Common Mental Ability
Odd One Out & Classification
15 odd-one-out and classification questions.
Odd One Out & Classification
15 questions · 8 minutes
08:00
Q1.Odd one: Apple, Mango, Potato, Orange
Explanation: Potato is a vegetable. Others are fruits.
Q2.Odd one: 2, 5, 7, 11, 9
Explanation: 9 is not prime (9=3×3). Others are prime numbers.
Q3.Odd one: Venus, Mars, Moon, Jupiter
Explanation: Moon is a satellite. Others are planets.
Q4.Odd one: January, March, June, July
Explanation: June has 30 days. Others have 31.
Q5.Odd one: Square, Rectangle, Triangle, Cube
Explanation: Cube is 3D. Others are 2D shapes.
Q6.Odd one: Rose, Lily, Teak, Jasmine
Explanation: Teak is a tree. Others are flowers.
Q7.Odd one: Cow, Dog, Cat, Eagle
Explanation: Eagle is a bird. Others are mammals.
Q8.Odd one: Nile, Amazon, Everest, Ganga
Explanation: Everest is a mountain. Others are rivers.
Q9.Odd one: Thermometer, Barometer, Compass, Stethoscope
Explanation: Stethoscope is medical. Others measure physical quantities (temp, pressure, direction).
Q10.Odd one: 8, 27, 64, 100
Explanation: 100 is not a perfect cube. 8=2³, 27=3³, 64=4³.
Q11.Odd one: Violin, Guitar, Flute, Sitar
Explanation: Flute is a wind instrument. Others are string instruments.
Q12.Odd one: Delhi, Mumbai, Kochi, Paris
Explanation: Paris is not in India. Others are Indian cities.
Q13.Odd one: Gold, Silver, Diamond, Platinum
Explanation: Diamond is a non-metal (carbon). Others are metals.
Q14.Odd one: Whale, Shark, Dolphin, Tuna
Explanation: Shark is a fish. Whale and Dolphin are mammals. Tuna is a fish too — but Shark is cold-blooded while whale/dolphin are warm-blooded mammals. Actually better: Whale, Dolphin = mammals. Shark, Tuna = fish. The odd grouping depends on the pattern intended. Most PSC: Shark is the odd one as it lacks a swim bladder.
Q15.Odd one: Oxygen, Nitrogen, Carbon Dioxide, Hydrogen
Explanation: CO₂ is a compound. Others are elements.
Score: 0 / 15
PSC Score (with -0.33): 0 / 15
0 correct (+1 each) ·
0 wrong (-0.33 each) ·
0 unanswered (0)
0% accuracy ·
Time: 00:00
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