Q. Who authored the Punjabi encyclopedia 'Mahan Kosh'?
Answer:
Bhai Kahn Singh Nabha
Notes: Bhai Kahn Singh Nabha (1861–1938) compiled 'Mahan Kosh', the first Punjabi encyclopedia, published in 1930 by Sikh Gurudwara Prabandhak Committee. It covers Sikhism, history, literature, and linguistics, and is widely regarded as a reference work in Punjabi language and Sikh literature.