Question

Compound ‘B’ reacts with HCl to give compound ‘A’ along with a by-product. Choose the incorrect statement regarding this chemical reaction. ​

• A. Compound A is metallic salt.
• B. The given reaction is a neutralisation reaction.​
• C. Compound B is a base.
• D. Hydrogen gas is formed as a by-product of this reaction.​

Answer 1

The correct option is D Hydrogen gas is formed as a by-product of this reaction.​

• If a metal hydroxide reacts with HCl it gives metallic salt with water.
• So in this compound B is a metal hydroxide, it gives compound A on reaction with HCl. So, compound a is a metallic salt.
• Hence option A and B are correct.
• As metal hydroxide is base and HCl is acidic , this reaction is a neutrallisation reaction.
• Thus option D is also correct.
• From the given options only option C i.e. Hydrogen gas is formed as a by-product of this reaction , is incorrect as water is formed as a by-product in this reaction.
• The answer is option C.