Q. Consider the following:
  1. Mir Space Station
  2. Salyut 1
  3. Skylab
  4. Tiangong 1
Which of the above were developed by the Soviet Union?

Answer: Only 1, 2 & 5
Notes: Mir, Salyut 1, and the Almaz series were developed by the Soviet Union. Skylab was developed by the United States, and Tiangong 1 was developed by China. Thus, the correct options indicating space stations developed by the Soviet Union are Mir (1), Salyut 1 (2), and Almaz (5).