21. Universal soil loss equation Q=R * 1९ * 1, * 8 * ¢ * P. Where, Q is the predicted annual soil
loss, and * is the multiplication symbol. Considering the other symbols, which of the
following statement/statements is or are true?

(1)

(8)

(4)

R = rainfall erosivity, K = soil erodibility, L = slope length, S = slope gradient or
steepness, C = Cover, management and P = erosion-control practices

R = total rainfall, K = soil texture, L = slope length, S = slope gradient or steepness,
C = cation exchange capacity and P = available phosphorous

R = rainfall erosivity, K = soil bulk density, L = slope length, S = slope gradient or
steepness, C = cover, management and P = penetrability of the soil

By management practices if any one factor in the equation is brought to zero, the
resulting anoint of erosion (Q) would also be reduced to zero.

(^) 1 and 2 are correct (B) 3 and 4 are correct

(C) land 4 are correct (D) None of the above

22. Ifthe elevation difference is 70 mover a horizontal distance of 100 m, then :

(1)
(2)

the slope gradient is 10%.

The slope angle is approximately 35°.
(^) (1) alone is correct

൯) (2) alone is correct

(C) (1) and (2) are correct

(D) None of the above is correct

23. The nano fertilisers should have a size dimension of :

(1)
(2)
(8)

Less than 100 nm at least in one-dimension

Less than 100 nm in two-dimensions

More than 200 nm in all three dimensions.

(^) 1 alone is correct (B) 2 alone is correct

(0) 1and 2 are correct (D) None of the above is correct

24. Ina dry farming situation, the recommended set of crops may be :

(1)
(2)

002/2024

Pennesitum americanum, Cajanus cajan, Moringa oleifera,
Oryza sativa, Lycopersicon esculentum (Mill.)
(ಹ) lis correct and 2 is wrong (B) 2 is correct and 1 is wrong

(C) Option A is wrong (D) Option B is right