Microbes in Waste Management

Q.

The domestic sewage in large cities:

1. Has very high amounts of suspended solids and dissolved salts

2. Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs)

3. Has a high BOD as it contains both aerobic and anaerobic bacteria

4. When treated in STPs does not really require the aeration step as the sewage contains adequate oxygen.

Q. Statement 1: The technology of biogas production was developed in India by the joint efforts of Indian Agricultural Research Institute (IARI) and Khadi and Village Industries Committee (KVIC)

Statement 2: Ganga Action Plan and Yamuna Action Plan was initiated by the Ministry of Environment and Forests, Government of India.

1. Statement 2 is correct while statement 1 is incorrect
2. Statement 1 is correct while statement 2 is incorrect
3. Both statements are correct
4. Both the statements are incorrect

Q.

Paragraph for below question
नीचे दिये गये प्रश्न के लिए अनुच्छेद

Biogas is a mixture of gases produced by microbial activity. Certain bacteria grow anaerobically on cellulose material and produce large amount of gases collectively called biogas.

Based on the above information answer the following questions.

जैवगैस, गैसों का एक मिश्रण है जो सूक्ष्मजीवी क्रियाविधि द्वारा उत्पन्न होता है। कुछ जीवाणु सेलुलोज पदार्थ पर अवायवीय रूप से वृद्धि करते हैं तथा बहुत अधिक मात्रा में गैस उत्पन्न करते हैं जो सामूहिक रूप से जैवगैस कहलाता है।

उपरोक्त जानकारी के आधार पर निम्नलिखित प्रश्नों का उत्तर दीजिए।

Q. Bacteria that are involved in biogas production are also found in

प्रश्न - जैवगैस उत्पादन में सम्मिलित जीवाणु _______ में भी पाए जाते हैं।

1. Hot sulphur springs
   
   हॉट सल्फर स्प्रिंग
2. Rumen of cattles
   
   मवेशियों के रूमेन
3. Aeration tank of sewage treatment plant
   
   वाहितमल उपचार संयंत्र के वातन टैंक
4. Root nodules of some leguminous plants
   
   कुछ लेग्यूमिनस पादपों की मूल ग्रंथि