Which halogen gas is widely used for water purification and disinfection of swimming pools?

More Everyday Science MCQs

• The pitch of a musical sound depends primarily on which characteristic of the sound wave?
• Loudness or intensity of sound depends primarily on which wave property?
• Which electromagnetic radiation has the shortest wavelength and highest frequency in the electromagnetic spectrum?
• Which electromagnetic waves have the longest wavelength and lowest frequency in the spectrum?
• Which type of electromagnetic radiation is used in household TV remote controls?