1. The earth's water circulatory system, is known as ?

water cycle

hydrologic cycle

precipitation cycle

all of these

Answer: hydrologic cycle

Explanation:


2. Which of the following statement is correct ?

The gravity water is harmful to the crops

The hygroscopic water remains attached to the soil molecules by chemical bonds

The capillary water is utilised by the plants

all of the above

Answer: The capillary water is utilised by the plants

Explanation:


3. The area in which crop is grown at a particular time or crop season, is called ?

gross commanded area

culturable commanded area

culturable uncultivated area

none of these

Answer: culturable commanded area

Explanation:


4. The ratio of the head recovered to the head put in an outlet, is called ?

proportionality

flexibility

sensitivity

efficiency

Answer: efficiency

Explanation:


5. Check flooding method of irrigation is used for ?

closed growing crops

tracts with flat gradients

crops which can stand inundation of water for sometime

crops such as sugarcane, potatoes etc

Answer: crops which can stand inundation of water for sometime

Explanation:


6. The duty is largest ?

at the head of the main canal

at the head of the water course

on the field

at all place

Answer: on the field

Explanation:


7. Cyclonic precipitation results from ?

lifting of air masses converging into low pressure area

natural rising of warmer, lighter air in colder and denser surroundings

lifting of warm moisture-laden air masses due to topographic barriers

all of the above

Answer: lifting of air masses converging into low pressure area

Explanation:


8. The commonly used rain gauge is ?

weighing bucket type

tipping bucket type

float type

none of these

Answer: float type

Explanation:


9. The water content at which plants can no-longer extract sufficient water from the soil for growth, is called ?

field capacity

saturation capacity

permanent wilting point

available moisture

Answer: permanent wilting point

Explanation:


10. The maximum depth in soil strata, in which the crop spreads its root system, and derives water om the soil, is called ?

kor depth

root zone depth

delta

overlap allowance

Answer: root zone depth

Explanation: