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Q. No.The soil is enriched of dissolved ions and inorganic salts because of
(1) Raining
(2) Leaching
(3) Weathering
(4) Erosion
(1) Raining
(2) Leaching
(3) Weathering
(4) Erosion
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not true about soil?
P. Soil not only supplies minerals but also harbours nitrogen fixing bacteria and other microbes
Q. It holds water
R. It supplies air to the roots
S. It acts as a matrix that stabilises the plant
T. It is a source of photosynthate
U. It is positively geotropic without any exception
1. S, T and U
2. T and U
3. S and U
4. R and T
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following micronutrients does not form components of fertiliser?
(1) Cu, Mn
(2) Zn, K
(3) Fe, Cu
(4) Cu, Zn
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following macronutrients does not form components of fertiliser?
(1) N,P
(2) P,S
(3) K,S
(4) S,Zn
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyNitrogen:
Find the incorrect one.
1. Plants compete with microbes for it.
2. It is a limiting nutrient for both natural and agricultural ecosystem
3. Nitrogen has triple covalent bonds
4. Nitrogen fixation is conversion of nitrogen into nitrate
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn nature, ……….. and ……….. provide enough energy to convert Nitrogen to nitrogen oxides (NO, NO2, N2O).
(1) Lightning, Forest fires
(2) Industrial combustions, UV radiation
(3) Forest fire, Lightning
(4) Lightning, UV radiation
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDecomposition of organic nitrogen of dead plants and animals into ammonia is called
(1) Nitrogen Fixation
(2) Ammonification
(3) Nitrification
(4) Denitrification
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyElectrical nitrogen fixation leads to
(1) Formation of Nitrate
(2) Formation of Nitrite
(3) Formation of Ammonia
(4) Formation of Nitrogen
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAmmonia is first oxidized to nitrite by the bacteria except
(1) Nitrosomonas
(2) Nitrococcus
(3) Nitrobacter
(4) All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyNitrification does not include
(1) Conversion of ammonia to nitrite
(2) Conversion of nitrite to nitrate
(3) Conversion of nitrogen to ammonia
(4) Both B and C
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