Asingular subject takes a what kind of verb

Baltus van tassel is known to be a miser. true or false

You need to start an experiment and the instructions are to mix 2 g of sodium bicarbonate with 50 ml of distilled water and then mix the solution. describe what lab apparatus you would use and what safety precautions you must observe when completing this experiment.

If one writes logically, he will prove his point. is this sentence correct or contains an unwarranted shift in person?