Q13 of 269 Page 148

What is the function of anaerobic micro-organisms such as anaerobic bacteria in a biogas plant?

Anaerobic bacteria help in the degradation of cow-dung in the presence of water but in the absence of oxygen and hence produces biogas. The most of the important bacteria involved in biogas production process are anaerobes.


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11

Write two forms in which solar energy manifests itself in sea.

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Write the full form of OTE.

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State whether the following statement is true or false:

Tidal energy is one of the forms in which solar energy manifests itself in oceans.

 15

Fill in the following blanks with suitable words:

(a) Biomass is another form in which .......... energy manifests itself.


(b) Tidal waves build up and recede .............. a day.