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Questions  >>  CBSE XII  >>  Chemistry  >>  p-Block Elements
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Ammonia can be dried by :

$\begin{array}{1 1} CaO \\ Conc.H_2SO_4 \\ P_4 P_{10} \\ Cacl_2 \end{array} $

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CaO, concn H2 SO4, P4 O10 ,,
 
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The Ammonia can be dried by Anhydrous CaCl2. This type of questions was also given in higher studies exam like IIT JAM as well. And to make this question tricky they put both CaCl2 and Anhydrous CaCl2 in the question. The correct answer was Anhydrous CaCl2. The term Anhydrous means a compound with no water. In the process of drying Ammonia, you can't use ordinary CaCl2 because the reaction form ammoniates in the process.

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