✅ (a) Clostridium: • Clostridium is an anaerobic, free-living nitrogen fixer that thrives in water-logged, oxygen-deficient soils. • Plays a role in fixing nitrogen in paddy fields and wetland soils.
❌ (b) Azotobacter: • Aerobic; grows well in well-aerated soils, not water-logged.
❌ (c) Rhizobium: • Symbiotic with legumes but requires moderate moisture, not prolonged waterlogging.
❌ (d) Radiobacter: • Not associated with waterlogged soil or nitrogen fixation.
English
60 Questions
60 Marks
45 Mins English English100 Questions100 Marks120 Mins English English100 Questions100 Marks120 Mins EnglishThe WHO standard of drinking water for nitrate is
Emissivity of a black body is
Environmental Protection Act was enacted in the year
The spectral bands used in Greenness Vegetation Index are (A) Red (B) Blue (C) Green (D) NIR (E) MIR
Choose the correct answer from the options given below:
The formula for Ethane is
Deficiency of Vitamin A causes
The building units of oligosaccharides and polysaccharides are
The consumption of water containing high levels of nitrate–N can lead to
The common table sugar is
Suggested Test Series
Suggested Test Series
