engineering recuitment RPSC AEn Mock Test 2024 Irrigation Engineering Water Requirement of Crops

अच्छी गुणवत्ता वाले सिंचाई के पानी में निहित सल्फेट की मात्रा (PPM) कितनी है?

1
0-192
2
195-480
3
> 480
4
उपरोक्त सभी
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