Agronomy - Study Mode

[#876] Most common place in a city where the value of altitude for that city is mentioned.
Correct Answer

(B) Railway station

Explanation

Solution: The railway station is the most common place in the city where the value of altitude is mentioned for the city. It is mentioned in km from the sea level.

[#877] The neutron scattering method is not useful in estimating the moisture in
Correct Answer

(D) Organic soils

Explanation

Solution: The neutron scattering technique is used to measure water content in the soil. The principle involved in this method is when a source is lowered into the soil and fast neutrons are emitted, the soil causes the neutron to slow and scatter. The result is that the probe becomes surrounded by a cloud of slow neutrons. But this method is not useful in estimating the moisture in organic soils.

[#878] Rice export in 2004 - 05 from India out of total agricultural exports was
Correct Answer

(B) 13%

Explanation

Solution: Rice is one of the staple food crops of India for human nutrition and caloric intake. There are many varieties of rice and it tends to vary regionally as per the culinary preferences. At present India exports rice to over 150 countries in the world. It is more than 33% of total rice being exported in 2020 - 21. Whereas Rice export in 2004 - 05 it was 13% only.

[#879] Solar-radiation is measured by
Correct Answer

(B) Pyranometer

Explanation

Solution: Pyranometer is the instrument that is used to measure solar radiation on a planar surface. It is designed to measure the solar radiation flux density from the hemisphere above within in range of 0.3 micro meters to 3 micro meters. The name Pyranometer is derived from the Greek words Pyr means ‘fire’, ano means 'above the sky'.

[#880] Infrared thermometer is used to measure
Correct Answer

(C) Crop canopy temperature

Explanation

Solution: An infrared thermometer is used to measure crop canopy temperature. An infrared thermometer measures temperature from a part of the black body radiation produced and discharged by the targeted material. These are also called laser thermometers as the laser is used to aim the target.