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

Select the incorrect statements :

1
The most harmful constituent of water is Manganese
2
Natural mineral contaminant in water is iron
3
Disinfection of water is done by Passing chlorine
4
All of the above
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