railway RRB JE (CBT I + CBT II) Mock Test 2024 Environmental Engineering Sewage Sewage Treatment

In which stage of sludge decomposition does BOD fall rapidly and large volumes of methane gas along with small amount of other gases are evolved?

1

Acid fermentation

2

Acid regression

3

Alkaline fermentation

4

Alkaline regression

Share: WhatsApp Telegram X

Sponsored

hivanix.in

This quiz is brought to you by hivanix.in

🌐 Web App Development

Other Tools: chatwiz.hivanix.in mmspace.hivanix.in unogame.hivanix.in

Quick Navigation

Home

Subjects

Chapters