bleaching powder | $(i)$ Preparation of glass |
| $(B)$ Baking soda | $(ii)$ Production of $H_2$ and $Cl_2$ |
| $(C)$ Washing soda | $(iii)$ Decolourisation |
| $(D)$ Sodium chloride | $(iv)$ Antacid |
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$(b)$ Write the chemical equation involved in the preparation of sodium hydroxide. Name the process.
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