The top 8 inches of soil of one acre may contain ……….. of bacteria and fungi.
A) 1/2 kg
B) 51/2 tons
C) 1 ton
D) 1 kg
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What are the different types of impurities that a solid may contain?
A solid substance may contain two types of impurities : Impurities which are soluble in the same solvent as the main substance. Impurities which are not soluble in the same solvent as...
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The time required to create one inch of top soil A) 100 – 1000 years
B) 100 – 10,000 years
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If the pH level of soil is below 7 then the soil is
Correct option is A) acidic
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Major microbial groups in soil are A) bacteria, fungi
D) bacteria, fungi, protozoa
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Number of earthworms present in one acre of land where the top soil is eight inches thick
Correct option is B) 50000
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Identify the correct matching from the following. List – A 1) Soil below pH7 2) Soil above pH7
C) 1 – b, 2 – c, 3 – a
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Match the following: Group – A 1) Soil below pH 7 2) Soil above pH 7
Group – A Group – B 1) Soil below pH 7 H) Acidic 2) Soil above pH 7 E) Alkaline 3) Mineralization G) Soil microbes 4) Mycorrhiza A) Symbiosis 5) Biodegradable waste F) Dung 6) Non-biodegradable waste D) Radioactive waste 7) DDT C) Insecticide
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state any five types of soil in India and explain the characteristics and distribution of soil?
Soil Type Characteristics Distribution Forest and mountain soils Differ from region to region depending on climate. Formation - due to mechanical weathering caused by snow, rain, temperature variation Chemical properties - are deficient in potash, phosphorus and lime. Nature...
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i) Getting 7 on the top when a dice is rolled ii) Getting head on the top while tossing a coin
C) Both (i) & (iv)
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The soil found in Northern Great Plains and coastal plains Red soil Alluvial soil Black soil Laterite soil
Alluvial soil.
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