In this section each item consists of six sentences of a passage. The first and sixth sentences are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up and labelled as P, Q, R and S. You are required to find the proper sequence of the four sentences and mark your response accordingly on the Answer Sheet.
S1: On increasing the temperature of solids, the kinetic energy of the particles increases.
S6: The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its melting point.
P: A stage is reached when the solid melts and is converted to a liquid.
Q: Due to the increase in kinetic energy, the particles start vibrating with greater speed.
R: The particles leave their fixed positions and start moving more freely.
S: The energy supplied by heat overcomes the forces of attraction between the particles.
The correct sequence should be
- AQSRP
- BQRSP
- CPRSQ
- DSPRQ
Explanation
This is the physical sequence of melting: S1 (heating raises kinetic energy) → Q (particles vibrate faster, the immediate effect) → S (heat overcomes the forces of attraction) → R (particles leave fixed positions and move freely) → P (the solid melts into a liquid). S6 then defines 'melting point' — the endpoint of P's transformation — so it must close the paragraph. Any other order breaks the cause-and-effect chain of melting. Hence (A) QSRP is correct.