Poker tells and Poker Etiquette

[Steve Chase]

When I watch WSOP and WTP on TV, I often see some players trying to pick a tell by asking some specific questions.

What I like to know are:

1. What are the best questions to ask so that you can pick up a tell on your opponent's hand?

2. What kind of questions confirm with Poker Etiquette?
Can we ask following questions within Poker Etiquette:

A. How many chips do you have left?
B: Do you have AQ?
C: Can you beat my KJ?

3. If I was asked for some questions, within Poker Etiquette
what questions I have to answer and what questions I don't have to answer.

For example, if I was asked:
A. How many chips do you have left?
B: Do you have AQ?
C: Can you beat my KJ?

Can I just sit like a stature and ingore all these questions?
Particular, do I have to answer question A?
Can dealer counts my chips for me?
Or Villian counts my chips by himself?