Can you find out who is the kidnapper in below Picture and why, Explain ?

Akbar called Birbal and asked him to draw a line on the floor. He asked Birbal to make that line smaller without erasing it. Birbal smiled and did it before Akbar could blink his eyes.

How did he managed to do it?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

What is so fragile that saying its name breaks it?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

How many words can a pen with half refill write?

Which city is three-fifths chick two third cat and 50% goat?

What is the next number in this matchsticks series riddle?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS