During which month do people sleep the least?

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

Buy me, smell me or deliver me, I do not change.

Who am I?

Chhote se Chintu Miyan,
Lambi si Pooch.
Jahan Jaye Chintu Miyan,
Wahan Jaye Pooch.

छोटे से चींटू मियाँ,
लंबी सी पूंछ।
जहाँ जाये चींटू मियाँ,
वहाँ जाये पूंछ।

Bolo kya?

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Make a sentence consisting of three words that have the whole alphabet.

I am lying and I always lie. Tell me whether I am lying or telling the truth.

You can hear me, but you can't touch or see me.

What am I?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?