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

पीने योग्य पानी में नाइट्रेट सामग्री की अनुमेय सीमा कितनी है?

1
25 ppm
2
45 ppm
3

100 ppm

4
150 ppm
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