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Agriculture Mcqs 7387 MCQs [All-Courses]

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Agriculture MCQs cover fundamental and applied concepts related to farming, crop production, soil science, irrigation, fertilizers, plant breeding, pests, and agricultural economics. This topic is designed to strengthen conceptual understanding and problem-solving skills through objective questions. It is especially useful for competitive exams such as PPSC, FPSC, KPPSC, BPSC, NTS, OTS, and other testing services, helping candidates prepare with exam-oriented and up-to-date agricultural knowledge.

All Topics  7387

The lower leaves turn yellow and in some crops they quickly start drying up as if suffering from shortage of water, stunted growth, leaves & fruits shedding & whole plant becomes yellow, are deficiency symptoms of:_________?
A Potash
B Nitrogen
C Calcium
D Both a & c
Correct Answer: Nitrogen
From the sources of plant nutrients availability in soil, which of the following statements are correct:
A The plant absorbs carbon as carbondioxides directly from the atmosphere.
B Water is the source of hydrogen
C Air & water is the source of oxygen & the chief source of soil nitrogen is organic matter & when organic matter decomposes it gives ammonia.
D All of the above
Correct Answer: All of the above
Ammonium sulfate fertilizer containing 21% N & 24% S, is best in top dressing in:_________?
A Barley
B Rice
C Date palm
D None of these
Correct Answer: Rice
Immobile nutrient in soil is:_________?
A P
B N
C Mg
D None of the above
Correct Answer: P
Irregular rock masses formed in the pre-existing cracks & crevices are:__________?
A Sills
B Dikes
C Lacoliths
D Batholiths
Correct Answer: Sills
What happens when an saline-alkaline soil is reached with water:
A pH decrease, Ec increase
B pH & Ec both increase
C pH increase & Ec decrease
D None of these
Correct Answer: pH increase & Ec decrease
Azotobacter fixes atmospheric nitrogen in the soil by:__________?
A Symbiotically
B Non-symbiotically
C Can fix A & B
D None of these
Correct Answer: Non-symbiotically
Maximum fixation of K occurs:__________?
A 1:1 clay mineral
B 1:2 clay mineral
C 2:1 clay mineral
D 2:2 clay mineral
Correct Answer: 2:1 clay mineral
Conversion of inorganic P to organic P is known as:_________?
A Mineralization
B Immobilization
C Solubilization
D both A & C
Correct Answer: Immobilization
N and P sprayed on the leaves at time of flowering results in:________?
A Increase in fruit yield
B Improve their protein
C Increase fruit yeid & protein
D None of these
Correct Answer: Increase fruit yeid & protein
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