What does below chemistry rebus means?

What does an Island and the letter T have in common?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

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?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?