SSC CGL 2021 PYQ — Question 33

SSC CGL - 13 Aug 2021 - Shift 1 • General Awareness • Q33

Which of the following is a process in which hot, less dense materials rise upward and are replaced by colder, more dense materials?

Show answer & explanation

Correct answer: D

Explanation

The correct answer is option 4 i.e. Convection.

  • Convection is a process in which heat is transferred from a solid surface to a nonsolid, such as air or water.
  • This process involves the motion of the fluid relative to the solid surface and the processes by which heat is transferred across the interface.