The Arms Act of 1878 was introduced during the tenure of which Viceroy of British India?
Lord Lytton
The Arms Act of 1878, which restricted Indians' right to possess arms, was introduced during the tenure of Viceroy Lord Lytton.
Lord Curzon, Lord Wellesley and Lord Ripon held office during other periods, not when the Arms Act of 1878 was introduced.
Hence, Lord Lytton is the correct answer.