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Here are a few questions from fiitjee RSM whose answers i would like to verify as i am not too sure about them: Single option correct: 1. extraction of Zn from Zns is done by a)electrolytic reduction b)roasting followed by re ...
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Structures of (SiH3)3N and (CH3)3N are the different - Why? ...
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why the reaction 194 0 194 Au + e -------> Pt 79 -1 78 is called K electron capture????????? ...
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Can anyone please explain the following processes for manufacture of steel in simple lines. [1] (1) Bessemer Process (2) Open Hearth Process (3) L.D. Process ...
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1) Among the following, the one having highest enthalpy of hydration is - a)H+ b)Li+ c)Be 2+ d)Al 3+ 2) For the balanced redox reac.n - aNO3- + bAs2S3 +4H2O -------> xAsO4-3 + yNO + z3SO4 2- + 8H+ Identify the Incorrect st ...
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1.... why gamma rays do nt effect photographic screen despite hving high frequency ?????/ is it due to their non material nature????..........wat are constituent particles of gamma rays???? ...
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what is velocity constant 'k' of a reaction????? ...
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As we known , the number of unpaired valence electrons is the valency therebye, Boron (2s2 2p1) should have monovalency , but it is invariably trivalent , never monovalent why ? ...
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Identify Inorganic salt (A) which is hydrated and light green in colour and gives following reactions : (i) (A) decolorises acidified MnO4-and turns acidified Cr2O72- green. (ii) (A) in aq. solution gives light green turbidit ...
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What is the effective nuclear charge at the periphery of nitrogen atom when an extra electron is added in the formation of an anion.Compare this value when the atom is ionised. ...
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(IE)1 and (IE)2 of Mg(g) are 740 and 1450 kJ mol-1. Calculate percentage of Mg+(g) and Mg2+(g) if 1 g of Mg(g) absorbs 50.0 kJ of energy. ...
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n0/2 atoms of X(g) are converted in to X+ (g) by energy ∆H,KJ .n0/2 atom atoms of X(g) are converted in to X+(g) and n0/2 atoms of X(g) converted in to X-(g) by energy ∆H2. calculate the ionization energy and electron aff ...
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Why do Mno4- and Cr2O72- show color? ...
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Arrange in increasing order of complex forming tendency: Ca2+, Fe2+, Fe3+, Cr2+ ...
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Aqueous silver nitrate is treated with successive additions of: (i) an excess of aqueous potassium chloride; (ii) an excess of aqueous ammonia; (iii) an excess of aqueous potassium bromide. Which of the following diagrams rep ...
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*Image* Based on this above graph , the correct answers are (a) At point ‘A’ ∆G° becomes O for the reaction. (b) Below point A magnesium can reduce alumina above this point. Aluminium can reduce magnesium oxide. (c) Mo ...
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whats the order of basic nature of the compounds NF3,PF3,AsF3,SbF3,BiF3 ? And why ? ...
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single choice correct Q1 WHich pair can form alloy ? a)Zn,Pb b)Fe,Hg c)Fe,C d)C,Pt Q2 consider [Ag(NH3)2]+,[Ag(CN)2]-,[Ag(S2O3)2]3- Which of the following are true abt these ?? a)Ag+ acts as lewis base b)hybd of Ag+ is sp2 c) ...
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these are ques to which i dont have answers Write the all possible names of following compounds 1)K3[Co(NO2)6] a)Fischer salt b)potassium cobaltnitrite c)potassium hexanitrocobaltate(III) d)potassium cobalt nitrite 2)Na2[Fe(C ...
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T/F Q1 Lithium is st. reducing agent among alkali metals Q2 BeF2 has highest MP among flourides of 2nd gp.\ more than one correct Q3 ionic oxides having NCl type strucutre and 6:6 cooridnation ar ?? a)SrO b)CaO c)BeO d)MgO Is ...
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Complexes in which two metals of different oxidation state are close together are frequently highly coloured.Why? ...
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Which has highest dipole moment? CH3Cl CHCl3 CH2Cl2 CCl4 ...
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why is a compound with paired electrons diamagnetic and unpaired paramagnetic? ...
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find in order the Ratio of σ and Πbonds: A-tetracyanomethane B-CO2 C-benzene D-1,3 buta-di-ene ...
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Q1 Ammonia +Hypochlorite anion→ ?? Q2 When zeolite which is hydrated with sodium aluminium islicate is treated with hard water,the sodium ions are exchanged by ? Q3 NH4NO3 +Heat → ? Q4 NH4NO2 +heat→ ? Q5 Glycine +heat â ...
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Q1 Which can not reduce acidified soln of MnO4 - a)H2C2O4 b)H2 c)H d)Fe2+ Q2 which oxidising agent is not used for oxidn of mangantae to permanagante a)CO2 b)H2O2 Q3 which of the following cannpt be oxidised by acidified KMnO ...
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Does solid BeH2 have linear structure? ...
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Q1 St acid among follwing in non polar acetic acid medium is ? a)HF b)H2SO4 c)HClO4 d)HI Q2 Write ionic eqn for NaH +H2O→ ? Q3 Why there is very litle diff in acid strength of H3PO2,H3PO3,H3PO4 ?? Q4 T/F i)carbonates of Na, ...
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Structure of S2Cl2 is analogous to SOCl2 CO2 H2S H2O2 ...
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This dbt is from what aieee said at http://targetiit.com/iit-jee-forum/posts/ino5-12714.html in post#12 Q Why ionic azides are stable while covalent azides are not ?? ...