Which Indian scientist is known for his crucial role in the development of India's missile and nuclear weapons programmes?
A) A. P. J. Abdul Kalam
B) C. V. Raman
C) Jagadish Chandra Bose
D) Har Gobind Khorana

Hint: He was an aerospace scientist. He was also known as people’s president. He was a great visionary leader. There are many famous books written by him, among them one is “India:2020.”

Complete step by step solution:
This is a straightforward question. The answer is known to many of us. He is known other than Dr. A. P. J. Abdul Kalam.

Hence option (A) is the correct answer.

Additional Information:
Avul Pakir Jainulabdeen Abdul Kalam, popularly known as Dr. A. P. J. Abdul Kalam, was an Indian aerospace scientist and politician. He was elected as the 11th President of India from 2002 to 2007. He was named as the “People’s President” in his tenure. He was born and raised in Rameshwaram, Tamil Nadu and studied physics and aerospace engineering. He spent the next about forty years as a scientist and science administrator, mainly at the Defense Research and Development Organization (DRDO) and Indian Space Research Organization (ISRO) and was intimately involved in India's civilian space programme and military missile development efforts. Due to this he came to be known as the Missile Man of India for his work on the development of ballistic missile and launch vehicle technology. He remained President for only a single term and then returned to become a normal civilian. He won many awards, including the prestigious Bharat Ratna. Being a writer he wrote many books like “Wings of Fire”, “India : 2020” and many others.

Note: Do some research about the other persons mentioned as well. They have also contributed very much to the field of Science and Technology.