The first Prime Minister of India was Jawaharlal Nehru, who assumed office in: MCQ with Answer and Explanation

Explanation:
Operation Polo was the police action in September 1948 to annex the princely state of Hyderabad into the Indian Union.

Explanation:
The Moplah Rebellion (also known as the Malabar Rebellion) occurred in 1921 in the Malabar region of Kerala. It was led by Muslim peasants (Moplahs) against the British and Hindu landlords.

Explanation:
Lala Lajpat Rai was injured during a police lathi charge while leading a protest against the Simon Commission in Lahore on October 30, 1928. He died on November 17, 1928, from his injuries.