Related Questions

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.
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.
Assertion (A): The velocity of the sound in air increases due to the presence of moisture in it. Reason (R): The presence of moisture in the air lowers the density of air. Select the correct response from the code given below: