/5 Science Quiz (for 12 to 16 years old): Quiz 20 1 / 5In fireworks, the green flame is produced because of sodium potassium mercury barium 2 / 5Which of the following is the lightest metal? Lead Mercury Lithium Silver 3 / 5Which metal pollute the air of a big city? Copper Cadmium Lead Chromium 4 / 5Which of the following is an element? Ruby Diamond Sapphire Emerald 5 / 5LPG consists of mainly methane, ethane and hexane methane, butane and propane methane, hexane and nonane ethane, hexane and nonane Your score is 0% Restart quiz Next quiz Please rate the quiz Send feedback By WordPress Quiz plugin
