Can you find out the missing number in the grid?

A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?

What country can make you shiver?

If two's company, and three's a crowd, then whats four and five ?

Why do Chinese men eat more rice than Japanese men do ?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Which alphabet letter is a question?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?