Several blocks of magnesium are fixed to the bottom of a ship to (a) keep away the sharks (b) make the ship lighter (c) prevent action of water annd salt (d) prevent puncturing by under- sea rocks Several blocks of magnesium are fixed to the bottom of a ship to (a) keep away the sharks (b) make the ship lighter (c) prevent action of water annd salt (d) prevent puncturing by under- sea rocks November 23, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related