The correct option is (a).
Explanation
Industries are classified on the basis of ownership into four distinct categories: Private Sector, Public Sector, Joint Sector, and Cooperative Sector. This classification defines who owns, manages, and controls the industrial unit.
Statement-wise Analysis:
- Statement 1 is Correct: The Joint Sector industries are owned and operated jointly by the state (government) and individuals or a group of individuals. This model combines public interest with private enterprise. A classic example is Maruti Udyog Ltd. (in its earlier structure).
- Statement 2 is Incorrect: The joint sector is not strictly restricted to the defense sector. Historically, the defense sector in India was reserved exclusively for the Public Sector due to national security concerns. The joint sector operates in various domains, including oil, petrochemicals, and automotive industries (e.g., Oil India Ltd. is often cited as a joint venture in specific contexts, though ownership structures evolve).
- Statement 3 is Incorrect: Sudha Dairy (Bihar State Milk Co-operative Federation Ltd.) is an example of the Cooperative Sector, not the joint sector. Cooperative sector industries are owned and operated by the producers or suppliers of raw materials, workers, or both. Prominent examples include Amul (Anand Milk Union Limited) and Sudha Dairy.
Key Takeaway:
The Joint Sector is a partnership between the government and private individuals (State + Private), whereas the Cooperative Sector is owned collectively by the producers or suppliers of raw materials (e.g., dairy farmers).