A. SAR=Na / [(Ca+Mg)1/2] Na x 2
B. SAR=Na / CEC x 100
C. SAR=Na / CEC x 100
D. None of these
Related Mcqs:
- The exact formula for sodium hexametaphosphate is___________________?
A. [(NaPO6)13]
B. [(NaPO3)13]
C. [(NaPO2)6]
D. None of the above - Most abundant mineral in the earth crust is______________________?
A. N-Feldspar
B. Feldspar
C. S-Feldspar
D. Amplubole - Rhyolite in nature is______________________?
A. Acidic
B. Basic
C. Both a & b
D. None of the above - A soil is categorized as saline when EC of saturation extract is______________________?
A. >4dsm-1
B. 0.4dsm-1
D. 0.4 4.0 dsm-1 - Addition of sodium hexametaphosphate in soil for determination of soil texture causes__________________?
A. Agregation of soil particles
B. Cementing of soil particles
C. Dispersion of soil particles
D. All the above - The conductivity of a saturation extract is greater 4 dsm-1 an exchangeable sodium percentage (ESP) of less than 15 and the pH is usually less than 8.5 is called as__________________?
A. Saline soils
B. Saline-sodic soils
C. Sodic soils
D. Neutral soils - An exce4ption of Mendel’s law is______________________?
A. Dominance
B. Liukage
C. Independent assortment
D. Purity of gametes - The storage life of fresh apples at -1 to -4ºc is______________________?
A. 4-10 weeks
B. 10-20 weeks
C. 8-30 weeks
D. 20-25 weeks - In dairy products such as cheese and condensed milk the preservative used is______________________?
A. Epexider
B. Parabens
C. Nisim
D. All the above - The concentration of ethylene required for the ripening of Banana is______________________?
A. 5 ppm with 24 hr
B. 10 ppm with 24 hr
C. 12 ppm with 24 hr
D. 15 ppm with 24 hr
