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Chemistry

Complete the blanks (i) to (v) in the passage given, using the following words. [Ammonium, reddish brown, hydroxyl, nitrogen dioxide, ammonia, dirty green, alkaline, acidic].
In the presence of a catalyst, nitrogen and hydrogen combine to give (i) ………….. gas. When the same gas is passed through water, it forms a soln. which will be (ii)………….. in nature, and will contain the ions (iii) ………….. and (iv) …………… . A (v) ………….. coloured ppt. of iron [II] hydroxide is formed when the above solution is added to iron [II] sulphate solution.

Ammonia

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Answer

(i) Ammonia

(ii) Alkaline

(iii) Ammonium

(iv) Hydroxyl

(v) Dirty green

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Name:
(a) the gas which is prepared by Haber's process.
(b) two gases which give dense white fumes with ammonia.
(c) one salt of ammonia in each case which is used in:
(i) dry cell (ii) explosives (iii) medicine
(d) an acidic gas which reacts with a basic gas liberating a neutral gas,
(e) a metallic chloride soluble in ammonium hydroxide,
(f) the gas obtained when ammonia burns in an atmosphere of oxygen without any catalyst,
(g) a nitride of a divalent metal which reacts with warm water liberating ammonia,
(h) an amphoteric oxide reduced by the basic gas,
(i) a white salt produced by an acidic gas and a basic gas,
(j) The gas that burns in oxygen with a green flame.
(k) The gas produced when excess ammonia reacts with chlorine.
(l) The white crystalline solid that is soluble in water. It liberates a pungent smelling gas when heated with sodium hydroxide solution.
(m) An alkaline gas which produces dense white fumes when reacted with HCl gas.
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