Permanent atmospheric gases have nearly constant volume fractions: Nitrogen ($78.08\%$), Oxygen ($20.95\%$), and Argon ($0.93\%$).
Water Vapour ($H_2O$) is the most highly variable gas in the Earth's atmosphere, ranging from less than $0.01\%$ in cold polar and desert air up to over $4.0\%$ by volume in warm, humid equatorial regions. (Correct answer: Option 3)
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27
Forestry- ICAR JRF/SRF 2024
MCQ (Single Correct)
Which theory is most suited for formation of warm clouds
Warm Clouds (Temperature $\gt 0^\circ\text{C}$ throughout): Completely lack ice crystals; rainfall is generated exclusively via the Collision-Coalescence theory (Bowen & Langmuir), where larger droplets falling faster sweep up and coalesce with smaller droplets.
Cold Clouds: Rain develops via the Bergeron-Findeisen ice crystal process. (Correct answer: Option 1)
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28
Forestry- ICAR JRF/SRF 2024
MCQ (Single Correct)
Bilinear interpolation is the type of Interpolation where for each new location the intensity of the
2D spatial resampling technique in digital image processing.
Calculates the output digital number (DN) by computing a distance-weighted linear average across the four nearest neighboring pixels surrounding the transformed coordinates. (Correct answer: Option 1)
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29
Forestry- ICAR JRF/SRF 2024
MCQ (Single Correct)
Sentinel-2 satellite contains how many spectral bands ?
The standard reference crop ($ET_0$) is mathematically defined as a hypothetical cool-season green grass reference crop with specific bio-physical characteristics:
Assumed uniform crop height of 0.12 m (12 cm)
Fixed surface resistance of $70\text{ s/m}$
Albedo of $0.23$. (Correct answer: Option 1)
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