Soil colour determination chroma refers to which of the following
A. Dominant spectral colour
B. Lightness or darkness of the colour
C. Purity or strength of colour
D. None of these
Answer: Option C
A. Dominant spectral colour
B. Lightness or darkness of the colour
C. Purity or strength of colour
D. None of these
Answer: Option C
Sources of negative charges on silicate clays is/are
A. Exposed crystal edges
B. Isomorphus substitution
C. Anion exchange
D. All of these
The most conspicuous chemical change that take place when soil is flooded is reduction of
A. Fe
B. P
C. S
D. None of these
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