Classification - Solved Questions and Answers

Last Updated : 4 Apr, 2026

Classification is the process of grouping objects, numbers, letters, or words based on shared characteristics or patterns while identifying the odd one out. It tests the ability to recognize similarities and differences within a given set.

Classification questions and answers are provided below for you to learn and practice.

Question 1: Which of the following is the odd one out?

  1. Lion
  2. Tiger
  3. Cheetah
  4. Wolf
Answer: (4) Wolf

Explanation: 

Lion, Tiger, and Cheetah are all wild cats (felines), while Wolf is a canine.

Question 2: Identify the item that does not belong in the group:

  1. Rose
  2. Tulip
  3. Lotus
  4. Apple
Answer: (4) Apple

Explanation:

Rose, Tulip, and Lotus are flowers; Apple is a fruit.

Question 3: Find the odd number in the following set:

  1. 7
  2. 13
  3. 21
  4. 17
Answer: (3) 21

Explanation: 

21 is not a prime number; the others are prime numbers.

Question 4: Which of the following does not belong to the group?

  1. Spoon
  2. Fork
  3. Knife
  4. Plate
Answer: (4) Plate

Explanation: 

Spoon, Fork, and Knife are eating utensils used to pick or cut food; Plate is used to hold food.

Question 5: Which of the following is the odd one out?

  1. Einstein
  2. Newton
  3. Tesla
  4. Shakespeare
Answer: (4) Shakespeare

Explanation: 

Einstein, Newton, and Tesla are scientists; Shakespeare was a playwright/author.

Question 6: Identify the shape that is different:

  1. Square
  2. Rectangle
  3. Cube
  4. Circle
Answer: (3) Cube

Explanation: 

Square, Rectangle, and Circle are 2D shapes; Cube is a 3D shape.

Question 7: Identify the word that is different from the rest.

  1. Mercury
  2. Moon
  3. Venus
  4. Earth
Answer: (2) Moon

Explanation: 

Mercury, Venus, and Earth are planets; Moon is a natural satellite.

Question 8: Which of the following words does not belong to the group?

  1. Justice
  2. Honesty
  3. Iron
  4. Courage
Answer: (3) Iron

Explanation: 

Justice, Honesty, and Courage are abstract qualities or virtues; Iron is a tangible material (metal).

Question 9: Which word is different from the others?

  1. Running
  2. Swimming
  3. Skating
  4. Reading
Answer: (4) Reading

Explanation:

Running, Swimming, and Skating are physical activities; Reading is not.

Question 10: Select the pair that does not belong with the others.

  1. Pen : Write
  2. Knife : Cut
  3. Spoon : Eat
  4. Book : Read
Answer: (4) Book : Read

Explanation: 

In the other pairs, Pen, Knife and Spoon are tools used to perform actions (write, cut, eat). A book is the object on which the action is performed (you read a book), so this pair is not of the same type as the others.

Question 11: Choose the word which is different from the rest:

  1. Chicken
  2. Snake
  3. Cow
  4. Tiger
Answer: (2) Snake

Explanation:

Snake is a reptile, and Chicken, Cow, and Tiger are not reptiles.

Question 12: Choose the word which is different from the rest:

  1. Assets : Liabilities
  2. Debit : Credit
  3. Income : Expenditure
  4. Advantage : Profit
Answer: (4) Advantage : Profit

Explanation:

Assets and Liabilities, Debit and Credit, and Income and Expenditure are financial terms that show opposing or related concepts, whereas Advantage and Profit are not opposites or related in the same direct manner.

Question 13: Choose the letter group which is different

  1. MTF
  2. SLE
  3. RKD
  4. UNG
Answer: (1) MTF

Explanation:

All groups except MTF follow a pattern where each letter changes systematically by a certain number of positions in the alphabet (for example, SLE → RKL → RKD), while MTF does not follow this sequence.

Question 14: Choose the word which is different from the rest:

  1. Sarangi
  2. Telephone
  3. Saxophone
  4. Xylophone
Answer: (2) Telephone

Explanation:

Sarangi, Saxophone, and Xylophone are musical instruments, while a Telephone is a communication device.

Question 15: Choose the odd word pair:

  1. Wool
  2. Feather
  3. Hair
  4. Grass
Answer: (4) Grass

Explanation:

Wool, Feather, and Hair are organic materials produced by animals, while Grass is a plant

Question 16: Which of the following does not belong to the group?

  1. Hydrogen
  2. Oxygen
  3. Carbon
  4. Brass
Answer: (4) Brass

Explanation:

Hydrogen, Oxygen, and Carbon are elements, while Brass is an alloy composed of copper and zinc.

Question 17: Choose the odd one:

  1. Myanmar
  2. Bangladesh
  3. Bhutan
  4. Thailand
Answer: (4) Thailand

Explanation:

Myanmar, Bangladesh, and Bhutan are all contiguous neighbors of India, share direct borders whereas Thailand, does not share a land border with India.

Question 18: Pick the item that does not fit:

  1. 19
  2. 23
  3. 29
  4. 39
Answer: (4) 39

Explanation:

19, 23, and 29 are prime numbers, whereas 39 is not a prime number.

Question 19: Find the odd pair:

  1. Gold – Chemical
  2. Carrot – Vegetable
  3. Rose – Flower
  4. Apple – Fruit
Answer: (1) Gold – Chemical

Explanation:

Apple, Carrot, and Rose are living organisms related to their categories (Fruit, Vegetable, Flower), while Gold is a metal and not classified as a chemical.

Question 20: Which of the following does not belong to the group?

  1. Fibonacci
  2. Pascal
  3. Newton
  4. Pythagoras
Answer: (3) Newton

Explanation:

Fibonacci, Pascal, and Pythagoras are associated with mathematical theories or concepts, while Newton is primarily known for physics.

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