The Cabinet Mission Plan was proposed in: MCQ with Answer and Explanation

Explanation:
The Poona Pact was an agreement reached between Dr. B. R. Ambedkar and Mahatma Gandhi on behalf of depressed classes for reservation of seats in provincial legislatures, abandoning separate electorates.

Explanation:
The All India Kisan Sabha was founded in Lucknow in 1936, with Swami Sahajanand Saraswati as its first president.

Explanation:
Siraj-ud-Daulah, the young Nawab of Bengal, attacked and captured Calcutta in June 1756, and the alleged suffocation of British prisoners in a small cell became known as the 'Black Hole of Calcutta'.