Soil Water Potential Thermodynamics & Energy Practice Questions (Q1-5) - Water Science and Technology | Agrigyan Practice

1

ICAR JRF Water Science And Technology 29 Jun 2024Shift 1

MCQ (Single Correct) +4 −1

The operational range for electrical resistance block is

0 to -0.85 bars 0 to -100 bars 0.5 to -50 bars ,-0.1 to-15 bars

2

ICAR JRF Water Science And Technology 29 Jun 2024Shift 1

Multiple Correct +4 −1

Clay mineral having largest specific surface area is

Kaolinite Montmorillonite Smectite Illite

3

ICAR JRF Water Science And Technology 29 Jun 2024Shift 1

Assertion & Reason +4 −1

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).

Assertion (A) : Dehydrogenase activity reflects the total range of the oxidative activity of soil microorganisms and may be considered a good indicator of the oxidative metabolism in soils.

Reason (R) : Dehydrogenase oxidizes soil organic matter by transferring protons and electrons from organic substrates to inorganic acceptors.

In light of the above statements, choose the correct answer from the options given below.

Both (A) and (R) are true and (R) is the correct explanation of (A) Both (A) and (R) are true but (R) is NOT the correct explanation of (A). (A) is true but (R) is false. (A) is false but (R) is true.

4

ICAR JRF Water Science And Technology 29 Jun 2024Shift 1

Match the Following +4 −1

Match List-I with List-II:

Choose the correct answer from the options given below:

List - I Nutrient element		List - II Enzymes
A	Copper Copper	I	Nitrogenase and nitrate reductase Nitrogenase and nitrate reductase
B	Iron Iron	II	Ascorbic acid oxidase and polyphenol oxidase Ascorbic acid oxidase and polyphenol oxidase
C	Zinc Zinc	III	Catalase and peroxidase Catalase and peroxidase
D	Molybdenum Molybdenum	IV	Carbonic anhydrase and alcohol dehydrogenase Carbonic anhydrase and alcohol dehydrogenase

(A) - (1), (B) - (Il), (C) - (Ill), (D) - (IV) (A) - (Il), (B) - (Ill), (C) - (IV), (B) - (1) (A) - (1), (B) - (M), (C) - (V), (D) - (ttl) (A) - (III), (B) - (V), (C)~ (1), (B) - (HN)

5

ICAR JRF Water Science And Technology 29 Jun 2024Shift 1

MCQ (Single Correct) +4 −1

Soil moisture tension in a salt free soil at field capacity depending on soil texture ranges from

7 to 32 atmosphere 0.7 to 7 atmosphere 0.04 to 0.7 atmosphere < 0.01 atmosphere

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