Question 1

Which one of the following is the odd one out?
Sparrow, Eagle, Penguin, Parrot

Accepted Answer

Sparrow, Eagle, and Parrot are all birds that can fly. Penguin is a bird that cannot fly—it is flightless and adapted for swimming instead.

Question 2

Which one of the following is the odd one out?
Rose, Lotus, Sunflower, Cactus

Accepted Answer

Rose, Lotus, and Sunflower all have colorful, prominent flowers used for decoration or aesthetic purposes. Cactus is primarily a succulent plant adapted to dry climates; while it may flower, its primary characteristic is water storage, not ornamental flowers.

Question 3

Which one of the following does NOT belong to the group?
A) Cricket
B) Tennis
C) Badminton
D) Chess

Accepted Answer

Chess is a board game played indoors on a stationary board, while cricket, tennis, and badminton are all outdoor/court sports involving physical movement and a ball or shuttlecock.

Question 4

Which one of the following does NOT belong to the group?
A) Carrot
B) Potato
C) Tomato
D) Onion

Accepted Answer

Tomato is a fruit botanically, while carrot, potato, and onion are all root vegetables or underground plant parts used as vegetables in cooking.

Question 5

Which one of the following is the odd one out?
Dolphin, Whale, Shark, Seal

Accepted Answer

Dolphin, Whale, and Seal are all mammals that live in water. Shark is a fish—it has gills, not lungs, and reproduces by laying eggs, not by giving birth to live young.

Question 6

Which one of the following does NOT belong to the group?
A) Rose
B) Lotus
C) Sunflower
D) Cactus

Accepted Answer

Cactus is a succulent plant adapted to arid/desert environments, while rose, lotus, and sunflower are flowering plants that require regular water and grow in normal soil conditions.

Question 7

Which one of the following does NOT belong to the group?
A) Gold
B) Silver
C) Copper
D) Carbon

Accepted Answer

Carbon is a non-metal element, while gold, silver, and copper are all precious or valuable metals.

Question 8

Four words are given below. Three of them share a common characteristic. Find the ODD ONE OUT.

Accepted Answer

Rose, Lotus, and Jasmine are all flowering plants (flowers). Fern is a non-flowering plant — it reproduces through spores and does not produce flowers. Hence, Fern is the odd one out.

Question 9

Which one of the following is the odd one out?
Apple, Carrot, Potato, Spinach

Accepted Answer

Apple is a fruit that grows on trees. Carrot, Potato, and Spinach are all vegetables that grow underground or at ground level. Apple is the only fruit in the group.

Question 10

Which one of the following does NOT belong to the group?
A) Sparrow
B) Penguin
C) Parrot
D) Peacock

Accepted Answer

Penguin is a flightless bird, while sparrow, parrot, and peacock are all birds capable of flight.

Question 11

Which item does NOT fit the pattern?
Diamond, Ruby, Emerald, Coal

Accepted Answer

Diamond, Ruby, and Emerald are precious gemstones valued for jewelry and aesthetics. Coal is a non-precious mineral used primarily as fuel and industrial material, not for ornamental purposes.

Question 12

In a group of items, identify the odd one out:
Pencil, Eraser, Sharpener, Notebook

Accepted Answer

Pencil, Eraser, and Sharpener are all tools used to modify or maintain writing instruments. Notebook is a medium/surface for writing, not a tool for maintaining writing instruments.

Question 13

Find the odd one out:
Spoon, Fork, Knife, Plate

Accepted Answer

Spoon, Fork, and Knife are all utensils used to pick up, cut, or scoop food and bring it to the mouth. Plate is a dish/container used to hold or serve food, not a utensil for eating.

Question 14

Find the odd one out:
Rose, Lotus, Sunflower, Carrot

Accepted Answer

Rose, Lotus, and Sunflower are flowering plants that bloom and are valued for their flowers. Carrot is a root vegetable; while it may have flowers, it is cultivated and consumed for its underground root, not its flower.

Question 15

Find the odd one out:
Lion, Tiger, Leopard, Deer

Accepted Answer

Lion, Tiger, and Leopard are all large carnivorous felines (wild cats). Deer is a herbivorous ungulate (hoofed animal) that is prey for carnivores, not a predator.

Question 16

Find the odd one out:
Pencil, Eraser, Sharpener, Notebook

Accepted Answer

Pencil, Eraser, and Sharpener are all tools/accessories used to maintain or modify writing instruments. Notebook is a medium/surface for writing, not a tool for maintaining writing instruments.

Question 17

Identify the odd one out:
Rose, Lotus, Cactus, Sunflower

Accepted Answer

Rose, Lotus, and Sunflower are flowering plants that require regular water and grow in moist/wet environments. Cactus is a succulent plant adapted to arid environments and requires minimal water.

Question 18

Find the odd one out:
Piano, Guitar, Violin, Microphone

Accepted Answer

Piano, Guitar, and Violin are all musical instruments that produce sound through vibration of strings or keys. Microphone is an electronic device that captures and amplifies sound but does not produce sound on its own.

Question 19

In the following group of words, which one does NOT belong to the same classification as the others?

Pencil, Eraser, Sharpener, Notebook

Accepted Answer

Step-by-step reasoning:

1. Analyze each option by identifying their primary function and category:
   - Pencil: A writing instrument used to make marks on paper
   - Eraser: A tool used to remove marks made by pencil
   - Sharpener: A tool used to sharpen the tip of a pencil
   - Notebook: A collection of blank pages bound together, used as a surface to write on

2. Classify the items:
   - Pencil, Eraser, and Sharpener are all TOOLS/ACCESSORIES used in the writing process
   - Notebook is a SURFACE/MEDIUM on which writing is done

3. Determine the odd one out:
   - Pencil maintains, sharpens, or removes from a writing surface
   - Eraser and Sharpener are both accessories that support or enhance the pencil's functionality
   - Notebook is fundamentally different—it is the base/surface material needed for writing, not a tool or accessory

4. Conclusion:
   Notebook is the odd one out because it is the medium/base for writing, whereas the other three items are tools or accessories related to pencil use. The other three items are all objects that act upon or support the writing instrument itself.

Question 20

In a classification system, which one of the following does NOT belong to the same category as the others?

A) Emerald
B) Sapphire
C) Diamond
D) Graphite

Accepted Answer

The correct answer is D) Graphite. Emerald, Sapphire, and Diamond are all precious gemstones that are crystalline minerals valued for jewelry and ornamental purposes. Graphite, while also a form of carbon and crystalline, is NOT a precious gemstone—it is an industrial mineral used for pencils, lubricants, and electrodes. The trap lies in focusing only on the 'crystalline' property rather than the 'precious gemstone' classification.

SSC CHSL Classification / Odd One Out

Classification / Odd One Out— Rules & Concept

Key Points to Remember

Exam-Specific Tips

Classification / Odd One Out — Practice Questions

60-Second Revision — Classification / Odd One Out