A lot of your questions depend hugely on what service you're planning on using to actually buy/sell the bitcoin. Can you give us more information on what you're trying to do here?
I want to buy a property in Turkey and I need to move money to an account in Turkey
Can I buy bitcoins and load them into an account in Turkey ?
Please explain "load them into an account in Turkey"
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like do a transfer, deposit the money in the account
Do banks ask questions if I convert bitcoins to cash ?
Based on my experience, this depends on what service I used to transfer the funds to my bank account. If I used a more well known service, no questions asked. If I used a lesser known service that's unknown to the bank, then chances are they're going to ask some questions.
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who are these well known services