Cation exchange capacity (CEC) is highest in Vermiculite, followed by Montmorillonite, Illite, and Kaolinite. Vermiculite has a high surface area and charge density. Montmorillonite also exhibits swelling properties and good CEC, while Kaolinite has very low CEC due to its 1:1 clay structure.
English
75 Questions
300 Marks
90 Mins English English20 Questions80 Marks24 Mins English English75 Questions300 Marks90 Mins English(i) Very dark, cracking clay-dominated soils;
(ii) locally called regur, karail, and bhal;
(iii) high clay varying from 30–60%, base-rich;
(iv) occur in Maharashtra, Madhya Pradesh, Gujarat, Rajasthan, Chhattisgarh and some parts of Karnataka and T.N. __________- is called
[A] Black Soils
[B] Alluvial Soils
[C] Red Soils
[D] Laterite and Lateritic Soils
Choose the correct answer from the options given below:
The following is the list of pesticides:
[a] B.H.C.
[b] D.D.T.
[c] NaCN
[d] Heptachlor
[e] Carbendazim
Choose the correct answer from the options given below:
Which are the fundamental soil-forming process?
[a] Eluviation
[b] Illuviation
[c] Laterization
[d] Humification
Choose the correct answer from the options given below:
Soil water content increasing order:
[A] Field capacity
[B] Oven dry
[C] Hygroscopic
[D] Permanent wilting
Choose the correct answer from the options given below:
Given below are two statements, one is labelled as Assertion (A) and the other one is labelled as Reason (R).
Assertion (A): Water requirement for wheat crops varies from 300 to 600 mm.
Reason (R): Water requirement varies depending on the soil type and rainfall and variety.
In light of the above statements, choose the most appropriate answer from the options given below.
Suggested Test Series
Suggested Test Series
