/6 Science Quiz (for 12 to 16 years old): Quiz 1 1 / 6Brass gets discoloured in air because of the presence of which of the following gases in air? Hydrogen sulphide Nitrogen Oxygen Carbon dioxide 2 / 6Which of the following metals forms an amalgam with other metals? Mercury Lead Zinc Tin 3 / 6Which of the following is a non metal that remains liquid at room temperature? Chlorine Bromine Helium Phosphorous 4 / 6Chemical formula for water is CaSiO3 H2O Al2O3 NaAlO2 5 / 6Chlorophyll is a naturally occurring chelate compound in which central metal is iron calcium magnesium copper 6 / 6Which of the following is used in pencils? Charcoal Phosphorous Silicon Graphite Your score is 0% Restart quiz Next quiz Please rate the quiz Send feedback
