The question contains pairs of words that are related to each other in a certain way. Three of the following four word pairs are alike as these have the same relationship and thus form a group. Which word pair is the one that DOES NOT belong to that group? (The words must be considered as meaningful English words and must not be related to each other based on the number of letters / number of consonants/vowels in the word.)
- (a)Eye – ophthalmologist
- (b)Bone – orthopaedic
- (c)Stomach – gastroenterologist
- (d)Uterus – urologist
Answer
Why
Correct — D. Rule: organ paired with the specialist who treats that organ.
Eye and ophthalmologist, bone and orthopaedic, stomach and gastroenterologist all fit the phrase.
A urologist treats the urinary tract — kidneys, ureters, bladder, urethra — and the male reproductive organs. The uterus is not among them; it belongs to the gynaecologist.
So the pair that breaks the group is Uterus – urologist, option (d).
Why the others are wrong
- (a)Eye – ophthalmologist — Eye – ophthalmologist fits the group exactly: an ophthalmologist is the doctor who treats eye disease, so this pair belongs and cannot be the odd one out.
- (b)Bone – orthopaedic — Bone – orthopaedic fits: orthopaedics is the branch that treats bones and joints. The paper prints the adjective rather than 'orthopaedist', but the organ-to-specialist link holds.
- (c)Stomach – gastroenterologist — Stomach – gastroenterologist fits: a gastroenterologist treats the stomach and the rest of the digestive tract, so this pair keeps the group's relationship.
Concept
Odd-one-out word pairs are decided by the *relationship*, not by the words. Name the relationship in one short phrase, then test all four pairs against that phrase.
Here the phrase is 'organ treated by this specialist'. Three pairs satisfy it. The fourth puts the uterus with a urologist, and the two specialties are distinct: urology covers the urinary system, gynaecology the female reproductive system.
The pairing looks plausible only because the uterus and the bladder both sit in the pelvis.
The bracketed note bars solving the item on letter counts or vowel counts, so the medical fact is the whole of the question. Reproduce the paper's own wording when you revise it: it prints 'orthopaedic', not 'orthopaedist'.
Key facts
- A urologist treats the urinary tract in both sexes and the male reproductive organs.
- Disorders of the uterus are treated by a gynaecologist.
- An ophthalmologist is a medical doctor who treats eye disease, including by surgery.
Study next
Common traps
- Choosing a pair because one word is unfamiliar rather than because the relationship breaks
- Reading the uterus as a urinary organ because it sits beside the bladder
- Comparing the pairs by letter count, which the bracketed note rules out
The stem carries the note that the words are meaningful English words, not to be compared by letters or vowels. It also runs at 9 Sep 2024, 9:00, Reasoning Q.6, where the pairs are shapes and their number of sides.
Related PYQs
No directly related past PYQ was found.