Match the following columns:
| Column I (Particulars) | Column II (Measuring instruments) |
| a. Hygroscopic humidity | 1. Irrometer |
| b. Canopy temperature | 2. Barometer |
| c. Atmospheric pressure | 3. Infra-red thermometer |
A. a-3, b-2, c-1
B. a-1, b-3, c-2
C. a-2, b-3, c-1
D. a-2, b-1, c-3
Answer: Option B
Solution(By Examveda Team)
Irrometer measures the actual soil water tension and can be used to determine hygroscopic humidity. It indicates the effort required by root systems to extract water from the soil.The barometer is a scientific instrument used to measure atmospheric pressure. It works by balancing the weight of mercury in the glass tube against the atmospheric pressure.
An infra-red thermometer is a thermometer which infers temperature which infers temperature from a portion of the thermal radiation emitted by the object being measured. It is used to measure Canopy Temperature.
This Question Belongs to Agriculture >> Soil Science
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