Can I use a 1/4 turn valve in place of multi turn valve for toilet?
Yeah nothing wrong. You could use either or. Only difference between quarter turn and multi turn is the actual turn method. Quarter turns require to go a “quarter of the way of a full turn”. Multi turns requires continuous turns. Depending on what type of pipe you have coming up is the most important. Not all shut off valves will work for each other. And most sizes are 1/2x3/8. But there is also 1/2x1/2