Chemistry- Questions and Answers 20
611. Element stored in wax:Lithium
612. Sodium and potassium are kept in:
Kerosene
613. Rubber is soluble in:
Benzene (C6H6)
614. The only acid shows the characteristics of alkali is:
Boric acid
615. The catalyst used for the production of sulphuric acid is:
Vanadium pentoxide
616. Diamond is Chemical:
Pure carbon
617. The main chemical substance present in the bones and teeth of animal is:
Calcium phosphate
618. Father of the Indian Chemical Industry:
Acharya Prafulla Chandra Ray
619. Bosch process is used in the industrial preparation of:
Hydrogen
620. The alloy used for making the Oscar statue:
Britanium
621. The metal is known as 'Rainbow metal':
Iridium
622. The scientific name of Vitamin B 9 is:
Folic acid
623. The alkali most commonly used to make bathing soap:
Potassium hydroxide
624. Elements showing properties of both metals and non-metals:
Metalloids
625. Metals & Ores
Metals & Ores
| |
Metals
|
Ores
|
Aluminium (Al)
|
Bauxite, Corundum, felspar, Cryolite, Kaolin
|
Antimony (Sb)
|
Stibnite
|
Barium(Ba)
|
Barite, Witherite
|
Cadmium (Cd)
|
Greenockite
|
Calcium (Ca)
|
Chalk, Quicklime, Calcite, Dolomite, Gypsum, Asbestos
|
Chromium (Cr)
|
Chromite
|
Copper (Cu)
|
Malachite, Chalcocite, Chalcopyrite, Cuprite
|
Gold (Au)
|
Quartz, Calaverite, Solvents
|
Iron (Fe)
|
Hematite, Magnetite, Limonite, Copper pyrites
|
Lead (Pb)
|
Galena
|
Magnesium(Mg)
|
Magnesite, Dolomite, Epsom salt, Carnalite
|
Manganese(Mn)
|
Pyrolusite
|
Mercury (Hg)
|
Cinnabar
|
Potassium (K)
|
Carmelite, Sylvite, Potash
|
Silver (Ag)
|
Argentite
|
Sodium (Na)
|
Rock Salt, Trona, Borax
|
Strontium (Sr)
|
Strontianite, Celestine
|
Tin(Sn)
|
Cassiterite
|
Zinc (Zn)
|
Zincite, Eerulinite, Calamine
|
Uranium (U)
|
Uraninite
|
Tungsten (W)
|
Wolframite, Scheelite
|
Nickel (Ni)
|
Pentlandite, Milarite
|
Beryllium (Be)
|
Beryl
|
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