The charged molecule which is electrically neutral is known as -

Options

A. Amide
B. Amino acid
C. Zwitterion
D. Polar amino acid

Answer

To solve the question "The charged molecule which is electrically neutral is known as -", we can follow these steps:

### Step 1: Understanding the Terms
- **Charged Molecule**: A molecule that has either a positive or negative charge due to the presence of charged groups.
- **Electrically Neutral**: A molecule that has no overall charge, meaning the total positive charge balances the total negative charge.

### Step 2: Identifying the Correct Term
- We need to find a term that describes a molecule that has both positive and negative charges but is overall neutral.

### Step 3: Analyzing the Options
1. **Amide**: This is a functional group that typically does not have a net charge. Therefore, it is not the correct answer.
2. **Amino Acid**: Amino acids can exist in charged forms (as zwitterions) but are not always neutral. Thus, this is not the best answer.
3. **Zwitterion**: This term specifically refers to a molecule that has both positive and negative charges but is overall neutral. This is the correct answer.
4. **Polar Amino Acid**: While polar amino acids can have charged groups, they do not necessarily have equal amounts of positive and negative charges, so this is not the correct answer.

### Step 4: Conclusion
The correct answer to the question is **Zwitterion**.

### Final Answer:
The charged molecule which is electrically neutral is known as **Zwitterion**.

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