Which of the following is a characteristic of a strong base? So here, when we look at these options, it doesn't matter if it's a strong base or a weak base. These are characteristics that are addictive of all bases. All right, so here it turns blue. Litmus paper red. Well, remember that happens not with bases, but with acids.
It releases H ions in a solution. No. When we talk about a base, it ionizes into a basic anion, which H+ is not. It removes OH- ions in a solution. So here, if we had for example, lithium hydroxide, that would produce OH-, it wouldn't remove OH-. So this can't be true.
It can be used in production of cleaning supplies. Remember taste and feel. We said that basis taste bitter, but more importantly they feel slippery and we use an example of a bar of soap. That's because bases can be used within cleaning supplies. So here option D is the correct answer.