Physics
100: What quantities have only magnitude and no direction?
Scalar
100: What is the 19th element in the periodic table?
Potassium (K)
100: What is the process of removing feces from the body called?
Excretion
100: How many days does it take for the moon to orbit the earth once?
Any answer in the range 27-30
100: What is the name of the memory responsible for storing data temporarily in a computer?
Random Access Memory (RAM)
200: What is the main energy store in a battery?
Chemical (Potential) Energy
200:What harmful gas is released into the atmosphere when fossil fuels are burned?
Carbon Dioxide / Carbon Monoxide / Sulfur Dioxide / Methane / Nitrous Oxides
200: Deficiency of which vitamin or mineral causes rickets in humans?
Vitamin D
200: What is the speed of light in space?
3.0 x 10^8 m/s or approximate equivalent/
(Exact value is 299,792,458 m/s)
200: A type of malware locks a part of users computer unless a sum of money is paid. What is this type of malware called?
Ransomware
300: What is the audible frequency range that humans can hear?
20 Hz-20,000 Hz/20Khz
300: What is the name of the separation technique that separates a soluble solute from a solvent using heat?
(Simple) Distillation
300: What blood group is known as universal blood donor?
300: Which planet of the solar system has the most moons?
Saturn
300: A logic gate, with two inputs and one output, only outputs 0 when the two inputs are the same. What is this logic gate called?
XOR (exclusive OR) gate
400: What is the approximate time taken by light from the Sun to travel to the Earth?
400: What is the colour of aqueous bromine?
Orange
400: Which cell organelle is responsible for production for energy?
Mitochondrion/Mitochondria
400: What observation provides evidence that the universe is expanding?
Redshift / Doppler's Effect
400: A type of check, used in telecommunications, includes sending a copy of the data back to the sender from destination, in order to check if data has been changed or not. What is this check called?
Echo Check
500: What is the main energy changes that take place in a coal-fired power station? (Hint:There's 3 changes)
Chemical to Heat to Kinetic to Electrical energy, IN THAT ORDER
500: What type of alkane can have the same molecular formula as an alkene?
Cycloalkane
500: What compund is formed as oxygen binds with haemoglobin in Red Blood Cell?
500: Where in the Solar System is the Kuiper belt?
Beyond Neptune
500: What form of Artificial Intelligence allows a system to learn from data by itself?
Machine Learning