railway RRB JE (CBT I + CBT II) Mock Test 2024 Environmental Engineering Quality of Water

The presence of ________ in water is an indication of the presence of organic matter.

1
Sulphur dioxide
2
Nitrogen
3
Oxygen
4
Carbon dioxide
Share: WhatsApp Telegram X

Sponsored

hivanix.in

Visit

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