how can u surely know that the chef does not make the food half cook?

which basically not all the alcohol are evaporated...

and if possible give the chemical equation that prove that alcohol in marinated food are 100% evaporated...

its not the beef im saying... it the spices... or u guys are marinating beef in 100% alcohol????

yes... but the new chemical is derived from alcohol... oh yes, unless it is chemically proven 100% that the new substances will not cause intoxication, then it will create doubt...

when there is a doubt, it is better to avoid it...

Guys, can any muslim pls explain in simple words. Im not islam, and i dont claim to know everything. So, my questions are:

1. Coming in contact with alcohol itself is haram? Or it becomes haram is you use it to intoxicate yourself?
I was under the impression its only haram if it intoxicates a muslim.

2. Perfume containing alcohol is Haram? If so, muslims cannot use them & they have to cleam themself 7 times. Right?

3. Why tapai is not haram? Drinking tapai water is also not haram. I have seen ppl eat tapai and having their face all flushed (muka jadi merah....) and claim feely dizzy. (But I would guess the content is definitely more than 0.01% as the alcohol taste is there. I have tasted both Malt drink which is declared more than 0.05% and tapai). From a layman's view like me who knows very little about Islamic rules, i would say tapai is definitely haram. Please explain.

4. Most medicine (cough mixtures etc) contains certain amount of alcohol. If coming in contact itself is not acceptable, this one also cannot accept right?

Guys, please don ask impossible situation questions like "You are in a desert with festering wound - which one will use to clean your wound - unclean water or alcohol). These questions dont help us to understand anything.
Thanks in advance.