Can you find out the missing number in the grid?

On 26-01-2022, Juli was murdered at her house in a city in India in the afternoon. There were three suspects in the murder and the following are the statements that were given by them:

John: I visited my village that day.
Jacob: I was out to deposit my house tax in the municipality office at that time.
Jonny: I was at a friend's place having lunch at that time.

Can you find out who is the murderer?

Why do you find that most of the buildings are deprived of the 13th floor?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Find the missing number in the sequence.

3 5/3 7/5 11/7 ? 17/11

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

The owner of a popular clothing store comes up with his own method of pricing items. A vest costs $8, socks cost $10, a tie costs $6, and a blouse costs $12. Using the owner’s method, how much would a pair of underwear cost?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

Forwards I am heavy, backward I am not. What am I?