Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Can it be possible to build a house that has all its four walls facing towards the South?

What kind of tree can you carry in your hand?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

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?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

I always drive my customer away.

Who am I?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

You can hear me, but you can't touch or see me.

What am I?