Answer Q35, 36, 37 The atomic number of an element is:Number of electrons in á neutral atomNumber of protons in the nucleusNumerical position of the element in the39.(lir).+41,0aIhe reducmg agent is(A) Mn (B) Ha) Fen (D) Mn0Which of the following experimentalPeriodic Table35.The melting points of magnesium oxide40.measure the rate of reaction between Cr.0 and (MgO) and barium oxide (BaO) are 3173 K andMnO)2Mnt) + 16Hg) + 50,0techniques may NOT be conveniently used to (MeO) and barium oxide (BaO) are 3173 K andand2196 K respectively. This is because:in acid medium? The cquation isTlhe barium ion is a smaller jon than themagnesium ionThe molar masses of the oxides are differentMagnesium ton has a high charge densityTeading to some covalent character41.methylamine dissolves in waterCH,NH, +H,0 =CH,NII + OH-Base 1 Acid 2 Acid 1 Base 2CHNH, is Lewis baseOH is a conjugate base of HyOCH NH/CH NH, is an acul/tbase conjugatepair- 2Mn + 10C0,+ NII,0(A) Titration (B) Colorimetry(C) Dilatometry D) Conductimetry3Which of the following equilibrium reactionsThe equilibrium below is ohtained when36.IS NOT affected by a change in pressure?2NO = N,04tan)NO + CO =2 Ne + COeB.(3)(C)N) + 3He) 2NIIe)(D)Question 37 and 38 refer to the electronicLontigarations below. Nitrogen has five valenceThe clements m the series Se to1Are callea d-block elementsAre all metals of high melting pointsHave an incompletely filled 3d suh-shell42.electrons.Considerthefollowngelectron2.with the exception of Cu and ZnThe ionization energy of a hydrogen alom isEnergy jump in the Balmer seriesObtained from the line enission spectrum of2p43.112.hydrogen gas3.Obtained at the beginaing of the nti37. Which epresents the grixtmd tatenitiogen?44.Which of the following statenicus apply tothe ethene (CHa) molecukeThe H-C- H bond angles are tetrahedralFour electrons are involved in bonding in the(B) (C)(D)Which represents the electron arrangement forN jon?(A) AB) (C)21carbon-carbon bondIt is planar in shape /38.3.(D)45.Instructions for questions 39-47 (NINE questions).In this section, ONE or MORE of the options givenmay be correct. Select your answer by means of thefollowing code.IL I and 2 only are correctIf 2 and 3 only are correctI13 only is correctle avTHD

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Accepted Answer

Answer 35:
Dilatometry is the study of the volume changes occuring during the chemical reaction.…