Directions: Read the following information and give answer.A, B. C, D and E are five friends. B is elder to E, but not as tall as C. C is younger to A. and is taller to D and E. A is taller to D, but younger than E. D is elder to A but is shortest in the group.Which of the following pairs of students is elder to D?
Correct answer: C. BE
- A. BA
- B. BC
- C. BE
- D. None of these
Explanation
To solve the problem, we need to deduce the chronological order of the friends' ages based on the given clues:1. B is elder to E.2. C is younger than A and taller than D and E.3. A is taller than D, but younger than E.4. D is elder to A, but shortest in the group.From these clues, we know:B > E (B is elder than E)D > A (D is elder than A)A > C (A is elder than C)E > A (E is elder than A)Thus, since B > E > A > C and D > A, we logically determine that B and E are both elder to D. Therefore, the correct pair is BE.
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About Alkyl Halides
Alkyl halides are named and related to their carbon-halogen structure, polarity and reactivity. The key reactions are nucleophilic substitution by SN1 and SN2 mechanisms and elimination by E1 and E2 mechanisms, including how substrate structure, nucleophile, base, solvent and temperature influence substitution versus elimination.
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