Circle the odd one out. Give reasons for your choice.

1.	LEDs	Bulbs	Sun	Candle
2.	Table	Chair	Moon	Stars
3.	Telescopes	Microscopes	Frosted Glass	Glass
4.	Bag	Iron	Water	Bricks
5.	Wax paper	Air	Fog	Tiffin box

The odd one is shown below :

Reason :

1. Sun — It is the only natural source of light whereas LEDs, bulbs, and candles are artificial sources.
2. Stars — Stars are the only luminous object but table, chair, and the moon are non-luminous.
3. Frosted glass — It is translucent and does not let you see clearly while telescopes, microscopes, and clear glass let you see a clear image.
4. Water — It is the only liquid as bag, iron, and bricks are solids.
5. Air — It is the only transparent material as wax paper and fog are translucent, and a tiffin box can be either opaque or translucent depending on the material it is made of.