ALLOYS

·   Bronze is the mixture of Copper and tin.

·   Brass is an alloy of Copper and Zinc

·   Bronze is an alloy of copper and Tin

·   Stainless steel is an alloy of carbon +Iron with Chromium and Nickel

·   German silver is an alloy of copper with nickel and zinc

·   Solder is an alloy of lead and tin

·   Dental amalgam = mercury +silver, Tin, Zinc, Copper

·   Duralumin = aluminium + copper + magnesium

·   Pewter is an ancient alloy made of tin and lead

   ·         Aluminum is used mostly in aircrafts

   ·         Camphor exhibits the property of sublimation.

   ·         The alloy which consists of copper and tin.Bronze

·   Excessive use of fertilizers causes death of pants due to exomosis.

·   Stainless steel => Carbon + Iron + Chromium + Nickel.

·   Bronze does not rust.

·   Dental Amalgem => mercury + Silver, Tin, Zinc, Copper.

·   Duralumin => aluminum+Copper+magnesium.

·   Brass => Copper + Zinc.

·   Pewter => an ancient alloy made up to tin and lead.

·   Aluminum is used mostly in aircrafts.

·   Australia has the largest bauxite deposits.

·   Aluminum metal is obtained from aluminia by electrolysis – passing electricity through it. Charles Hall in the USA and Paul Heroult in France discovered this process independently in 1886.

  ·         Asbestos does not burn and it is a mineral fiber

  ·         Amalgam is a mixture of metal and mercury

·         Nickel is used as a catalyst while manufacturing ghee

·         After persistent decay, radium would be finally changed into Lead.

·         Mercury is a liquid with greatest density

·         Noble metal are non-reactive metals example Gold, Silver and Platinum

·         Mica is an excellent insulator

·         Purest form of iron is wrought iron

·         Cast iron has highest carbon content

·         Sodium, potassium and magnesium are reactive metals

·         Sodium burns in water not in kerosene

·         Conductivity level: 1) silver, 2) copper, 3) aluminum, 4) iron

·         PVC = Ployvenyl Chloride

·         First synthetic materials was Celluloid in 1868

·         Second synthetic material by Bakelite invented by Leo Hendricks Backland

·         Largely limestone is used in the production of cement

·         Granite can be found in igneous rocks.

·         Coal and petroleum are found in Sedimentary rocks

·         Gold and copper are mostly found in old Igneous rocks

·         Magnesium is abundant in sea

·         Sources of uranium in Pakistan is Dera Ghazi Khan

·         What type of acid is used in car batteries Sulphuric

·         Copper can be converted into gold by: Artificial radioactivity

·         Tungsten has the highest melting point = 3410 deg: C

·         The coil used in a heater is made of Nichron.