Q16 of 58 Page 69

Methanogens do not produce:

Methanogens are methane producing bacteria and they are anaerobic organisms. Therefore, they do not produce or require Oxygen. The other options are gases which methanogens produce.

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Big holes in Swiss cheese are made by a:

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The residue left after methane production from cattle dung is:

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Activated sludge should have the ability to settle quickly so that it can:

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Match the items in Column ‘A’ and Column ‘B’ and choose correct answer.

The correct answer is: