Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
Directions: In the following question, the first and the last parts of the sentence are numbered S₁ and S₆. The rest of the sentence is split into four parts named P, Q, R, and S. These four parts are not given in proper order. Read the sentence carefully and choose the correct order from the given options. S₁: Pollution is one of the evils brought about by the growth of science. P. Air pollution has very harmful effects. Q. They pollute the air and the atmosphere. R. It is making the environment, water and air dirty. S. Factories and industries keep throwing out smoke which contains toxic gases. S₆: People living in the surroundings breathe the impure air and are affected by diseases of the lungs and heart.
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
S₁ states that pollution is an evil caused by scientific growth. R (it is making the environment, water and air dirty) directly explains the effect of pollution named in S₁, so R follows S₁. S (factories and industries keep throwing out smoke...) then specifies a primary source causing that dirtiness. Q (“They pollute the air and the atmosphere”) refers back to those factories/industries and states the consequence of their emissions. P (Air pollution has very harmful effects) is a general statement of impact that naturally follows the pollution-causing actions, and S₆ then gives the specific health consequences.