The electroplating or chromium is undertaken because

Options

A. Electrolysis of chromium is easier
B. Chromium can form alloys with other metals
C. Chromium gives protective and decorative coating to the base metal
D. Of the high reactivity of metallic chromium

Explanation

**Step-by-Step Solution:**

1. **Understanding Electroplating**: Electroplating is a process that uses electrical current to reduce dissolved metal cations so that they form a coherent metal coating on an electrode. In this case, we are focusing on chromium electroplating.

2. **Purpose of Chromium Electroplating**: The primary purpose of electroplating with chromium is to enhance the properties of the base metal. Chromium provides a protective layer that prevents corrosion and wear.

3. **Analyzing the Options**:
- **Option A**: "Electrolysis of chromium is easier" - This is incorrect. The electrolysis of chromium is not particularly easy compared to other metals.
- **Option B**: "Chromium can form alloy with other metals" - This is also incorrect. Chromium does not readily form alloys with many metals, which is why it is often used as a plating material instead.
- **Option C**: "Chromium gives protective and decorative coating of the base metal" - This is correct. Chromium plating provides a protective layer that prevents rust and enhances the appearance of the metal.
- **Option D**: "High reactivity of metallic chromium" - This is misleading. While chromium can react with certain substances, it is not classified as highly reactive compared to other metals.

4. **Conclusion**: Based on the analysis of the options, the correct answer is that chromium gives a protective and decorative coating of the base metal.

**Final Answer**: The electroplating of chromium is undertaken because chromium gives a protective and decorative coating of the base metal.

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