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