Step 1: Understanding the Concept:
The question asks to identify the leader and main ideologue of the short-lived but influential artists' collective, Group 1890.
Step 2: Detailed Explanation:
Group 1890 was formed in 1962 in Bhavnagar, Gujarat. The group, comprising twelve artists, sought to create an art that was modern and authentically Indian, independent of both the Bengal School's revivalism and the Western academic styles. The name "Group 1890" came from the house number of J. Pandya, where the group's manifesto was written. The artist, writer, and activist J. Swaminathan was the group's founder, leader, and chief spokesperson. He wrote their manifesto and was the driving intellectual force behind their vision of a "living, struggling Indian art." While Jeram Patel was a prominent member, Swaminathan was the undisputed leader. K.C.S. Paniker was associated with the Cholamandal Artists' Village in Madras and was not part of this group.
Step 3: Final Answer:
Group 1890 was formed under the leadership of J. Swaminathan.
Match List-I with List-II
\[\begin{array}{|l|l|} \hline \text{List-I (Soil component)} & \text{List-II (Definition)} \\ \hline (A)~\text{Azonal soils} & (I)~\text{An individual natural aggregate of soil particles.} \\ (B)~\text{Regoliths} & (II)~\text{Organisms living in the soil or ground} \\ (C)~\text{Ped} & (III)~\text{Soils have uniformity from the top-surface to the base, and do not have well-developed soil horizons.} \\ (D)~\text{Edaphons} & (IV)~\text{Zone of loose and unconsolidated weathered rock materials.} \\ \hline \end{array}\]
Choose the correct answer from the options given below:
Match List-I with List-II
\[\begin{array}{|l|l|} \hline \text{List I Content of humus} & \text{List II Percentage of contents} \\ \hline \text{(A) Carbon} & \text{(I) 35-40\%} \\ \hline \text{(B) Oxygen} & \text{(II) ~5\%} \\ \hline \text{(C) Hydrogen} & \text{(III) 55-60\%} \\ \hline \text{(D) Nitrogen} & \text{(IV) 15\%} \\ \hline \end{array}\]
Choose the correct answer from the options given below: