For his contribution to the field of education, he received the Padma Shri, India's fourth highest civilian honour, in 1969.
He studied at Government College, Lahore, where, apart from academics, he made a mark as a sportsman in the disciplines of association football, boxing and swimming.
He obtained his Master's degree in physics in 1932.. Kapur started his career as a teacher in 1933, in Mayo College, Ajmer.
Sardar Bhagwant Singh, a member of the management, had this to say: "On just going through the bio-data of the applicants we all thought to ourselves - the cheek of this young man to apply for the post of the Principal of Modern School!
To celebrate his birth centenary, Modern School Old Students' Association organised a series of events in 2010-2011.