was he involved in freedom struggle?
Yes, he joined the Indian struggle for independence.
Role in the Indian independence movement
Reddy joined the Indian struggle for independence from the British Raj following Mahatma Gandhi's visit to Anantapur in July 1929 and dropped out of college in 1931. 
who was the first president of india to be elected unopposed Neelam Sanjiva Reddy
Yes, he joined the Indian struggle for independence from the British Raj following Mahatma Gandhi's visit to Anantapur in July 1929 and dropped out of college in 1931. Yes, he joined the Indian struggle for independence from the British Raj Yes, in the Quit India Movement.
Neelam Sanjiva Reddy Neelam Sanjiva Reddy Neelam Sanjiva Reddy
Role in the Indian independence movement Role in the Indian independence movement Introduction
Reddy joined the Indian struggle for independence from the British Raj following Mahatma Gandhi's visit to Anantapur in July 1929 and dropped out of college in 1931.  Reddy joined the Indian struggle for independence from the British Raj following Mahatma Gandhi's visit to Anantapur in July 1929 and dropped out of college in 1931 He quit to become an Indian independence activist and was jailed for participating in the Quit India Movement. 
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Neelam Sanjiva Reddy [SEP] Role in the Indian independence movement
Reddy joined the Indian struggle for independence from the British Raj following Mahatma Gandhi's visit to Anantapur in July 1929 and dropped out of college in 1931. He was closely associated with the Youth League and participated in a student satyagraha. In 1938, Reddy was elected Secretary of the Andhra Pradesh Provincial Congress Committee, an office he held for ten years. During the Quit India Movement, he was imprisoned and was mostly in jail between 1940 and 1945. Released in March 1942, he was arrested again in August and sent to the Amraoti jail where he served time with activists T Prakasam, S.