Soil Science MCQ For IBPS AFO NABARD RRB SO

SOIL SCIENCE IMPORTANT MCQ WITH EXPLANATION

Soil Science MCQ FOR IBPS AFO, NABARD, RRB SO

These Soil Science MCQ FOR IBPS AFO are not only important for IBPS AFO this will help students in RRB SO, NABARD & other agriculture examinations, you will also get pdf of this all AFO Important MCQ With detail explanations at THE END OF POST

 

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Q. A simple technique has been developed in India by using the following organism as biofertilizers: (IBPS AFO Mains AFO 2013)

a. Azotobacter and Nostoc
b. Azolla and Rhizobium
c. Azolla and Azotobacter
d. Azotobacter and Rhizobium
e. None of these

Azotobacter and Rhizobium

Q. Which one of the following is an explosive fertilizer? (IBPS AFO Mains AFO 2013)

  1. Ammonium nitrate
  2. Urea
  3. Sodium nitrate
  4. Both B & C
  5. None of these

a. Ammonium nitrate

Q. Volatilization of ammonia in the soil increases with the increase in (IBPS AFO Mains AFO 2013)

a. CEC of soil
b. The clay content of soil
c. NaCO3 content of the soil
d. CaCO3 content of the soil
e. Moisture content of the soil

e. The moisture content of the soil

Q. Which of the following compounds can make the colour of the soil white: (IBPS AFO Mains AFO 2013)

  1. Nitrogen
  2. Calcite
  3. Iron oxide
  4. Glauconite
  5. None of these

b. Calcite




Q. VAM is an alternative to inorganic fertilizer, VAM is: (IBPS AFO Mains AFO 2013)

a. Azotobacter
b. Nitrogen-fixing bacteria
c. PSB
d. Mycorrhiza
e. Azospirillum

Mycorrhiza

Q. Which of the following is a saturated fatty acid? (IBPS AFO Mains AFO 2013) Soil Science Important MCQ FOR IBPS AFO

  1. Palmitic acid
  2. Hydrochloric acid
  3. Boric acid
  4. Salicylic acid
  5. None of these

a. Palmitic acid

Q. Ammonium fraction in the soil is due to: (IBPS AFO Mains AFO 2013)

  1. Microbial assumption
  2. Soil exchange reaction
  3. Microbial immunization
  4. Microbial fraction
  5. Microbial deposition

d. Microbial fraction

Q. Which of the following soil properties does not change by cropping and cultivation: (IBPS AFO Mains AFO 2013)

  1. Silt content
  2. Clay content
  3. Sand content
  4. Soil texture
  5. All of these

All of these

Any soil properties can’t be changed by cropping and cultivation

Q. Which among the following components of organic matter present in the soil is the most resistant to decomposition: (IBPS AFO Mains AFO 2013) Soil Science MCQ FOR IBPS AFO

  1. Humus
  2. Cellulose
  3. Oxygen
  4. Starch
  5. None of these

Humus

Q. Plants capable of growing in rocks crevices are called as: (IBPS AFO Mains AFO 2014)

  1. Halophytes
  2. Lithophytes
  3. Calciphytes
  4. Hydrophytes
  5. None of these

Lithophytes

Q. Alluvial soils are found in: (IBPS AFO Mains AFO 2014)

  1. Mountains
  2. River deltas
  3. Deserts
  4. Forests
  5. None of these

River deltas

Q. The relative proportion of sand, silt, and clay is called as: (IBPS AFO Mains AFO 2014)

a. Soil taxonomy
b. Soil structure
c. Soil texture
d. Soil aggregation
e. None of these

c. Soil texture

Q. Vertisol is related to: (IBPS AFO Mains AFO 2014)

a. Black soil
b. Alluvial soil
c. Red soil
d. Laterite soil
e. None of these

a. Black soil

Q. The CO2 content of soil air is: (IBPS AFO Mains AFO 2014)

  1. 0.003 %
  2. 0.03 %
  3. 0.3 %
  4. 3 %
  5. None of these

ANS:-  0.3 %

Q. Sugarbeet is an indicator plant for (IBPS AFO Mains AFO 2014)

  1. P
  2. Zn
  3. Mo
  4. Na
  5. None of these

ANS:- Na

Q. Which of the following soil has the highest efficiency? (IBPS AFO Mains AFO 2014)

a. Clay soil
b. Sandy soil
c. Loamy soil
d. Both A & B
e. None of these

ANS:- Loamy soil

Q. The chemical formula of Gypsum is: (IBPS AFO Mains AFO 2015)

a. CaSO4.2H2O
b. CaSO4.5H2O
c. CaSO4.1/2H2O
d. CaSO4
e. None of these

a. CaSO4.2H2O

Q. pH of alkaline soil is: (IBPS AFO Mains AFO 2015)

  1. 5
  2. 6
  3. 7
  4. 9
  5. None of these

ANS:- 9

Soil Science MCQ FOR IBPS AFO Q. The fertilizer also called ‘Sona’ is: (IBPS AFO Mains AFO 2015)

  1. CAN
  2. Ammonium Nitrate
  3. Urea
  4. DAP
  5. None of these

ANS:- CAN

Q. Which of the following micro-organism grows well in waterlogged soil: (IBPS AFO Mains AFO 2015)

  1. Radiobacter
  2. Rhizobium
  3. Clostridium
  4. Azotobacter
  5. None of these

ANS:- Clostridium

Agriculture Current Affairs PDF

Q. Microbial conversion of nitrate into chemical nitrogen is called as (IBPS AFO Mains AFO 2015)

  1. Nitrogen fixation
  2. Nitrate reduction
  3. Denitrification
  4. Both A & B
  5. None of these

ANS:- Denitrification

Q. Drought resistance in plant is related to: (IBPS AFO Mains AFO 2015)

  1. Surplus water
  2. Negative water potential
  3. Positive water potential
  4. Both B & C
  5. None of these

ANS:- Positive water potential

Q. The manure also considered as biofertilizer is: (IBPS AFO Mains AFO 2015)

  1. BGA
  2. FYM
  3. Compost
  4. Green manure
  5. None of these

ANS:- BGA

Q. The movement and filtration of water through soils and permeable rock is termed as: (IBPS AFO Mains AFO 2016)

  1. Osmosis
  2. Sedimentation
  3. Diffusion
  4. Neutralization
  5. Percolation

ANS:- Percolation

Soil Science MCQ FOR IBPS AFO Q. The pH value of alkali soil is:  (IBPS AFO Mains AFO 2016)

  1. 0
  2. 3
  3. 5
  4. 7
  5. 9

ANS:- 9

Q. The conversion factor for conversation of organic carbon to organic matter is usually taken as: (IBPS AFO Mains AFO 2016)

  1. 0.45
  2. 2.04
  3. 1.72
  4. 0.91
  5. 1.36

ANS:- 1.72

If a soil has a pH of 6.5 and this pH is lowered to pH 5.5. The acid the content becomes _____ times greater acidic: (IBPS AFO Mains AFO 2017)

  1. 0.1
  2. 1
  3. 5
  4. 10
  5. 100

ANS:- 10

Which of the following soils are found in hills and foothill areas: (IBPS AFO Mains AFO 2017)

  1. red soil
  2. Alluvial soil
  3. Black soil
  4. Laterites and Lateritic soils
  5. Desert soil

Ans:- d. Laterites and Lateritic soils

Which of the following soils are found most extensively in India: (IBPS AFO Mains AFO 2017)

  1. Desert soil
  2. Black soil
  3. Laterite soil
  4. Alluvial soil
  5. Red soils

ans:- d. Alluvial soil

IBPS AFO STUDY MATERIAL

Which of the following is not a micronutrient for plants: (IBPS AFO Mains AFO 2017)

  1. Zn
  2. B
  3. Fe
  4. N
  5. Cu

ans:- d. N




Which of the following element is most useful for root growth: (IBPS AFO Mains AFO 2017)

  1. Nitrogen
  2. Phosphorus
  3. Boron
  4. Calcium
  5. Iron

ANS:- b. Phosphorus

Which of the following nutrient helps in chlorophyll formation? (IBPS AFO Mains AFO 2017)

  1. Mg
  2. Cu
  3. Zn
  4. N
  5. Bo

ANS:- a. Mg

Deficiency symptoms first appear on older or lower leaves: (IBPS AFO Mains AFO 2017)

  1. K
  2. N
  3. Mo
  4. Mg
  5. Cl

Ans:- b. N

Which among the following states have the highest problematic soil in India: (IBPS AFO Mains AFO 2018)

  1. Gujarat
  2. Maharashtra
  3. Madhya Pradesh
  4. Haryana
  5. Chhattisgarh

ans: – a. Gujarat

What is the EC of Saline soil: (IBPS AFO Mains AFO 2018)

  1. Less than 4
  2. More than 4
  3. Less than 8.5
  4. More than 8.5
  5. None of these

Ans:- b. More than 4

What is the ESP of saline-alkaline soils? (IBPS AFO Mains AFO 2018)

  1. Less than 15
  2. More than 15
  3. Less than 4
  4. More than 4
  5. None of these

ans:- b. More than 15

What is the pH range of the alkali soil? (IBPS AFO Mains AFO 2018)

  1. 6.5 to 8.0
  2. 7.5 to 8.5
  3. 5.5 to 6.5
  4. Less than 8.5
  5. More than 8.5

ans:- e. More than 8.5

Highest P2O5 consumption is in which crop: (IBPS AFO Mains AFO 2018)

  1. Groundnut
  2. Sugarcane
  3. Apple
  4. Jute
  5. Pineapple

ans;- a. Groundnut

pH value of acidic soil is: (IBPS AFO Mains AFO 2019)

  1. Less than 7
  2. 8.0
  3. 8.5
  4. Both B & C
  5. More than 8.5

ans:-Less than 7

Nitrogen percentage in CAN: (IBPS AFO Mains AFO 2019)

  1. 15 %
  2. 20 %
  3. 25 %
  4. 33 %
  5. None of these

Ans:- c. 25 %

Which nutrient deficiency symptoms are major veins remain green, top vein becomes short and slender, and chlorosis on new leaves: (IBPS AFO Mains AFO 2019)

  1. Fe
  2. Mn
  3. Cu
  4. Ca
  5. None of these

ans:- b. Mn

Vertisol soil having a maximum area in which state: (IBPS AFO Mains AFO 2019)

  1. Gujarat
  2. Madhya Pradesh
  3. Maharashtra
  4. Rajasthan
  5. None of these

ans:- c. Maharashtra

Which of the following refers to the zone of illuviation: (IBPS AFO Mains AFO 2019)

  1. A
  2. B
  3. R
  4. C
  5. O

ans:- b. B

New leaf of plant shows yellow symptoms and veins remain green is caused by deficiency of which nutrients: (IBPS AFO Mains AFO 2019)

  1. Mn
  2. Fe
  3. Zn
  4. Cu
  5. K

ans:- a. Mn

Soil strength is measured by: (IBPS AFO Mains AFO 2019)

  1. Planimeter
  2. Lysimeter
  3. Penetrometer
  4. Galvanometer
  5. None of these

ans:- c. Penetrometer

Which is a symbiotic nitrogen-fixing bacteria: (IBPS AFO Mains AFO 2020)

  1. Rhizobium
  2. Cyanobacteria
  3. Azotobacter
  4. Clostridium
  5. Azospirillium

ans:- a. Rhizobium

Which of the following instrument used to measure soil moisture? (IBPS AFO Mains AFO 2021)

  1. Tensiometer
  2. Hygrometer
  3. Anemometer
  4. Aerometer
  5. Pycnometer

ans:- a. Tensiometer

Water holding capacity decreasing order. (IBPS AFO Mains AFO 2021)

  1. Clay>Silt>Sand
  2. Sand>Silt>Clay
  3. Silt>Sand>Clay
  4. Clay>Sand>Silt
  5. Sil>Clay>Sand

ans:- a. Clay>Silt>Sand

Which one is not sedimentary rocks? (IBPS AFO Mains AFO 2021)

  1. Granite
  2. Gneiss
  3. Shale
  4. Conglomerate
  5. Limestone

Ans:- a. Granite

Calcareous soil gives effervescence visibly when treated with diluted 0.1 N HCL due to release of? (PYQs in BoM AFO 2021)

  1. CO2
  2. No2
  3. CH4
  4. NH3

ans:- a. CO2

Which Soil has a high-water holding capacity but poor drainage? (PYQs in BoM AFO 2021)

  1. Black soil
  2. Red soil
  3. Laterite soil
  4. Alluvial soil

ans:- a. Black soil

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Agronomy MCQ For IBPS AFO

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