Gas is evolved in which of the chemical reaction?
[1mark]
A. Zinc reacting with dilute sulphuric acid
B. Iron dropped into copper sulphate solution.
C. Silver Nitrate is added to a Sodium Chloride solution.
D. Ammonia Gas reacting with Hydrochloric Acid.

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Solution

Correct answer: Option A. Zinc reacting with dilute sulphuric acid

Zinc on reaction with dilute sulphuric acid produces zinc sulphate and hydrogen gas.

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Similar questions

What do you observe when

(a) dilute sulphuric acid is added to granulated zinc ?

(b) a few pieces of iron are dropped in a blute solution of sodium chloride ?

(d) ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.

(e) solid lead nitrate is heated ?

(f) when dilute sulphuric acid is added to barium chloride solution ?

Q. The questions (i) to (v) refer to the following salt solutions listed (a) to (f):
(a) Copper nitrate
(b) Iron (II) sulphate
(c) Iron (III) chloride
(d) Lead nitrate
(e) Magnesium sulphate
(f) Zinc chloride

(i) Which two solutions will give a white precipitate when treated with dilute hydrochloric acid followed by barium chloride solution?
(ii) Which two solution will give a white precipitate when treated with dilute nitric acid followed by silver nitrate solution?
(iii) Which solution will give a white precipitate when either dilute hydrochloric acid or dilute sulphuric acid is added to it?
(iv) Which solution becomes a deep/inky blue colour when excess of ammonium hydroxide is added to it?
(v) Which solution gives a white precipitate with excess ammonium hydroxide solution?

2.State one appropriate observation for each of following :

(i) Concentrated sulphuric acid is added drop wise to a crystal of hydrated copper sulphate.

(ii) Excess of chlorine gas is reacted with ammonia gas.

(iii) Copper sulphide is treated with dilute hydrochloric acid.

(iv) A few drops of dilute hydrochloric acid are added to silver nitrate solution,followed by addition of ammonium hydroxide solution.

(v) Electricity is passed through molten lead bromide.

Q. Write balanced chemical equations for each of the following reactions
1. Carbon dioxide Marble dissolves in hydrochloric acid to give calcium chloride water and carbon dioxide
2. Silver nitrate reacts with copper to produce copper nitrate and silver metal
3. Carbon dioxide gas is passed over lime water to form a precipitate of calcium carbonate
4. Aluminium Sulphate acts with Sodium Hydroxide to form precipitate of aluminium hydroxide and the solution of sodium sulphate
5. Barium Chloride solution reacts with sulphuric acid to form precipitate of Barium sulphate and solution of hydrochloric acid.

Q. Balance the chemical equation by including the physical states of the substances for the following reactions.

a) Barium chloride and sodium sulphate aqueous solutions react to give insoluble Barium sulphate and an aqueous solution of sodium chloride.

b) Sodium hydroxide reacts with hydrochloric acid to produce sodium chloride and water.

c) Zinc pieces react with dilute hydrochloric acid to liberate hydrogen gas and forms zinc chloride

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Gas is evolved in which of the chemical reaction? [1mark] A. Zinc reacting with dilute sulphuric acid B. Iron dropped into copper sulphate solution. C. Silver Nitrate is added to a Sodium Chloride solution. D. Ammonia Gas reacting with Hydrochloric Acid.

Correct answer: Option A. Zinc reacting with dilute sulphuric acid Zinc on reaction with dilute sulphuric acid produces zinc sulphate and hydrogen gas.

Gas is evolved in which of the chemical reaction?
[1mark]
A. Zinc reacting with dilute sulphuric acid
B. Iron dropped into copper sulphate solution.
C. Silver Nitrate is added to a Sodium Chloride solution.
D. Ammonia Gas reacting with Hydrochloric Acid.

Correct answer: Option A. Zinc reacting with dilute sulphuric acid

Zinc on reaction with dilute sulphuric acid produces zinc sulphate and hydrogen gas.