Can you find the key in the picture below?

Which is heavier: a ton of bricks or a ton of feathers?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What is so fragile that saying its name breaks it?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

When it is alive we sing, when it is dead we clap our hands. What is it?

Spot the cat in the picture below

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?