Which gas is responsible for the characteristic smell often associated with rain after a dry spell?

Which everyday chemical reaction is responsible for rusting of iron objects?

Which property of water allows insects like water striders to walk on its surface?

Which scale is used to estimate wind speed based on observed sea or land conditions without instruments?

Which everyday phenomenon demonstrates the principle of capillary action in plants?

Which scale is commonly used to measure the intensity of hurricanes and tropical cyclones?

Which gas commonly used in refrigerators and air conditioners was historically linked to ozone layer depletion?

Which natural disaster is measured using the Richter scale?

Which renewable energy source harnesses sunlight directly to generate electricity?

Which water purification process removes dissolved salts and impurities by forcing water through a semi-permeable membrane?

Which renewable energy source uses moving air currents to generate electricity through turbines?