Question

1. Anaerobic bacteria digest animal waste and produce bio gas the bio gas is then burnt as fuel following statements pertain to these changes . choose the correct one.
i)process- A is a chemical changes .
ii)process-B is a chemical changes.
iii)Both processes A and B are chemical changes .
iv)None of these processes is a chemical change.
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Answer 1

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1. Anaerobic bacteria digest animal waste and produce bio gas the bio gas is then burnt as fuel following statements pertain to these changes . choose the correct one.

i)process- A is a chemical changes .

ii)process-B is a chemical changes.

iii)Both processes A and B are chemical changes .

iv)None of these processes is a chemical change.

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iii)Both processes A and B are chemical changes .

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Process A is When bacteria digests animal wast and produces biogas.As biogas is the new substance formed by the bacteria,this is a chemícal change.

In process B we can burn the biogas as fuel.

Burning changes the chemícal composition of the biogas.Hence,this is also a chemícal change.

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Answer 2

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1. Anaerobic bacteria digest animal waste and produce bio gas the bio gas is then burnt as fuel following statements pertain to these changes . choose the correct one.

i)process- A is a chemical changes .

ii)process-B is a chemical changes.

iii)Both processes A and B are chemical changes .

iv)None of these processes is a chemical change.

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iii)Both processes A and B are chemical changes .

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$\;\star\;{\underline{\boxed{\bf{\mathtt{\pink{\; More \: Information:\;}}}}}}\;\star$

Process A is When bacteria digests animal wast and produces biogas.As biogas is the new substance formed by the bacteria,this is a chemícal change.

In process B we can burn the biogas as fuel.

Burning changes the chemícal composition of the biogas.Hence,this is also a chemícal change.

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