What does below chemistry rebus means?

In the given picture, in how many ways can you read the word "Tiger"?

What can go up a chimney down, but can’t go down a chimney up?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

What begins with T, ends with T, and has T in it?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

Spot what is wrong here in below Picture?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?