In this question there is 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. 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.