Direction: The question below consists of a set of labelled sentences. Out of…

Para-jumble questions test whether you can restore paragraph coherence: the correct order begins with the sentence that introduces the topic without depending on anything earlier, and every sentence after it must have its pronouns, articles, and connectors satisfied by a sentence that already came before it.

Applying this to the four sentences:

1. Q introduces the topic on its own — 'The problem of smog in Delhi just as winter sets in has become alarming' — with no pronoun needing an earlier antecedent, so Q must open the paragraph.

2. P follows Q: 'It further escalates exponentially...' — 'It' refers back to the smog problem named in Q, and 'further' signals this sentence extends what Q just stated.

3. S comes next: 'Environmental organizations have requested for a partial ban...' — a new development that follows naturally from the escalating problem in P.

4. R closes the sequence: 'Heeding to such requests, the Supreme Court has decided...' — 'such requests' is a direct callback to the request just described in S, so R must sit immediately after S.

5. Chaining these links gives the order Q - P - S - R.

Cross-check by reading the paragraph straight through in this order:

The problem of smog in Delhi just as winter sets in has become alarming in the last few years. It further escalates exponentially with the burning of firecrackers on major festivals at this time. Environmental organizations have requested for a partial ban on burning of firecrackers. Heeding to such requests, the Supreme Court has decided to fix a time period beyond which burning of firecrackers will not be allowed.

This confirms the correct order of the sentences is QPSR.