Question

Question 1: The diagram below shows the set up for the laboratory preparation of a pungent alkaline gas. [6X1/2=3M] I] Name the gas collected in the jar. Ii] Give the chemical formula of each component of the mixture ‘x’. Iii] Identify the substance ‘y’ and write the function of this substance ‘y’. Iv] State how is the gas collected? Why is this gas not collected on water? V] State how will you find out that the jar is full of the pungent gas? Vi] Why can’t anhydrous calcium chloride be used in place of ‘y’? VII] Give the balanced chemical equation for the above preparation. [1M] Question 2: Give reasons for the following. [5m] I] A bottle of liquor ammonia should be opened very carefully only after cooling it. Ii] Aqueous ammonia acts as a weak base. Iii] Ammonium nitrate and ammonium nitrite are not used in laboratory preparation of ammonia gas. Iv] Calcium hydroxide is preferred over caustic soda for preparation of ammonia gas. V] Inverted funnel arrangement is used to dissolve ammonia gas in the laboratory

Answer 1

Answer:

only for 5 points .............

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Answer 2

Answer:

Are you ali naqi of class 10 i am your old class mate Akshad of 7 B