CSS past paper

CSS Environmental Science Past Paper 2022

CSS Environmental Science 2022 carries 100 marks over 3 hours. It has 7 questions.

Years

How to attempt: Attempt ONLY FOUR questions from Part-II, All questions carry equal marks.

This paper comes from a retyped copy, as no printed FPSC copy was available. Its wording may differ slightly from the original.

Question 1 (Part I) is the paper's MCQs, which are not reproduced here.

Q. 2
Why are environmentalists are interested in wetlands? Describe various mechanisms for sustainable management of wetlands in Pakistan.
Q. 3
Write in detail the history and main features of the Indus Water Treaty with a special focus on its significance in the current scenario of water stress in Pakistan.
Q. 4
What is anaerobic degradation? Describe the four key stages in the anaerobic degradation of organic waste.
Q. 5
What are the potential environmental impacts of China Pakistan Economic Corridor (CPEC)?
Q. 6
If the population of the top carnivores declines, what will happen to the landscape ecosystems?
Q. 7
What is the ozone layer? Explain its depletion resulting from the atmospheric NO, H, OH, and Cl.
Q. 8
Write short notes on any FOUR of the following:
- (1)
  GIS and RS
- (2)
  Biodiversity loss
- (3)
  Atmospheric smog
- (4)
  Population
- (5)
  Air Pollution
- (6)
  Green House Gases

Part-II is to be attempted on the separate Answer Book.
Attempt ONLY FOUR questions from Part-II, All questions carry equal marks.
All the parts (if any) of each question must be attempted at one place instead of at different places.
Write Q. No. in the Answer Book in accordance with Q. No. in the Q. paper.
No page/ space be left blank between the answers. All blank pages of Answer Book must be crossed
Extra attempt of any question or any part of the question will not be considered