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MCQs 1: Perfect hardness of any mineral is determined by___________________?

Mho’s scale pH scale Foot scale None of the above
Answer Explanation

MCQs 2: Primary air pollution is____________________?

SO SO3 SO2 None of the above
Answer Explanation

MCQs 3: Algal photosynthesis increases pH of water and releases___________________?

O2 CO2 SO3 All the above
Answer Explanation

MCQs 4: The atmospheric layer lies closest to the earth surface is known as___________________?

Mesosphere Thermosphere Troposphere Stratosphere
Answer Explanation

MCQs 5: Accumulation of soluble salts root zone is known as____________________?

Desodication Sodication Degradation Salininzation
Answer Explanation

MCQs 6: Na2CO3 salts is___________________?

Neutral Alkaline Acidic None of the above
Answer Explanation

MCQs 7: Electrical conductivity of saturated paste is written as____________________?

ECP ECe ECs Ecw
Answer Explanation

MCQs 8: The science of growing terrestrial plants in an aerated solution is known as___________________?

Nutrient film technique Hydrology Hydrants Hydroponics
Answer Explanation

MCQs 9: The wearing away of the land surface by wind, water, ice or other geological agents is called____________________?

Seepage Soil erosion Soil contamination All the above
Answer Explanation

MCQs 10: Material deposited by the wind is called____________________?

Regolith Colluvial Alluvium Eolian
Answer Explanation

MCQs 11: Rocks formed from molten magma are called__________________?

Sedimentary rocks Igneous rocks Alluvial rocks All the above
Answer Explanation

MCQs 12: Deficiency of B can be corrected through application of chemical fertilizer of_________________?

Solubor Boric acid Borax All the above
Answer Explanation

MCQs 13: Clear water with organic matter or sediment and minimum biological activity is known as__________________?

Oligotrophic Mestrophic Eutrophic Hydrotrophic
Answer Explanation

MCQs 14: Sewage water consists of water and solids in the following percentage___________________?

99 & 1 90 & 10 80 & 20 None of the above
Answer Explanation

MCQs 15: Percentage of N in Ammonium ritract fertilizer is___________________?

21 23 33 39
Answer Explanation

MCQs 16: Antioxidant is used to reduce the process of_____________________?

Reduction Oxidation Both a & b Dehydration
Answer Explanation

MCQs 17: Humic acid is soluble in______________________?

Acid Alkali Both a & b Distilled water
Answer Explanation

MCQs 18: TSP contains____________________?

14% 46%P 40%P 50%P
Answer Explanation

MCQs 19: Which silica mineral is present in soil in abundant quantity____________________?

Quartz Smectite Gypsum All the above
Answer Explanation

MCQs 20: The exact formula for sodium hexametaphosphate is___________________?

[(NaPO6)13] [(NaPO3)13] [(NaPO2)6] None of the above
Answer Explanation

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