Q.1. Wet black soils are
(1) Very hard
(2) Very soft
(3) Soft
(4) Hard
(5) Spongy
Q.2. Hydraulic conductivity of soils varies directly with
(1) Capillary porosity
(2) Non-capillary porosity
(3) Total porosity
(4) Water holding capacity
(5) Both 1 and 4
Q.3. Microbial population of a soil in general
(1) Decreases with depth
(2) Increases with depth
(3) Constant throughout the profile
(4) No specific trend
(5) Sometime increase with depth and sometime constant throughout the profile
Q.4. Mycorrhiza-infected plants show better ability
(1) Iron
(2) Manganese
(3) Potassium
(4) Phosphorus
(5) Zinc
Q.5. Occurrence of quartz in high amounts makes a rock
(1) Hard
(2) Soft
(3) Alkaline
(4) Acidic
(5) Both 1 and 4
Q.6. Red -soils are found maximum in
(1) Uttar Pradesh
(2) Madhya Pradesh
(3) Assam
(4) Tamil Nadu
(5) Karnataka
Q.7. Saline soils are reclaimed/managed by
(1) Addition of gypsum
(2) Addition of lime
(3) Leaching the soluble salts
(4) Addition of pyrite
(5) Both 1 and 4
Q.8. The global average of solar radiation reaching the earth is
(1) 20%
(2) 30%
(3) 40%
(4) 50%
(5) 60%
Q.9. Arachnids and insects contain Malpighian tubules as organs of
(1) Respiration
(2) Excretion
(3) Digestion
(4) Secretion
(5) Both 2 and 4
Q.10. Classification of phylum Mollusca is based on
(1) Locomotory organs
(2) Respiratory organs
(3) Digestive organs
(4) Reproductive organs
(5) Secreting organs
Answers:
Q.1 (2)
Q.2 (3)
Q.3 (1)
Q.4 (4)
Q.5 (4)
Q.6 (4)
Q.7 (3)
Q.8 (4)
Q.9 (2)
Q.10 (1)
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