/7 Science Quiz (for 12 to 16 years old): Quiz 2 1 / 7The gas usually filled in the electric bulb is carbon dioxide Nitrogen oxygen hydrogen 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 / 7Bromine is a highly inflammable gas red liquid colourless gas black solid 4 / 7Washing soda is the common name for Sodium bicarbonate Calcium bicarbonate Sodium carbonate Calcium carbonate 5 / 7The hardest substance available on earth is Gold Iron Diamond Platinum 6 / 7Which of the gas is not known as green house gas? Nitrous oxide Carbon dioxide Methane Hydrogen 7 / 7Quartz crystals normally used in quartz clocks etc. is chemically silicon dioxide germanium oxide sodium silicate a mixture of germanium oxide and silicon dioxide Your score is 0% Restart quiz Next quiz Please rate the quiz Send feedback
