Objects in the fountain appear to be somewhere but isnt
False. At equilibrium, the rate of forward reaction is equal to the rate of backward reaction. The net concentration of both products and reactants won't change, but the reactions still take place.
The answer to the question is letter b
In descriptive investigations, we still haven't formed any hypothesis yet so we seek information by asking question.
It's not repeatable because repeating the questions over and over again without any clue about what we want to seek is completely waste of time.
Hope this helps xox :)
I don't know anything sorry for inconvenience but I will be used to make a system running with artificial intelligence