A group of researchers finds that a metal P,
used in making cans and thin foil, reacts with dilute hydrochloric acid to form a salt along with the evolution of a gas G, which burns with a pop sound. Further research on P concluded that its oxide X reacts with acids and bases as well. Identify the metal P, the gas G, and the oxide X.

P : F e; G : C O_{2}; X : F e_{2} O_{3}

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P : A l; G : H_{2}; X : A l_{2} O_{3}

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Solution

The correct option is B $P : A l; G : H_{2}; X : A l_{2} O_{3}$
Correct option is 'B'.

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Q. Hydrochloric acid reacts with a metal X to form a gas Y which burns with a 'pop' sound. Sodium hydroxide solution also reacts with the same metal X (on heating) to form the same gas Y.
(a) Name X and Y
(b) Write the chemical equation of the reaction of metal X with (i) hydrochloric acid, and (ii) sodium hydroxide solution.

Q. It was found that metal P reacts with dilute sulphuric acid to form a salt along with the evolution of a gas that burns with a pop sound. Further research on metal P concluded that it can react with bases too. Identify metal P from the given option

Q. It was found that metal P reacts with dilute hydrochloric acid to form respective salts along with the evolution of a gas which burns with a pop sound. Further experiment on metal P concluded that, it can react with bases too. From the given options, identify metal P.

(a) Iron
(b) Zinc
(c) Copper

Metal A burns in air, on heating, to form an oxide $A_{2} O_{3}$ . $A_{2} O_{3}$ can react with hydrochloric acid as well as sodium hydroxide solution to form the corresponding salts and water.

(a) What is the nature of oxide $A_{2} O_{3}$ ?

(b) Name one metal like A.

to dilute sulphuric acid?

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The correct option is B P:Al;G:H2;X:Al2O3 Correct option is 'B'.

The correct option is B $P : A l; G : H_{2}; X : A l_{2} O_{3}$
Correct option is 'B'.