Directions: Read the following information and give answer.In a March Past, seven persons are standing in a row. Q is standing left to R but right to P. O is standing right to N and left to P. Similarly, S is standing right to R and left to T. Find out who is standing in the middle.
Correct answer: B. Q
- A. P
- B. Q
- C. R
- D. S
Explanation
The problem requires arranging seven individuals based on their relative positions. Begin by noting that Q is standing left to R but right to P, establishing an initial sequence: P, Q, R. Next, O is standing right to N and left to P, which positions N, O before P: N, O, P, Q, R. Finally, S is standing right to R and left to T, completing the sequence: N, O, P, Q, R, S, T. With seven individuals in total, the middle position is the fourth one, occupied by Q. Therefore, Q is correctly identified as the person standing in the middle. Other options are incorrect because they do not align with the correct sequence determined by the clues.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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