AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
The government allowed only essential imports and restricted non-essential ones to protect domestic industries from foreign competition. For example, India allowed imports of machinery, fertilisers, and petroleum, but restricted consumer goods.
The key principle is protection of domestic producers — especially infant industries in the 1950s–60s. Examiners expect you to state the principle and back it with a specific example from the text (machinery/fertilisers/petroleum). Avoid vague answers like "to control trade."