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Consider the following statements with reference to the bio-toilets used by the Indian railways:
1.It is based on the bio-digester concept of Defence Research and Development Organization.
2.It uses a colony of anaerobic bacteria to decompose the human waste.
3.DRDO has brought the psychrophilic bacteria from Antartica to use it in the bio-toilet.
4.Carbon Dioxide (CO2) and water vapour (H2O) are the only end products in this decomposition which are released into the atmosphere.
How many of the statements given above is/are correct?
Only One
Only Two
Only Three
All Four
Correct: The bio-toilets are indeed based on the bio-digester concept developed by the Defence Research and Development Organization (DRDO).
Correct: These bio-toilets use a colony of anaerobic bacteria for decomposing human waste.
Correct: The psychrophilic bacteria used in these bio-toilets are specifically brought from Antarctica.
Incorrect: The end products of the decomposition process in these bio-toilets are not just Carbon Dioxide (CO2) and water vapor (H2O). They also include methane and other gases in small quantities, along with non-toxic effluent water.
Therefore, statements 1 ,2 and 3 are correct.
By: Kamal Kashyap ProfileResourcesReport error
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