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