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Chemistry-(Part-VIII)

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

PSC Question and Answer about Chemistry-(Part-VIII) 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:- Noble Gases belong to --- group



18


Question2:- The Elements which show little reactivity is termed as ------



Noble Gases


Question3:-Elements from Atomic Number 58 to 71 are known as



Lanthanides


Question4:-Lathanides are also called



Rare Earths


Question5:-Elements from Atomic Number 90 to 103 are termed as



Actinides


Question6:Man made Elements are called



Transuranis


Question7:-Another name of Transuranic Elements



Synthetic Elements


Question8:-The Periodic Table is divided into ----- Main Blocks



Four


Question9:The Four Blocks of Periodic Table are



s block, p block, d block & f block


Question10:-s block includes Elements of -----



Group 1 and 2


Question11:-p block includes Elements of -----



Group 13 to 18


Question12:-d block includes Elements of -----



Group 3 to 12


Question13:-f block includes Elements of -----



Lanthanides and Actinides


Question14:-s and p block Elements are called



Representative Elements


Question15:-Lithium , Sodium and Pottassium are included in the ------ group



First group


Question16:-Magnesium, Radium and Calcium are included in ------group



Second group


Question17:- Boron , Aluminium and Gallium are included in ---- group



13 th group


Question18:-13th group of Elements are also known as



Boron Family


Question19:-Carbon, Silicon and Germanium are included in the -------group



14 th group


Question20:-14th group of Elements are also known as



Carbon Family


Question21:-Nitrogen, Phosphorous and Antimony are included in ----- group



15 th group


Question22:-15 th group of Elements are also known as



Nitrogen Family


Question23:-Oxygen, Sulpher and Polonium are included in ----- group of Elements



16 th group


Question24:- 16 th group of Elements are also known as



Oxygen Family


Question25:-Flurine , Chlorine and Iodine are included in the ---- group of Elements



17 th group


Question26:- 17 th group of Elements are also known as



Halogens


Question27:-Helium , Neon and Argon are included in the ----- group of Elements



18 th group


Question28:-i8 th group of Elements are also known as



Inert Gases or Noble Gases


Question29:-d block Elements are called



Trasition Elements


Question30:-f block Elements ara called



Inner Transition Metals


Question31:-In a group, from top to bottom , Atomic Size ----



Increases


Question32:-In a period , Atomic sizes ----- from Left to Right



Decreases


Question33:-The Energy required to remove an Electron completely from an Isolated Gaseous atom or ion of an Element is called



Ionization Energy


Question34:-In a period , Ionization Energy ----- from Left to Right



Insreases


Question35:-In a group, Ionization Energy ----- from Top to Bottom



Decreases


Question36:-The Energy Change when an Electron is gained by a neutral gaseous atom converting it into a negatively charged ion is called



Electron Affinity


Question37:-In a group, Electron Affinity ----- from Top to Bottom



Decreases


Question38:-In a group, Electron Affinity ----- from Left to Right



Increases


Question39:-The power of an Atom to attract Electron Pairs is called



Electro Negativity


Question40:-The Electro Negativity Scale was introduced by



Linus Pauling


Question41:- The attractive force which holds the atoms together in a molecule is called



Chemical Bond


Question42:-The bond formed by the transfer of Electrons from One Element to another is termed as



Ionic Bond


Question43:-Ionic Bond is also known as



Electrovalent Bond


Question44:-Ionic Bond was proposed by



Kossel


Question45:-The bond formed by the mutual sharing of Electrons between the Atoms is known as



Covalent Bond


Question46:-Covalent Bond was proposed by .



Gilbert N Lewis


Question47:- The two types of Covalent Bonds are



Polar and Non Polar Covalent Bonds


Question48:----- bond is made by two Atoms with different Electro Negativity



Polar Covalent Bond


Question49:- The bond made by the two Atoms of same Electro Negativity is known as



Non Polar Covent Bond


Question50:- The number of Electrons contributed by an Atom for sharing is known as



Covalency


Question52:- Co-ordinate Bond is proposed by



Sidgwick


Question53:-The attractive force between Mobile Electrons and the Metallic Kernels are called



Metallic Bonds


Question54:-The bond between molecules which are brought together is called



Van der Waals bonds


Question55:-The weekest bond is



Van der Waals bonds


Question56:-The electrostatic attractive force between covalently bonded Hydrogen Atom of one Molecule and an Electro Negative Atom of the same or neighbouring molecule is called



Hydrogen Bond


Question57:-The two types of Hydrogen Bonding are



Inter Molecular and Intra Molecular H bonding


Question58:------- is a process in which one or more substances are converted into new substances



Chemical Reaction


Question59:-The substance which get transformed or which undergo Chemical Reaction is called



Reactants


Question60:-The new substance formed as a result of Chemical Reaction is called



Products


Question61:-Chemical Reaction in which light energy is either absorbed or released is called



Photochemical Reaction


Question62:- Chemical Reaction in which electric energy is either absorbed or released is called



Electrochemical Reaction


Question63:- Rearrangement of atoms in a given substance take place and a new substance is formed in



Isomerisation Reaction

Question64:- A reaction in which heat energy is either absorbed or released is called



Thermochemical Reactions


Question65:-A reaction in which heat is evolved is called



Exothermic Reaction


Question66:-A reaction in which heat is absorbed is called



Endothermic Reaction


Question67:-The reactions in which there is an addition of oxygen or the removal of hydrogen



Oxidation


Question68:-The reaction in which there is a removal of oxygen or the addition of hydrogen



Reduction


Question69:-The colour of Blue Copper Sulphate is due to the presence of ------ in it



Water Crystallisation


Question70:-The number of electrons lost, gained or shared as a result of Chemical Bonding is



Oxidation Number


Question71:-In oxidation, Oxidation Number -----



Increases


Question72:-In reduction, Oxidaion Number -----



Decreases


Question73:-Oxidation Number of an Atom in free state is ----



Zero


Question74:-Oxidation Number of Alkali Metals in molecule is always is ----



+1


Question75:-Oxidation Number of Alkaline Earth Metals in a molecule is always ------



+2


Question76:-Sum of Oxidation Number of Atoms in a molecule is equal to ----



Zero


Question77:-A material which can not be broken down or changed into another substance using any chemical method is called



An Element


Question78:-The most common Element in atmosphere



Nitrogen


Question79:------ is the second most abundant element in the Earth Crust



Silicon


Question80:-The two Elements which are liquid at room temperature



Bromine & Mercury


Question81:-The Element having the maximum electronegativity is



Flourine


Question82:-Most Electropositive Element is



Francium


Question83:-Most Electropositive stable element is



Ceasium


Question84:----- element is largely used in photoelectric cells



Ceasium


Question85:----- element has the lowest Ionisation Energy



Ceasium


Question86:-The tenth most abundant element in the Earth Crust is



Phosphorous


Question87:-The most reactive form of Phosphorous



White Phosphorous


Question88:-Which is more stable (Red Phosphorous, White Phosphorous)



Red Phosphorous


Question89:---- is a strong poison



White Phosphorous


Question90:------- burns itself



White Phosphorous


Question91:------ preserves under water



White Phosphorous


Question92:----- is used in the manufacture of Match Boxes



Red Phosphorous


Question93:-Major Elements present in Sea-Water are



Chlorine , Sodium , Magnesium, Sulpher, Calcium, Potassium and Carbon


Question94:-The halogens extracted from the sea water is



Chlorine and Bromine


Question95:-------- is generally used as a Thermometric Fluid



Mercury


Question96:- Which element is kept by covwering wax



Lithium


Question97:-The Element with hte highest Melting Point is



Carbon


Question98:-The metal with highest Melting Point



Tungston


Question99:- The most reactive Element



Flourine


Question100:- The radio active liquid element



Francium