Which of the following statements about bio-gas is INCORRECT?
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Q:
Which of the following statements about bio-gas is INCORRECT?
- 1Biogas contains less than 1% methane.true
- 2Bio-gas burns without smoke and leaves no residue.false
- 3Bio-gas is also known as ‘gobar-gas’.false
- 4Plant parts, vegetable waste and sewage produce biogas.false
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