Name
(a) a black metallic oxide which reacts with hydrochloric acid to give a coloured solution.
(b) two colourless gases, which when mixed produce a white solid.
(c) two gases which chemically combine to form a liquid.
(d) a chloride which is soluble in excess of ammonium hydroxide.
(e) the chemical in which gold can be dissolved.
(f) the experiment which demonstrates that hydrogen chloride is soluble in water.
(g) the gas produced when chlorine water is exposed to sunlight.

Q. Identify the following : [5 MARKS]
(a) black metallic oxide which reacts with hydrochloric acid to give a coloured solution.
(b) two colourless gases which when mixed produce a white solid.
(c) two gases which chemically combine to form a liquid.
(d) a chloride which is soluble in excess of ammonium hydroxide.
(e) the chemical in which gold can be dissolved

Q.

Name the following:
(i) Acid present in the stomach of mammals.
(ii) Drying agent used to dry hydrogen chloride.
(iii) Salt obtained by heating sodium chloride with concentrated sulphuric acid below 200 degree celsius.
(iv) Gas that yields dense white fumes when mixed with hydrogen chloride.
(v) Two solution that yield white precipitates, when treated with hydrogen chloride or hydrochloric acid.
(vi) Gas obtained by treating metals with hydrochloric acid.
(vii) Gas obtained by treating ferrous sulphide with hydrochloric acid.
(viii) Five oxidizing agents that liberate chlorine from concentrated hydrochloric acid.
(ix) Acid used to extract glue from bones.
(x) A chloride which is soluble in excess of ammonium hydroxide.
(xi) A greenish yellow gas.
(xii) A chemical in which gold can be dissolved.
(xiii) A metallic oxide which reacts with hydrochloric acid to give a coloured solution.
(xiv) Two colourless gases which when mixed produce a white solid.

Q.

(a) Name two gases which combine chemically to form a solid.
(b) Name a chloride which is soluble in excess of ammonium hydroxide.
(c) How will you show that hydrochloric acid contains both hydrogen and chlorine (other than by electrolysis)?
(d) Complete and balance the following equations:
KMnO₄ + HCl $\stackrel{}{\to }$ _______ + _______ + ________ + 8H ₂O

Q.

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 ammoia 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 acid gas and a basic gas.

Q.

Name :

(a) a metallic hydroxide soluble in excess of $N{H}_{4}OH$.
(b) a metallic oxide soluble in excess of caustic soda solution. (c) a strong alkali.
(d) a weak alkali.
(e) two colourless metal ions.
(f) two coloured metal ions.
(g) a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
(h) two bases which are not alkalis but dissolve in strong alkalis. (i) a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
(j) a colourless cation, not a representative element.