Multiple choice general knowledge Which of the following is a non-metal that remains liquid at room temperature? Bromine Chlorine Helium Phosphorus Reveal answer Fill a bubble to check yourself A Correct answer Explanation Bromine is the only non-metal that exists as a liquid at room temperature (25°C). It has a characteristic reddish-brown color and strong odor, making it easily distinguishable from other halogens which are gases (chlorine) or solids (iodine).