Can you replace the question mark with the correct number in the below table sequence?

John: "Hi Teacher, What is your favourite movie ?".
Chemistry Teacher: "Indium Cerium Platinum Iodine Oxygen Nitrogen".
Ten seconds later... John replied I got it.

Do you?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

There are 3 apples in the basket and you take away 2. How many apples do you have now?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

Who are the happiest people in IPL match?

We know that money can be names differently for the purpose it is used for. Some of the examples of money given at following places or for following activities:

In temple = Daan
In school = Fees
During marriage = Dowry
For divorce = Alimony
Paying government = Tax
In court = Fine
Employer to employee = Salary
To kidnappers = Ransom
For illegal reason = Bribe
To civil servant retirees = Pension

Do you know what do we call the money a husband gives to his wife?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.