Important Facts About Some Metals
Important Facts About Some Metals
⇒ Zinc phosphide is used for killing rats.
⇒ Wood furnitures are coated with zinc chloride to prevent termites.
⇒ Excess of copper in human beings causes disease called Wilson.
⇒ Galvanised iron is coated with zinc.
⇒ Rusting of iron is a chemical change which increases the weight of iron.
⇒ Calcium hydride is called hydrolith.
⇒ Calcium hydride is used to prepare fire proof and waterproof clothes.
⇒ In flash-bulb, magnesium wire is kept in atmosphere of nitrogen gas.
⇒ Titanium is called strategic metal because it is lighter than iron.
⇒ Group 1st element are called alkali metals because its hydroxides are alkaline whereas group 2nd elements are called alkaline earth metals.
⇒ Babbitt metal contains 89% Sn (Tin), 9% Sb (Antimony) and 2% Cu (Copper).
⇒ Gun powder contains 75% Potassium nitrate, 10% sulphur and 15% charcoal.
⇒ Chromium trioxide is known as chromic acid.
⇒ Nichrome wire is used in electrical heater [(Ni, Cr, Fe)]
⇒ Potassium carbonate (K2CO3) is known as pearl ash.
⇒ Generally transition metals and their compounds are coloured.
⇒ Zeolite is used to remove hardness of water.
⇒ In cytochrome iron (Fe) is present.
⇒ Selenium metal is used in photo electric cell.
⇒ Galium metal is liquid at room temperature.
⇒ Palladium metal is used in aeroplane.
⇒ Radium is extracted from pitchblende.
⇒ World famous Eiffel Tower has steel and cement base.
⇒ Actinides are radio-active elements.
⇒ Cadmium rod is used in nuclear reactor to slow down the speed of neutron.
⇒ Sodium peroxide is used in submarine and also to purify closed air in hospital.
⇒ Co (60) is used in cancer treatment.
⇒ Onion and garlic have odour due to potassium.
⇒ Oxides of metals are alkaline.
⇒ Silver and copper are the best conductor of electricity.
⇒ Gold and Silver are the most malleable metal.
⇒ Mercury and iron produces more resistance in comparison to the other during the flow of electricity.
⇒ Lithium is the lightest and the most reductant element.
⇒ In fireworks, crimson red colour is due to presence of strontium (Sr).
⇒ Green colour is due to the presence of Barium in fireworks.
⇒ Barium sulphate is used in X-ray of abdomen as barium meal.
⇒ Barium hydroxide is known as Baryta water.
⇒ Osmium is the heaviest metal and the Platinum is the hardest.
⇒ Zinc oxide is known as flower of zinc. It is also known as chinese white and used as white paint.
⇒ Silver chloride is used in photochromatic glass.
⇒ Silver iodide is used in artificial rain.
⇒ Silver nitrate is used as marker during election. It is kept in coloured bottle to avoid decomposition.
⇒ Silver spoon is not used in egg food because it forms black silver sulphide.
⇒ To harden the gold, copper is mixed. Pure gold is 24 carrat.
⇒ Iron Pyrites (FeS2) is known as fool’s gold.
⇒ Mercury is kept in iron pot because it doesn’t form amalgam with iron.
⇒ In tubelight there is the vapour of mercury and argon.
⇒ Tetra-Ethyl lead is used as anti knocking compound.
⇒ Lead-pipe is not used for drinking water because it forms poisonous lead hydroxide.
⇒ Fuse wire is made up of lead and tin
⇒ Wrought iron is the purest from of Iron.
⇒ Percentage of carbon in cast iron = 2.5-5%, In wrought iron 0.1 0.2%
⇒ The melting point of Tungsten (W) is 3500°C. In India, Tungsten is produced in Degana mine situated in Rajasthan.
⇒ To prevent oxidation of tungsten, air is removed from the electric bulb.
⇒ Zirconium (Zr) metal burns in oxygen as wall as in nitrogen.
⇒ Baddeleyite or Zircona (ZrO2) is an ore of Zirconium. have
⇒ Zirconium (Zr), Cadmium (Cd) and Boron (B) the capability to absorb neutrons. So, they are used in nuclear reactor.
⇒ Beryl (3BeO·Al2O3·6SiO2) is an ore of Beryllium.
⇒ Stannous Sulphide (SnS2) is also called Mosaic gold. It is used as paint. Tin shows the allotropy.
⇒ Barium Sulphate (BaSO4) is used as barium meal in X-ray of Stomach.
⇒ The green light produced while burning crackers is due to presence of Barium.
⇒ The Crimson red light produced while burning crackers is due to Strontium (Sr).
⇒ Silver (Ag), Gold (Au), Copper (Cu), Platinum (Pt) and Bismuth (Bi) are found in independent state because they are very less reactive.
⇒ Gold, platinum, silver and mercury are noble metals.
⇒ Gold and silver are the most malleable among metals.
⇒ Mercury and Iron provide much resistance in the flow of electric current.
⇒ Aluminium was first extracted in 1827 AD is potassium urangly ortho vanedate.
⇒ Greenocite (CdS) is the ore of Cadmium.
⇒ Britannia metal is an alloy of Antimony (Sb), Copper (Cu) and Tin (Sn).
⇒ Thulium has symbol Tm.
⇒ Group I elements are called alkali metals and its hydroxides are alkaline while group II elements are called Alkaline earth metal.
⇒ Flash bulb contain magnesium wire in medium of nitrogen.
⇒ Aluminium hydroxide is used to make water proof and Stainless Clothes.
⇒ Calcium Carbide (CaC2) reacts with water to produce acetylene gas.
⇒ The reaction of Ferric Oxide (Fe2O3) with aluminium is used to fill up the cracks of railway tracks and machine parts. This reaction is called Thermite reaction.
⇒ Anaemia is caused due to deficiency of Iron in the body while excess of Iron in the body may cause siderosis. Bantu tribes of Africa suffer from siderosis because they drink beer in iron utensils.
⇒ Auric Chloride (AuCl3) is used to make antivenom needles.
⇒ Mercury is also known as quick silver. Mercury is kept in iron vessels because it does not make amalgams with Iron.
⇒ Lead is a stable element. So, it is used to write on paper.
⇒ Combustion of petrol in automobiles pollute air by producing lead.
⇒ Lead arsenic is an alloy used to make bullets. Carbon lead is used to make artificial parts of body.
⇒ Lead Oxide is also called Litharge. It is an amphoteric oxide. It is used in rubber industries in manufacturing of storage batteries and flint glass.
⇒ Uranium is a heavy radioactive metal. It belongs to actinide group. It is used in manufacture atom bomb. The bombs dropped on Hiroshima and Nagasaki were made of Uranium.
⇒ Ultra purification of a metal is done by zone melting.
⇒ The green colour seen in firework displays is due to the barium chloride salt.
The chemical name of bleaching powder is calcium hypochorite and its molecular formula is Ca(OCl)Cl.
Sodium can be easily cut with in knife.
Silver is not attaced by air or moisture. However air contaminated with hydrogen sulphide (H₂S) cover it with an adherent film of black silver sulphide (Ag2S).
Follow on Facebook page – Click Here
Google News join in – Click Here
Read More Asia News – Click Here
Read More Sports News – Click Here
Read More Crypto News – Click Here