Soil Science MCQ – 26

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Q.1: Liming material passing through a 60 mesh sieve has efficiency (%)?

1. 60
2. 80
3. 90
4. 100

Q.2: Problem of soil crusting is prevalent in ___ soils?

1. Sandy loam
2. Silty clay
3. Silty-clay loam
4. Silty loam

Q.3: Dry Ice sublimes at which temperature?

1. 78 °C
2. 68 °C
3. –68 °C
4. –78 °C

Q.4: Specific Surface of a spherical soil particle having 1.5 mm diameter is?

1. 1.5
2. 2.25
3. 4.0
4. 1.25 m2/m3

Q.5: Due to Nitrification process soil pH?

1. increases
2. Decreases
3. does not affect soil pH
4. None of the above

Q.6: Physiological Wilt is associated with which stress?

1. Osmotic stress
2. Chilling stress
3. Nutritional stress
4. Abiotic stress

Q.7: Dry Ice sublimes at which temperature?

1. 78 °C
2. 68 °C
3. –68 °C
4. –78 °C

Q.8: Vesicles and Arbuscles are found in which Mycorrhizae?

1. AM
2. Endomycorrhizae
3. Both A and B
4. None of the above

Q.9: Which silicate class is having #-D structure?

1. Inosilicate
2. Tectosilicate
3. Nesosilicate
4. Sorosilicate

Q.10: Oxidation state of sulphur?

1. +6 to –2
2. –6 to +2
3. +5 to –3
4. –5 to +3

Soil Science MCQ – 26

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