/7 Science Quiz (for 12 to 16 years old): Quiz 2 1 / 7Which of the gas is not known as green house gas? Nitrous oxide Carbon dioxide Methane Hydrogen 2 / 7The gas usually filled in the electric bulb is Nitrogen hydrogen oxygen carbon dioxide 3 / 7The hardest substance available on earth is Diamond Gold Iron Platinum 4 / 7Bromine is a highly inflammable gas red liquid colourless gas black solid 5 / 7Quartz crystals normally used in quartz clocks etc. is chemically silicon dioxide a mixture of germanium oxide and silicon dioxide germanium oxide sodium silicate 6 / 7Washing soda is the common name for Calcium bicarbonate Sodium carbonate Sodium bicarbonate Calcium carbonate 7 / 7What is the primary cause of climate change? Natural factors Human activity Animal activity Climate change is primarily caused by human activity, particularly the burning of fossil fuels and deforestation.Your score is 0% Restart quiz Next quiz Please rate the quiz Send feedback By WordPress Quiz plugin
