What does below chemistry rebus means?

I have no life, but I can die. What am I?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

Can you Find and name the hidden bird in the picture below ?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

Find the next number in the series below

21 32 54 87 131 ?

How many times in a given day, minutes and hour clock comes in a straight line ?