Answer (Detailed Solution Below)

Option 2 : Troposphere
Free
RRB NTPC Graduate Level Full Test - 01
2.4 Lakh Users
100 Questions 100 Marks 90 Mins

Detailed Solution

Download Solution PDF

The correct answer is Troposphere.

Important Points

  • The air is a mixture of several gases and it encompasses the earth from all sides.
  • The air surrounding the earth is called the atmosphere.

Key Points

  • The troposphere is the lowermost layer of the atmosphere.
  • The height of this layer is about 18 km on the equator and 8 km on the poles.
  • The thickness of the troposphere is greatest at the equator because heat us transported to great heights by strong convectional currents.
  • All phenomena of climate and weather, which physically affects the man, takes place with in this layer.
  • The temperature decreases with increasing height of the atmosphere.
  • It decreases at the rate of 1 degree Celsius for every 165 m of height.
    • This is called Normal Lapse Rate.
  • The zone separating the troposphere from the stratosphere is known as the tropopause.
    • The air temperature at the tropopause is about – 80 degree Celsius over the equator and about – 45 degree Celsius over the poles.
    • The temperature here is almost constant.
Latest RRB NTPC Updates

Last updated on Jul 10, 2025

-> RRB NTPC Under Graduate Exam Date 2025 has been released on the official website of the Railway Recruitment Board.

-> The RRB NTPC Admit Card will be released on its official website for RRB NTPC Under Graduate Exam 2025.

-> Candidates who will appear for the RRB NTPC Exam can check their RRB NTPC Time Table 2025 from here. 

-> The RRB NTPC 2025 Notification released for a total of 11558 vacancies. A total of 3445 Vacancies have been announced for Undergraduate posts like Commercial Cum Ticket Clerk, Accounts Clerk Cum Typist, Junior Clerk cum Typist & Trains Clerk.

-> A total of 8114 vacancies are announced for Graduate-level posts in the Non-Technical Popular Categories (NTPC) such as Junior Clerk cum Typist, Accounts Clerk cum Typist, Station Master, etc.

-> Prepare for the exam using RRB NTPC Previous Year Papers.

-> Get detailed subject-wise UGC NET Exam Analysis 2025 and UGC NET Question Paper 2025 for shift 1 (25 June) here

More Climatology Questions

Get Free Access Now
Hot Links: teen patti rich teen patti bonus teen patti all game teen patti rummy 51 bonus teen patti master new version