Read the following statements about aerobic composting of organic fraction of municipal solid waste
- The majority of the odour problem in an aerobic composting process is due to the development of anaerobic conditions within the compost pile.
- All organic carbon present in the waste will completely biodegrade in $14$ days.
- At high $\mathrm{C} / \mathrm{N}$ ratio, ammonia would be released and biological activity may - also be impeded.
- Optimum moisture content for aerobic composting process would be $50-60 \%$. Lower moisture would slow down the biological process.Excessive moisture will make it difficult to maintain aerobic conditions.
The correct choice(s) is/are
- I and IV are correct
- II and III are incorrect
- I is correct, IV is incorrect
- II is correct; IV is incorrect
