14.5.5 exercise 5: Che and quale used as interrogative adjectives
Used as interrogative adjectives the situation becomes more complicated. In this case only at the extremes the situation is clear. If for instance a group of reference is mentioned one must use which (Which of these flowers you like best?). If it is clear from the context that the question is about characteristics, what is to be used (What type of food do you like?). The sentence below are clear in that sense. For all other cases you can stick to the rule of thumb. If you can use which as well as what you can use in Italian quale or che as well.
