In its reaction with silver nitrate, C2H2 shows A. Oxidising property B. Reducing property C. Basic property D. Acidic property

The correct answer is B. Reducing property.

In its reaction with silver nitrate, C2H2 reduces Ag+ to Ag. This is because C2H2 is a reducing agent, which means it can donate electrons to another substance. When C2H2 reacts with Ag+, the C2H2 molecule donates electrons to the Ag+ ion, causing the Ag+ ion to be reduced to Ag metal.

The other options are incorrect because they do not describe the properties of C2H2 in this reaction. Option A is incorrect because C2H2 is not an oxidizing agent. Option C is incorrect because C2H2 is not a base. Option D is incorrect because C2H2 is not an acid.

Here is a more detailed explanation of each option:

• Option A: Oxidising property. This is incorrect because C2H2 is not an oxidizing agent. An oxidizing agent is a substance that can accept electrons from another substance. In this reaction, C2H2 is donating electrons to Ag+, so it is not an oxidizing agent.
• Option B: Reducing property. This is the correct answer because C2H2 is a reducing agent. A reducing agent is a substance that can donate electrons to another substance. In this reaction, C2H2 is donating electrons to Ag+, so it is a reducing agent.
• Option C: Basic property. This is incorrect because C2H2 is not a base. A base is a substance that can accept protons from another substance. In this reaction, C2H2 is not accepting protons from Ag+, so it is not a base.
• Option D: Acidic property. This is incorrect because C2H2 is not an acid. An acid is a substance that can donate protons to another substance. In this reaction, C2H2 is not donating protons to Ag+, so it is not an acid.