Classification Groups

Classification groups questions present several items and ask you to divide them into two or more meaningful groups based on a shared property. The skill tested is identifying which property correctly separates the items — and naming or applying that grouping rule. Unlike odd-one-out questions (which only find one non-member), grouping questions require you to assign every item to a correct group.

1. Write down all items.
2. Brainstorm possible grouping properties: material, size, living/non-living, category, function.
3. Test each property: does it cleanly separate the items into groups with no item left over in the wrong group?
4. Choose the property that gives the cleanest separation.
5. Name each group clearly and list its members.

Example 1: Cow, Eagle, Shark, Sparrow, Whale, Parrot — group them.

• Property: habitat/type.
• Birds (have feathers, fly): Eagle, Sparrow, Parrot.
• Mammals (warm-blooded, nurse young): Cow, Whale.
• Fish (cold-blooded, gills): Shark.
• Three groups: Birds | Mammals | Fish.

Example 2: Iron, Wood, Copper, Plastic, Gold, Glass — group by conductor/insulator.

• Conductors (allow electricity): Iron, Copper, Gold.
• Insulators (block electricity): Wood, Plastic, Glass.
• Two clean groups.

• A single item may seem to fit two groups; look at which group is stronger given the context.
• Do not group by appearance alone (all round things) if a functional or scientific grouping fits better.
• Check every item — missing one item or placing it in the wrong group loses the mark.

1. Orange, Mango, Neem, Coconut, Tulsi — group these into trees that give fruit vs. trees/plants used for medicine or other purposes.
2. Tabla, Flute, Sitar, Drum, Violin — group by how sound is produced (string instruments vs. wind instruments vs. percussion).