A neodymium magnet (neo-magnet) contains neodymium, iron and boron amongst a few other elements. It is the strongest type of magnet commercially available. Even small neodymium magnets have a large amount of magnetic force and are capable of lifting more than 1000 times their own weight.
Which of these is not a solid at normal room temperature? A. Lunar caustic B. Silver sulphide C. Quicksilver D. Horn silver
Which unstable, combustible material is used in the production of explosives, matches and electric batteries, as well as in etching copper, in manufacturing coloured glass, in the leather industry, in dyeing, and as an antiseptic?
