Which one of the following is not a non biodegradable industrial waste?

Options

A. Gypsum from fertilizer industries
B. Mud and tailings from metal industries
C. Slag from steel industries
D. Waste from textile industries

Answer

To solve the question "Which one of the following is not a non-biodegradable industrial waste?", we can follow these steps:

### Step 1: Understand the Definitions
- **Biodegradable Waste**: Waste that can be decomposed by natural processes, typically by microorganisms, into non-toxic substances.
- **Non-Biodegradable Waste**: Waste that cannot be decomposed naturally and remains in the environment for a long time, often causing pollution.

### Step 2: Identify the Options
- Since the question provides options, we need to evaluate each option to determine if it is biodegradable or non-biodegradable.

### Step 3: Analyze Textile Industry Waste
- The waste from textile industries often includes natural fibers (like cotton, wool, etc.) and synthetic fibers (like polyester, nylon, etc.).
- Natural fibers are generally biodegradable, as they can be broken down by microorganisms.
- Synthetic fibers, on the other hand, are typically non-biodegradable.

### Step 4: Determine the Correct Answer
- The question asks for the option that is **not** a non-biodegradable industrial waste. Since textile industry waste (especially natural fibers) is biodegradable, it does not fall under the category of non-biodegradable waste.
- Therefore, the waste from textile industries is the correct answer as it is not a non-biodegradable industrial waste.

### Conclusion
- The answer to the question is: **Waste from textile industries** is not a non-biodegradable industrial waste.

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