This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

What Time Should the last watch show in the below figure?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

What's the only room from which no one can enter or leave

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?

I am the first thing you need while camping.
I am always with the person named Marcos Valencia and Carrick.
But Pogba Zlatan and Rooney think I am wasteful and do not need me.
I am the second to the last thing to add when you are making a patch.

What am I?

A man dies of old age on his 25 birthday. How is this possible?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??