Kerala Public Service Commision examination questions, online psc exam

Chemistry-(Part-XI)

UPSC, PSC, BANK, RAILWAY,etc. Examination Questions

PSC Question and Answer about Chemistry-(Part-XI) including for Kerala Administrative Service (KAS), Secretariat Assistant, Panchayath Secretary, BDO, Auditor, Assistant, LDC and LGS examination level questions. We will update balance portion of the study material.....

Question1:-Which element is used in the Vulcanization of Rubber



Sulphur


Question2:-Its commercial uses are primarily in Fertilizers. Whose?



Sulphur's


Question3:------ is widely used in Gun Powder



Sulphur


Question4:----- is widely used in Matchboxes



Sulpher


Question5:------ is widely used in Insecticides and Fungicides



Sulphur


Question6:---- is used in Ayurvedic Medicines



Sulphur


Question7:------ is used in medicines for Blood purification



Sulpher


Question8:-The Enemy of Copper is -----



Sulpher


Question9:-The King of Metals



Gold


Question10:- The Symbol of Gold



Au


Question11:-Atomic Number of Gold



79


Question12:-The most Ductile Metal



Gold


Question13:- Purity of Gold is expressed in



Carat


Question14:-Purest Gold is ------ Carat



24


Question15:-Gold used for making jewellery is ----- carat



22


Question16:-Gold is soluble in ----- and -----



Aquaregia and Mercury


Question17:-Aquaregia is a mixture of



Hydrochloric Acid and Nitric Acid


Question18:- The ratio of Hcl and Nitric Acid in Aquaregia



3:1


Question19:------ is added to Gold to make it hard



Copper


Question20:-Silver is the best conductor of ------ & --------



Heat and Electricity


Question21:----- is used in polishing mirrors



Silver


Question22:- Silver Salt is used in ------



Photographic Films


Question23:- The most important ore of Zinc is



Zinc Blende


Question24:-Calamine is the ore of -------



Zinc


Question25:-Impure Silver is known as



Spelter


Question26:----- is used in Galvanization



Zinc


Question27:----- is used in Dry Cells



Silver


Question28:------ is used as a reducing agent in the manufacture of perfumes and synthetic drugs



Zinc


Question29:-The metal present in Insulin



Zinc


Question30:- Zinc Flower is the cloudy smoke of -----



Zinc Oxide


Question31:-What are Noble Gases



Helium, Neon, Argon, Krypton Xenon and Radon


Question32:-Noble Gases are also known as



Inert Gases


Question33:-The Inert Gas which is not present in Air



Radon


Question34:-Radon is obtained by the radio active disintegration of --------



Radium


Question35:-Atomic Number of Helium is



Two


Question36:- Liquid Helium is used as ----



Cryogenic


Question37:-The Inert Gases used for Welding



Helium and Argon


Question38:-To prevent the oxidisation of Metals like Maganesium and Steel , ------- is used



Helium


Question39:-Which gas is mixed with Oxygen to use for respiration by deep sea divers



Haelium


Question40:- Helium is first discovered in ----'s atmosphere



Sun's


Question41:- ----- is used in making advertising Signs



Neon


Question42:-The Inert Gas which produces crimson glow when an electric discharge passes through it is -----



Argon


Question43:------ gas is used to create an Inert atmosphere in chemical reactions and in Electronic Bulbs



Argon


Question44:- The Inert Gases used in Electrical Valves and TV tubes and also in Light Houses and Miner's Lamp



Krypton and Xenon


Question45:-Krypton is discovered by ----- in air



W. Ramsay


Question46:-Krypton is also known as .



Hidden Gas


Question47:-Xenon is was discovered by ------ in air



W. Ramsay


Question48:-Xenon is also known as



Stranger Gas


Question49:---- is used to inflat air craft tyres



Helium


Question50:-The elements which lose electrons in chemical reactions are called



Metals


Question51:----- form basic or amphoteric oxides



Metals


Question52:-The property of Metals to be hammered into very thin sheets is called



Malleability


Question53:- The best malleable metals are



Gold and Silver


Question54:-The property of metals capable of being drawn into wires is known as



Ductility


Question55:-The most ductile metal is



Gold


Question56:-Pitch Blende is the Ore of



Uranium


Question57:-Monozite is the Ore of



Thorium


Question58:-Illmanite is the Ore of



Titanium


Question59:-Rutile is the Ore of



Titanium


Question60:-Rock Salt is the ore of



Sodium


Question61:-Horn Silver is the Ore of



Silver


Question62:-Cinnabar is the Ore of



Mercury


Question63:-Cryolite is the Ore of



Aluminium


Question64:-Stibenite is the Ore of



Antimony


Question65:-Cobalite is the Ore of



Arsenic


Question66:- Chromite is the Ore of



Chromium


Question67:-Galena is the Ore of



Lead


Question68:-Litharge is the Ore of



Lead


Question69:-Azurite is the Ore of



Copper


Question70:-Chalcolite is the Ore of



Copper


Question71:-Dolomite is the Ore of



Calcium


Question72:-The process of extracting Metals in a pure state on a large scale from its Ore by physical and Chemical means



Metallurgy


Question73:-The Mineral from which the metal is conveniently and economically extracted is



Ore


Question74:-The Impurities present in Ore



Gangue


Question75:-A substance added to the Ore to remove the impurities is called



Flux


Question76:----- flux is added to remove basis impurities



Acidic Flux


Question77:--------- flux is used to remove the acidic impurities



Basic Flux


Question78:-Silica is an example of ------ Flux



Acidic


Question79:- Quick Lime is an example of ------ Flux



Basis


Question80:-On the extraction of Iron , ------ acts as a flux



Calcium Carbonate


Question81:-Combination of guangue with flux in ores forms a fusible material called -------



Slag


Question82:-Sulphide ores are purified by ------- process



Froth Floatation Process


Question83:------ is the prosess of heating the ore below its melting point in absence of air to remove volatile impurities like Arsenic



Calcination


Question84:----- is the process in which the ore is heated below its melting point in presence of air to oxidise the impurities



Roasting


Question85:-Hardest Metal



Chromium


Question86:- ----- & ----- occur exclusively in free state



Gold and Platinum


Question87:-Metals extracted from sea water are



Magnesium and Sodium


Question88:-Metals generally accumulated in living organisms



Vanedium and Pottassium


Question89:-Most abundant Metal present in developed animals



Calcium


Question90:-Major metals present in Chloroplast are



Magnesium, Manganese, Copper and Iron


Question91:-When Lithium is heated they give off ------ coloured light



Red


Question92:- When sodium is heated they give off ------ coloured light



Bright Yellow/ Orange


Question93:-When Pottassium is heated they give off ------ coloured light



Lilac


Question94:-When Calcium is heated they give off ------ coloured light



Brick Red


Question95:-When Strontium is heated they give off ------ coloured light



Crimson Red


Question96:-When Barium is heated they give off ------ coloured light



Pale Green


Question97:-When Copper is heated they give off ------ coloured light



Bluish Green


Question98:-The second most abundant metal in earth crust is



Iron


Question99:- The metal related to Arthritis



Pottassium


Question100:-The metal present in Insulin



Zinc