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Question
What are the important precautions?
One Line Answer
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Solution
Important precautions are -
(i)The lower end of thistle funnel must be dipped below the concentrated H2SO4.
(ii)Temperature should be maintained nearly 200°C because at higher temperature -
(a) The apparatus may break
(b) Fuel is wasted.
(c) Sodium sulphate formed in the reaction forms a crust on the surface which is difficult to remove.
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