Anaerobic bacteria digest animal waste and produce biogas. The biogas is then burnt as fuel. Analyze the changes involved in the process.

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Solution

1. Anaerobic bacteria convert the waste to biogas that is one form of chemical energy is converted to other form chemical energy.

2. Burning of biogas is conversion of chemical energy to heat energy.

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Q. Anaerobic bacteria digest animal waste and produce biogas (Change – A). The biogas is then burnt as fuel (Change – B). The following statements pertain to these changes. Choose the correct one.

Q. Question 12
Anaerobic bacteria digest animal waste and produce biogas (Change –A). The biogas is then burnt as fuel (Change –B). The following statements pertain to these changes. Choose the correct one.
Which of the above changes is/are chemical change(s)?
(i) Process – A is a chemical change.
(ii) Process – B is a chemical change.
(iii) Both processes A and B are chemical changes.
(iv) None of these processes is a chemical change

Anaerobic bacteria digest animal wastes and produces biogas (change=A) . The biogas is then burnt as fuel (change=B) . The following stamens pretain to these changes . Choose the correct one :

(a) A is a chemical change (b) B is a chemical change

(d) A and B are physical changes.

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Anaerobic bacteria digest animal waste and produce biogas. The biogas is then burnt as fuel. Analyze the changes involved in the process. ​

1. Anaerobic bacteria convert the waste to biogas that is one form of chemical energy is converted to other form chemical energy. 2. Burning of biogas is conversion of chemical energy to heat energy.

Anaerobic bacteria digest animal waste and produce biogas. The biogas is then burnt as fuel. Analyze the changes involved in the process.

1. Anaerobic bacteria convert the waste to biogas that is one form of chemical energy is converted to other form chemical energy.

2. Burning of biogas is conversion of chemical energy to heat energy.