In this section, each item consists of six sentences. The first and sixth sentences are marked as S1 and S6. The four sentences between S1 and S6 have been jumbled up and labelled as P, Q, R and S. This is followed by four options, each suggesting a sequence of sentences. Identify the most appropriate option and mark your response on the Answer Sheet accordingly.
S1: Civilization dawned when early man learnt how to produce heat and energy by burning wood.
S6: When they have been used, they cannot be replaced.
P: Then steam was used to produce electricity.
Q: In this century great use has been made of oil and natural gas and the use of atomic reactors also has provided another source of energy.
R: Much later, the first industrial revolution was based on the production of steam by burning coal.
S: But none of these fuels is renewable.
- APRQS
- BRQSP
- CRPQS
- DRPSQ
Explanation
R comes first with its 'Much later', moving the timeline from S1's early man to the industrial revolution's steam-from-coal. P's 'Then' carries the steam story forward into electricity generation. Q brings it to the present century - oil, natural gas and atomic reactors. S then delivers the warning that none of these fuels is renewable, which S6 seals: once used, they cannot be replaced. Hence RPQS, option C, is correct.