What does below chemistry rebus means?

Where do you go to learn how to make ice cream?

I always drive my customer away.

Who am I?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

A man escapes from jail using help from his girlfriend. The investigators suspect four girls of being the man's girlfriend.

Out of those four girls, one is his girlfriend who is lying. Two of the girls are completely innocent and are speaking the truth. One of the girls is the man's sister who is helping the girlfriend lie. Following are the statements from all four of them:

Ariana: "Myrna is his girlfriend."
Jane: "Angelina is lying."
Angelina: "Ariana is lying."
Myrna: "Jane is not his sister."

Can you find out who is the man's sister among them?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

What word does this rebus represent?

meta meta
meta meta

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?