Biogas plant consists of cocrete tank, ______ feet deep, in which biowastes are collected and slurry of dung is fed.

Explanation

To answer the question regarding the depth of the concrete tank in a biogas plant, we can follow these steps:

1. **Understanding the Biogas Plant**: A biogas plant is designed to produce biogas through the anaerobic digestion of organic materials, such as biowaste and dung.

2. **Components of the Biogas Plant**: The main component of a biogas plant is a concrete tank where the biowaste and slurry of dung are collected.

3. **Determining the Depth of the Tank**: The question specifically asks for the depth of this concrete tank. Based on the information provided, the depth of the tank is typically between 10 to 15 feet.

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