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observe the given reaction 1/2 Cl2 → Cl-1 δH(enthlpy in kcal/mol)=29.0 the strength of covalent bond in chlorine is(in kcal/mol) a)58.0 b)29.0 c)14.5 D)98.2 ...
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among the following substituted silanes the one which will give rise to cross linked silicon polymer on hydrolysis a)R4Si b)RSiCl3 c)R2Sicl2 d)R3sicl ...
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among the following substituted silanes the one which will give rise to cross linked silicon polymer on hydrolysis a)R4Si b)RSiCl3 c)R2Sicl2 d)R3sicl ...
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among the following substituted silanes the one which will give rise to cross linked silicon polymer on hydrolysis a)R4Si b)RSiCl3 c)R2Sicl2 d)R3sicl ...
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wat is mother liquor??? i saw in preparation of Mohr Salt but dint understand what it is?? ...
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Why is the organic compound converted to inorganic before detecting the presence for any element like N 2 or sulphur in it??? Is it absolute necessity.?? ...
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which has greater tendency to form complex? a)lanthanoids b)actinoids PLease no weird answers,provide a suitale logic ...
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Which of the following statements are true ? a.)HF is less polar then HBr b.)absolutely pure water does not contains ions c.)chemical bond formation takes place when force of attraction overcomes forces of repulsion d)in cova ...
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which is most basic among the following? MgO Na2O CaO Al2O3 how u will decide,,,,,,,,,,,,xplain me...... the maximum number of hydrogen bondsthat can be formed by a molecule of water----------- ...
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Pb3O4 + HNO3 What will be the products ?? One option was it remains unreacted. Other options were asking which oxide remains unreacted and which nitrate will be formed ?? ...
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wat is oxidation number of iron in Fe(CO)5? xplain how to calculate ...
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wht do we mean by thermal stability of s block elements??? ...
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IUPAC nomenclature of Na2[OsCl5N] ...
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In Zeigler Natta polymerisation of ethylene what is the active species?? ...
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use of Br2 water and NaOH to 3rd group ppt facilitates in??????? ...
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what are confirmatory tests for detection of Ag+,Ca2+ and Mg2+????? ...
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an aq solution of FeSO4 ,Al2(SO4)3 and chrome alum is heated wid excess Na2O2 and filtered .d materials obtained are a)a colurless filtrate n green residue b)yellow filtrate n green residue c)yellow filtrate n brown residue d ...
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AMong the folllowing paramagnetic compound is ????? a)Na2O2 b)O3 c)N2O d)KO2 explain also ...
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Pl. mention the imp. points of Extraction of varoious elements here........ Main points cud include : Purification, Main Method of exctraction, Concentration n Purification........ Self-Reduction n Carbon reduction r imp. Lea ...
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A)Kaolin P)Zinc B)Amblygonite Q)Aluminium C)Wilemite R)Silicate ore D)Calamine S)Lithium ...
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correct order of increasing C-O bond length of CO,CO32-,CO2 is????? ...
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identify least stable ion amongst following: a)Li- b)Be- c)B- d)C- ans given is b but my answer is a becoz Bond order=0 from MOT for a) why is my ans wrong????? ...
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why p- dihydroxybenzene is polar ...
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A) cassiterite 1. ruby B) corundum 2. Al2O3 C) chalcocite 3. Tin stone D) chalcopyrites 4. copper glance 5. SnO2 6. CuFeS2 ...
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4) Dry bleach is done by A. O 3 B. Cl2 C. H 2O2 D. SO 2 ...
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q8 *Image* ANS = 10 kaise?? ...
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Q. On the basis of VBT describe the structure of [V(H2O)6]3+ and [V(CN)6]3- ...