1. 2. With reference to India’s satellite launch vehicles, consider the following statements:

  1. PSLVs launch the satellites useful for Earth resources monitoring whereas GSLVs are designed mainly to launch communication satellites.
  2. Satellites launched by PSLV appear to remain permanently fixed in the same position in the sky, as viewed from a particular location on Earth.
  3. GSLV Mk III is a four-staged launch vehicle with the first and third stages using solid rocket motors; and the second and fourth stages using liquid rocket engines.

Which of the statements given above is/are correct?

 

 
 
 
 

2. 2. Consider the following:

Birds
Dust blowing
Rain
Wind blowing

Which of the above spread plant diseases?

 
 
 
 

3. 3.What is “Terminal High Altitude Area Defense (THAAD)”, sometimes seen in the news?

 
 
 
 

4. 4,”3D printing” has applications in which of the following?

 
 
 
 

Question 1 of 4