Give reasons : 1. Ammonia is not collected through downward displacement of water.
2. Ammonia is collect by the downward displacement of air.
3. Carbon dioxide is used in fire extinguisher.
4. H₂SO₄ is not used in the preparation of CO₂.
5. The opening of hard glass test tube is slanted down during laboratory preparation of ammonia gas
6. Carbon dioxide doesn't support in burning but Mg burns in it.

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wher is the rest of the question

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.