Understand the science behind daily life through questions covering health, energy, environment, inventions and natural phenomena.
Questions are tracked as practiced when you open Show Answer & Explanation. Tracking stays only in this browser tab and no subject-test result is saved.
Which property of a magnet means it will always realign itself to point in a north-south direction if freely suspended?
Which common acid is found in citrus fruits like lemons and oranges giving them a sour taste?
Which common household acid is found in vinegar and gives it its sour taste and smell?
Which process in plants involves losing water vapour through stomata helping in cooling and nutrient transport?
Which part of the plant transports water and minerals from roots to leaves and food from leaves downward?
Which part of the plant conducts photosynthesis and contains stomata for gas exchange?
Which part of the plant is responsible for anchoring it in soil and absorbing water and minerals?
Which everyday principle explains how blood pressure monitors measure pressure in the arteries?
Which everyday item uses a bimetallic strip that bends when heated to control temperature in older thermostats?
Which part of the water cycle involves water falling from clouds back to the Earth's surface as rain snow or hail?
Which part of the water cycle involves water vapour cooling and turning back into liquid water droplets to form clouds?
Which process in the water cycle involves the sun's energy turning liquid water into water vapour?
Which device is used in submarines to see objects above the water surface without surfacing?
Which everyday phenomenon explains why a ship made of steel can float despite steel being denser than water?
Which type of wave requires a material medium to travel and cannot propagate through vacuum?
Which gas is produced during electrolysis of water at the negative electrode called the cathode?
Which gas is produced during the electrolysis of water at the positive electrode called the anode?
Which naturally occurring radioactive element was discovered by Marie Curie and named after her home country?
Which everyday phenomenon demonstrates that objects at higher temperature emit more thermal radiation?
Which type of chemical bond involves the transfer of electrons from one atom to another?