ICSE − Q & A

In the laboratory preparation of Ammonia  its written " A higher ratio by weight of the alkali used may counter act the loss by sublimation of ammonium chloride on heating in the solid state . " 
Here i think the Ammonium chloride due to sublimation has its qty decreased so shouldnt it be used more instead of alkali ?

Can explain the reason and if my understanding is correct .

P.S --> Its given in Viraf Dalal pg 179 if needed .
Thanks ! .

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Can anyone pls gve me the ans of this MCQ- What happens when potassium iodide solution is added to lead nitrate solution?
 
1. 		Curdy white precipitate is formed.
2. 		Yellow precipitate is formed.
3. 		Gelatinous white precipitate, which dissolves in excess of potassium iodide is formed.
4. 		Black precipitate is formed.