Soil Science MCQ – 25

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Q.1: H2S gas produced in rice field has ___ effect on availability of P?

1. Synergistic
2. Antagonistic
3. No effect
4. None of the above

Q.2: Unsaturated hydraulic conductivity is maximum in?

1. Sandy soil
2. Silty soil
3. Loamy soil
4. Clayey soil

Q.3: Which chemical is used as extractant during sulfur estimation by Chesnin and Yein method?

1. Gum acacia
2. BaSO4
3. CaCl2
4. TEA

Q.4: Example of Gum Producing Bacteria is?

1. Azotobacter
2. Beijerinckia
3. Rhizobium
4. All of the above

Q.5: Total Mn of a soil sample after digestion with HF (not upto dryness) can be measured through?

1. Glass nebulizer
2. Teflon nebulizer
3. Both
4. None of the above

Q.6: PLFA is used to measure?

1. Biodiversity
2. Bioindication
3. Biomonitoring
4. Bioremediation

Q.7: Honey-comb structure is found in which group?

1. Phyllosiliocate
2. Nesosilicate
3. Sorosilicate
4. None of the above

Q.8: Dyer’s regent is?

1. 2.5% citric acid
2. 2% citric acid
3. 1% citric acid
4. 1.5% citric acid

Q.9: Exchange acidity is determined by which method?

1. Kononova’s
2. Sokonov’s
3. Kappen’s
4. SMP method

Q.10: In remote sensing, vegetation gives maximum reflectance in which spectral band?

1. NIR
2. Red
3. Green
4. Blue

Soil Science MCQ – 25

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