Step 1: Understanding the Concept:
The question asks for the popular name of the constitutional reforms introduced by the British in India in 1919.
Step 2: Detailed Explanation:
\[\begin{array}{rl} \bullet & \text{The Government of India Act, 1919 is popularly known as the Montagu-Chelmsford Reforms. This is because the reforms were formulated based on the recommendations in a report by Edwin Montagu, the Secretary of State for India, and Lord Chelmsford, the Viceroy of India at the time. } \\ \bullet & \text{The other options are incorrect:} \\ \bullet & \text{The Ilbert Bill was introduced in 1883.} \\ \bullet & \text{The Indian Statutory Commission is the official name for the Simon Commission (1928).} \\ \bullet & \text{The Nehru Report (1928) was a memorandum outlining a proposed new dominion status constitution for India.} \\ \end{array}\]
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Step 3: Final Answer:
The other name for the Government of India Act, 1919 is the Montagu-Chelmsford Reforms.