Jharkhand is the 14th most populous state in India.

The first revolt against the British East India Company was the Chuar revolt led by Jagannath Singh in 1766.

The literacy rate of Jharkhand in 2011 was 66.41%.

In 1936, all nine states were transferred to the Eastern States Agency, the officials of which came under the direct authority of the Governor-General of India, rather than under that of any provinces.

Ranchi is the capital city of Jharkhand.

In 1928, Unnati Samaj, the political wing of the Christian Tribals Association, demanded a separate tribal state in eastern India. They submitted a memorandum to the Simon Commission, which was appointed by the British government to study constitutional reforms in India. This demand for a separate tribal state reflected the aspirations of various tribal communities for self-governance and protection of their cultural identity.

Babulal Marandi took the oath as Chief Minister of Jharkhand on 15 November 2000, which coincided with the birth anniversary of tribal leader Birsa Munda. This date holds cultural and historical significance for the state.

Answer: a) Hindi

Explanation: Hindi is the most widely spoken language in Jharkhand. Other languages spoken in the state include Bengali, Santhali, and Bhojpuri.

The INC 53rd Session took place in March 1940 in Ramgarh (now Ramgarh Cantonment) under the presidency of Maulana Abul Kalam Azad, a prominent leader of the Indian National Congress. This session was significant in the context of the Indian freedom movement. During the session, various prominent leaders such as Mahatma Gandhi, Jawaharlal Nehru, Sardar Patel, Rajendra Prasad, Sarojini Naidu, Khan Abdul Ghaffar Khan, Acharya J.B. Kripalani, and industrialist Jamnalal Bajaj were present. It provided a platform for these leaders to discuss and strategize the future course of the freedom movement. Mahatma Gandhi also inaugurated the khadi and village Industries Exhibition at Ramgarh, emphasizing the importance of self-sufficiency and rural empowerment. This session marked an important milestone in the collective efforts of leaders and activists in their pursuit of India's independence from British colonial rule.

Ram Shah, a ruler of Jharkhand during the 17th century, built the Kapilnath Temple in 1643.