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Assistant General Science

Chemistry – 06

ലോഹങ്ങളിൽ മഗ്നീഷ്യം, മെർക്കുറി, സ്വർണ്ണം, വെള്ളി, ചെമ്പ്, അലൂമിനിയം എന്നിവയുമായി ബന്ധപ്പെട്ട ചോദ്യങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ.

  • The metal present in Chloroplast

Magnesium

 

  • The element which is known as Chemical sun

Magnesium

 

  • Elements extracted from sea water

Magnesium, Sodium, Chlorine, Bromine

 

  • Magnesium compound using for dental filling

Magnesia cement (Soral cement)

 

  • First known super conductor

Mercury

 

  • Metal with lowest melting point

Mercury

 

  • Metal known as quick silver

Mercury

 

  • Which is known as anomalous metal

Mercury

 

  • Compounds of Mercury is known as (An alloy with one element as mercury

Amalgum

 

  • Amalgum using for dental filling

Silver Amalgum

 

  • Ore of Mercury

Cinnabar

 

  • Unit for measuring quantity of Mercury

Flask (1 Flask=34.5 Kg)

 

  • The tailing of Mercury occurs in reaction with

Ozone

 

  • Noble metals are

Platinum, Gold and Silver

 

  • Elements which exists in free states in nature

Platinum, Gold and Silver

 

  • King of metals

Gold

 

  • White Gold

Platinum

 

  • Little silver

Platinum

 

  • Melting point of Gold

1064°C

 

  • Metal which has very high malleability and ductility

Gold

 

  • Gold used to make ornaments

22 Carat (916 gold)

 

  • Pure Gold

24 Carat

 

  • Gold present in 22 carat gold

91.6%

 

  • Best conductor of electricity

Silver

 

  • Metals which can be separated by Cyanide process

Gold and Silver

 

  • Metals present in Panchaloha

Gold, Silver, Copper, Iron and Lead

 

  • Metals present large quantity in Panchaloha

Copper

 

  • Metal used to make the tip of fountain pen

Osmium

 

  • First metal used by man

Copper

 

  • Malachite is the mineal of

Copper

 

  • First alloy used by man

Bronze

 

  • Metal which is used in gold ornaments

Copper

 

  • Liquid in which noble metals are soluble

Aqua regia

 

  • Liquid known as Royal water

Aqua regia

 

  • Ratio of Hydrochloric acis and Nitric acid in aqua regia

3:1

 

  • The scientist who first isolated Aluminium

Hans Oersted

 

  • Manufacturing process of Aluminium

Hall Heroult process

 

  • Process of Aluminium purification

Hoopes Process

 

  • The scientist who first isolated Aluminium from Bauxite

Charles Martin Hall

 

  • Commercially Aluminium is isolated from

Bauxite

 

  • Aluminum compound which is used for making precious stones artificially

Aluminium Oxide

 

  • Aluminium compound which is used as a foaming agent in fire extinguishers

Aluminium hydroxide

 

  • Component metals in Bronze

Copper and Tin

 

  • Component metals in Brass

Copper and Zinc

 

  • Blue colored mineral in Aluminium is

Lapis Lazuli

 

  • Double sulphate of Aluminium is known as

Alum

 

  • Aluminium compound which is used as mordant (used in dyes of fabrics)

Alum

 

  • Aluminium compound which is used for purifying water

Alum

 

  • Aluminium compound which is used for manufacturing powerful magnets

Alnico

 

  • Alloy of Aluminium which is used for aircraft manufacturing

Duralumin

 

  • Naturally occuring Alumino silicate is

Mica

 

  • Aluminium compound which is known as Emerald

Beryllium Aluminium Silicate

 

  • Aluminium compound which is known as Saphire and Ruby

Aluminium Oxide

 

  • Aluminium compound which is known as Topaz

Aluminium Fluorine Silicate

 

  • Asbestos is also known as

Rock Cotton

 

  • Metal which is used to make CD

Aluminium

 

  • Metal which is showing the properties of both acid and base (Amphoteric)

Aluminium

 

  • Clay is a mineral of

Aluminium

 

  • Metal which is used in reflecting telescope

Aluminium


(To be Continued…)