Home > General ScienceWhat gas is commonly known as laughing gas?A. Oxygen B. Carbon Dioxide C. Nitrogen D. Nitrous OxideAnswer: Nitrous OxideSubjects: General ScienceRelated MCQsWhich part of the cell contains genetic material?Who developed the theory of general relativity?What is the most abundant element in the Earth’s atmosphere?Which vitamin is essential for blood clotting?What is the unit of frequency in physics?What is the unit of electric current?What is the most abundant element in the universe?Which planet is known as Earth’s twin due to its similar size and structure?What is the primary source of energy for Earth’s ecosystem?What part of the brain controls balance and coordination?What is the capital city of Australia?What is the largest mammal in the world?Which of the following is a non-renewable energy source?Which process causes the gradual breakdown of rocks at Earth’s surface?Which gas is the primary contributor to the greenhouse effect?