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1) Who is considered the father of field plot technique ?, (a) JB Boussingault, , (b) Pushkarnath, , (c) Ramanunjan, , (d) Liebig, , 2) Salinization of soil is great problem in, , (a) Arid and semi arid regions, , (b) Humid regions, , (c) Freezing climate, , (d) Sub-humid climate, , 3) The amount of fertilizer sizes of mineral practices is soil defines the soil., , , , (A) Structure, , (8) Profile, , (C) Bulk density, , (D) Texture, , 4) Organisms have a significant effect on soil formation by controlling the........, (a) Time of soil formation, , (b) Development of C horizon, , (c) Decomposition and transformation of organic matter, (d) All of these, , 5) Generally for most soil bacteria activities, pH range is:, (a) 6-8, , (0) 57, , (c) 7-9, , (d) 3-5, , W7] Edit with WPS Office

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6) Bulk density is highest of:, (a) Clay soil, , (c) Silt loam soil, , (b) Clay loam soil, , (d) Sandy soil, , 7) In conservation agriculture the percentage of crop residues that should remain in the soil at, harvest of a crop is:, , (a) 10 per cent, , (c) 30 per cent, , (b) 20 per cent, , (d) 40 per cent, , 8). Most sensitive crop to poor soil aeration is:, , (a) Maize, , (b) Wheat, , (c) Tobacco, , (d) Sugarcane, , 9) Montmorillonitic clay minerals are predominant in:, (a) Alluvial soil, , (c) Laterite soil, , (b) Red soil, , (d) Black soil, , 10) Which soil can be reclaimed best by application of gypsum?, (a) Saline soil, , (B) Alkali soil, , (c) Saline-alkali soil, , (d) Acid soil, , W7] Edit with WPS Office

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11) ‘Sail fertility and fertilizers’ was written by, (A) MM Rai, , (B) NC Brady, , {C) Tisdale et al., , (BD) None, , 12) Ithas been observed that soil pH increases in, (a) Summer, , (B) Winter, , (c) Zaid, , (d) Post monsoon season, , 13) ‘Peat’ soil are generally characterized as, (A) Black, heavy and acidic, , (b) Red, light and acidic soil, , (c) Black, heavy and neutral soil, , (d) Black, light and alkaline soil, , 14) Hill soils are generally, , (A) Acidic, , (b) Alkaline, , (c) Neutral, , (d) Saline, , 15) Soil aeration limits plants growth when per cent pores filled with water are more than, (A)50 - 60%, , (B) 70-80%, , (C) 60-70%, , (D) 80 - 90%., , W7] Edit with WPS Office

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16) Chemical formula af Iron pyrite reclaiment is, (a) FeS, , (b) CuS FeS,, , (c) MnS, , (D) Fes2, , 17) Concentration of which element is highest in soil, (a) Fe, , (B) 02, , (C) Si, , (D) Al, , 18) Which is a incorrect match in the following ?, (a) Soil bulk density ; Hydrometer, , (b) Particle size analysis of soil ; Picrometer, , (c) Soil moisture retention : Permeameter, , (d) Soil moisture estimation : Potometer, , 19) Specific heat is higher in, , (a) Sand., , (b) Silt, , (c) Clay, , (d) Humus, , 20) Rocks containing more than 65% SiO, are, (a) Neutral, , (b) Alkaline, , (c) Acidic, , (d) None of these, , W7] Edit with WPS Office

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21) Which one is dominating salt in alkali soil ?, (a) CaCl,, , (b) Mgso, , (c) NaHCO,, , (d) Na,CO3, , 22) Average cantent of silica in soil is, , (a) 24%, , (b) 27%, , (c)31%, , (d) 35%, , 23) Concentration of nitrogen in soil air is, , (a) 70%, , (b) 74%, , (c) 78%, , (d) 82%, , 24) Which of the following soils have poor physical condition ?, (a) Saline, , (b) Sodic, , (c) Saline-alkali, , (d) None, , 25) Who consider the various properties of soils in relation to plant production ?, (a) Agranomists, , (b) Pedologist, , (c) Edaphologists, , (d) Soil chemists, , W7] Edit with WPS Office