ABC26IN1254 · Among the oxides of nitrogen, N2 O3, N2 O4, and N2 O5 the compound(s) having N-N bond is/are · JUNE 2013
ABC26IN0724 · The solid state structure of HF is · 2005-2022
ABC26IN1255 · Identify the pairs in which the covalent radii of elements are almost similar arrayll (A) Nb, Ta & (B) Mo, W \\ (C) La, Lu & (D) Sc, Y array · JUNE 2013
ABC26IN0725 · The soft Lewis base(s) is(are) · 2005-2022self-practice
ABC26IN1256 · The correct equilibrium order for the interconversion of different forms of SiO2 is · JUNE 2013
ABC26IN0184 · The reaction of FeCl3 .6 H2 O with SOCl2 yields. · 2013
ABC26IN1257 · The reaction of FeCl3 6 H2 O with SOCl2 yields. · DEC 2013
ABC26IN0185 · Among the molten alkali metals, the example of an immiscible pair (in all proportions)is · 2013
ABC26IN1258 · Among the molten alkali metals, the example of an immiscible pair (in all proportions)is · DEC 2013
ABC26IN0728 · The major product formed in the following reaction K+O2 is · 2005-2022
ABC26IN0729 · Among the following, the compound that forms the strongest hydrogen bond is · 2005-2022
ABC26IN1260 · The reason for the chemical inertness of gaseous nitrogen at room temperature is best given · DEC 2013
ABC26IN0730 · The stability of adducts H3 B PF3, H3 B NMe3, H3 B CO, H3 B OMe2 follows the order · 2005-2022
ABC26IN0187 · Two tautomeric forms of phosphorus acid are and · 2013
ABC26IN0731 · The reason(s) for the lower stability of Si2 H6 compared to C2 H6 is/are · 2005-2022self-practice
ABC26IN1262 · Two tautomeric forms of phosphorus acid are · DEC 2013
ABC26IN0188 · The solid state structure of aluminum fluoride is · 2013
ABC26IN1263 · The solid state structure of aluminum fluoride is · DEC 2013
ABC26IN0189 · The orbital interactions shown below represent · 2013
ABC26IN1264 · The orbital interactions shown below represent · DEC 2013
ABC26IN0190 · In a specific reaction, hexachlorocyclotriphosphazene, N3P3Cl6 was reacted with a metal fluoride to obtain mixed halo derivatives namely… · 2013
ABC26IN1265 · In a specific reaction, hexachlorocyclotriphosphazene, N3P3Cl6 was reacted with a metal fluoride to obtain mixed halo derivatives namely… · DEC 2013
ABC26IN1266 · Xenon forms several fluorides and oxofluorides which exihibit acidic behaviour. The correct sequence of descending Lewis acidity among the… · DEC 2013
ABC26IN0191 · Number of isomeric derivatives possible for the neutral closo-carborane, C2B10H12 is · 2013
ABC26IN1267 · Number of isomeric derivatives possible for the neutral closo-carborane, C2 B10 H12 is · DEC 2013
ABC26IN0192 · Reactions of elemental as with hot and conc. HNO3, and H2SO4 respectively, give · 2014
ABC26IN1269 · Reactions of elemental as with hot and conc. HNO3, and H2 SO4 respectively, give · JUNE 2014
ABC26IN0193 · Chromite ore on fusion with sodium carbonate gives · 2014
ABC26IN1270 · Chromite ore on fusion with sodium carbonate gives · JUNE 2014
ABC26IN1271 · The correct order of decreasing electronegativity of the following atoms is, · JUNE 2014
ABC26IN1272 · The correct order of the size of S, S2-, S2+ and S4+ species is, · JUNE 2014
ABC26IN1273 · The reaction between SbF5 and two equivalents of HF leads to the formation of · DEC 2014
ABC26IN1274 · Among F-, Na+, O2- and Mg2+ ions, those having the highest and the lowest ionic radii respectively are · DEC 2014
ABC26IN0194 · The reaction between diphenyldichlorosilane and water in 1:2 molar ratio gives product A which on heating above 100 yields a cyclic or… · 2014
ABC26IN1275 · The reaction between diphenyldichlorosilane and water in 1: 2 molar ratio gives product A which on heating above 100 C yields a cyclic or… · DEC 2014self-practice
ABC26IN1276 · A borane (X) is reacted with ammonia to give a salt of borohydride (Y). The 11B NMR spectrum of Y consists of a triplet and a quintet. The… · DEC 2014
ABC26IN1277 · 12-Crown-4 binds with the alkali metal ions in the following order : Li+ Na+>K+>Cs+. It is due to the · DEC 2014
ABC26IN1278 · The main products of the reaction of equimolar quantities of XeF6 with NaNO3 are · DEC 2014
ABC26IN0195 · All forms of phosphorus upon melting, exist as · 2014
ABC26IN1279 · All forms of phosphorus upon melting, exist as · JUNE 2015
ABC26IN0196 · The correct set of pseudo halide anions is · 2014
ABC26IN1280 · The correct set of pseudo halide anions is · JUNE 2015
ABC26IN1281 · The oxoacid of phosphorus having P atoms in +4,+3, and +4 oxidation states respectively, is · JUNE 2015
ABC26IN0199 · Consider the following reaction : N3P3Cl6 + 6\,HNMe2 [A]N3P3Cl3(NMe2)3 + 3\,Me2NH.HCI The number of possible isomers for [A] is · 2015
ABC26IN1285 · Consider the following reaction : N3P3Cl6 + 6\,HNMe2 N3P3Cl3(NMe2)3 + 3\,Me2NH.HCl (A) The number of possible isomers for [A] is · DEC 2015
ABC26IN1286 · The reaction of BCl3, with NH4Cl gives product A which upon reduction by NaBH4 gives product B. Product B upon reacting with HCl affords… · DEC 2015
ABC26IN1287 · Protonated form of ZSM-5 catalyzes the reaction of ethene with benzene to produce ethylbenzene. The correct statement for this catalytic… · DEC 2015
ABC26IN1288 · The numbers of P-S and P-P bonds in the compound P4 S3 are, respectively · JUNE 2016
ABC26IN0200 · The compound which dissolves in POCl3 to give a solution with highest chloride ion concentration ,is - · 2016
ABC26IN1289 · The compound which dissolves in POCl3 to give a solution with highest chloride ion concentration, is · JUNE 2016