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A solid ‘X’ i...

Question

A solid ‘X’ is formed on roasting a metal sulphide ore. The metal has 30 protons in it. If 'X' reacts with both hydrochloric acid and sodium hydroxide to give corresponding salts, which of the given can be observed upon addition of salt to indicators?

A

It will turn red litmus blue.

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B

It will turn blue litmus red.

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C

No change is observed on litmus paper.

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D

Turns turmeric powder red.

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Solution

The correct option is C No change is observed on litmus paper.

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Similar questions

Q. A solid ‘X’ is formed on roasting a metal sulphide ore. X reacts with both hydrochloric acid and sodium hydroxide to give corresponding salts. Identify the metal present in the ore.

Q. A metal X reacts with zinc chloride to form metal chloride and zinc. The oxide of metal X reacts with both hydrochloric acid and sodium hydroxide to produce salt and water. Identify the metal X.

[0.8 mark]

Metallic sulphide reacting with hydrochloric acid forms salt and ___.

Q. Indicate if the following statements are true or false.
(a) Oxides of non-metals dissolve in water to form some acids.
(b) Sulphites are salts formed from sulphuric acid.
(c) Phosphoric acid is tribasic.
(d) Nitric acid can only form normal salts.
(e) Hydrochloric acid can form both carbonates and bicarbonate.
(f) Carbonic acid can form both carbonates and bicarbonates.
(g) Water of crystallisation is found in anhydrous salts.
(h) Litmus turns red in the presence of alkalis.
(i) An acid reacts with a carbonate to form a salt, and hydrogen gas is obtained.
(j) Acid taste sweet.
(k) When the metal zinc reacts with hydrochloric acid, a salt called zinc chloride is formed.
(l) when metals react directly with acids, the reaction is called a displacement reaction.
(m) Sulphuric acid has the formula H₂SO₃.
(n) Carbon dioxide gas is given off as a result of displacement reactions between acids and metals.

Dilute hydrochloric acid $(HCl)$ reacts with metals to evolve _____ gas along with the formation of corresponding metal salt.

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