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Categorical (Logic) Solved Questions & Notes (2026) - Apex Rankers

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15 Total Solved Questions
~23 mins Estimated Reading Time
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Categorical

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15 Questions in this set
Relationship among Classes of Things: In this part, you are to choose from five diagrams the one that illustrates the relationship among three given classes better than any of the other diagrams offered. There are three possible relationships between any two different classes: (1) One class completely contained in the other but not vice versa (Concentric); (2) Neither class is completely contained in the others but the two do have members in common (Overlapping); (3) There are no members in common (Separate).
Passage Reference Diagram
Q. 1 Intelligence Tests
Difficulty: Hard (1 Mark)
Metals, Iron, sulphur.
A
(a)
B
(b)
C
(c)
✓ Correct
D
(d)
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
Iron is a metal (concentric subset), whereas sulphur is a non-metal (separate element). Thus, diagram (c) illustrates this relationship correctly.
Q. 2 Intelligence Tests
Difficulty: Hard (1 Mark)
Males, squirrels, chipmunks.
A
(a)
B
(b)
C
(c)
✓ Correct
D
(d)
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
Squirrels and chipmunks are two mutually exclusive species, but both have male members (overlapping with males). Thus, diagram (c) correctly represents this relationship.
Q. 3 Intelligence Tests
Difficulty: Hard (1 Mark)
Musicians, oboists, science-fiction enthusiasts.
A
(a)
B
(b)
✓ Correct
C
(c)
D
(d)
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
All oboists are musicians (concentric subset). Some musicians and some oboists may be science-fiction enthusiasts (overlapping). Thus, diagram (b) correctly illustrates this relationship.
Q. 4 Intelligence Tests
Difficulty: Hard (1 Mark)
Actresses, Human females, golfers.
A
(a)
B
(b)
✓ Correct
C
(c)
D
(d)
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
All actresses are human females (concentric subset). Some human females and actresses may be golfers (overlapping). Thus, diagram (b) represents this relationship correctly.
Q. 5 Intelligence Tests
Difficulty: Hard (1 Mark)
Communication devices, telephones, eating utensils.
A
(a)
B
(b)
✓ Correct
C
(c)
D
(d)
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
Telephones are a specific type of communication device (concentric subset), while eating utensils are a completely separate category. Thus, diagram (b) is correct.
Q. 6 Intelligence Tests
Difficulty: Hard (1 Mark)
Comedians, entertainers, mimes.
A
(a)
B
(b)
C
(c)
D
(d)
✓ Correct
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
Both comedians and mimes are types of entertainers (concentric within entertainers), and an entertainer can be both a comedian and a mime (overlapping). Thus, diagram (d) is correct.
Q. 7 Intelligence Tests
Difficulty: Hard (1 Mark)
Two-legged animals, jungle animals, jungle bipeds.
A
(a)
B
(b)
✓ Correct
C
(c)
D
(d)
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
Jungle bipeds are defined as two-legged jungle animals, meaning they lie at the intersection of two-legged animals and jungle animals (concentric within the overlap). Thus, diagram (b) is correct.
Q. 8 Intelligence Tests
Difficulty: Hard (1 Mark)
Dogs, cocker spaniels, showdogs.
A
(a)
B
(b)
C
(c)
D
(d)
E
(e)
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
All cocker spaniels are dogs (concentric). Showdogs can be dogs (and some showdogs are cocker spaniels, while other showdogs may be other breeds). Thus, diagram (e) is correct.
Q. 9 Intelligence Tests
Difficulty: Hard (1 Mark)
Daisies, flower, cherries.
A
(a)
✓ Correct
B
(b)
C
(c)
D
(d)
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
Daisies are a type of flower (concentric subset), while cherries are a fruit (separate class). Thus, diagram (a) correctly represents this relationship.
Q. 10 Intelligence Tests
Difficulty: Hard (1 Mark)
Members of Congress, senators, Republicans.
A
(a)
B
(b)
✓ Correct
C
(c)
D
(d)
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
All senators are members of Congress (concentric subset). Republicans can be senators, other members of Congress, or non-members (overlapping). Thus, diagram (b) is correct.
Q. 11 Intelligence Tests
Difficulty: Hard (1 Mark)
The human race, human adults, females.
A
(a)
B
(b)
✓ Correct
C
(c)
D
(d)
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
Both human adults and females are subsets of the human race (concentric), and they overlap with each other (female adults). Thus, diagram (b) is correct.
Q. 12 Intelligence Tests
Difficulty: Hard (1 Mark)
Cinnamon, spices, cloves.
A
(a)
B
(b)
C
(c)
D
(d)
✓ Correct
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
Both cinnamon and cloves are distinct types of spices (two separate subsets inside spices). Thus, diagram (d) correctly represents this relationship.
Q. 13 Intelligence Tests
Difficulty: Hard (1 Mark)
Diamonds, precious stones, emeralds.
A
(a)
B
(b)
C
(c)
D
(d)
✓ Correct
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
Both diamonds and emeralds are mutually exclusive types of precious stones (concentric subsets inside precious stones with no overlap). Thus, diagram (d) is correct.
Q. 14 Intelligence Tests
Difficulty: Hard (1 Mark)
The universe, our solar system, the earth.
A
(a)
B
(b)
C
(c)
D
(d)
E
(e)
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
The earth is contained inside our solar system, which is contained inside the universe (three concentric nested spheres). Thus, diagram (e) is correct.
Q. 15 Intelligence Tests
Difficulty: Hard (1 Mark)
Radicals, energy conservationists, reactionaries.
A
(a)
B
(b)
C
(c)
✓ Correct
D
(d)
E
(e)
💡 Step-by-Step Explanation & Concept Rationale
Radicals and reactionaries hold opposing political views, but both categories can overlap with energy conservationists. Thus, diagram (c) correctly illustrates this relationship.
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