265 questions from a source that prints this span of years rather than the year of each question. Each opens with its answer and explanation.
ABC26IN0543 · The indicator phenolphthalein changes colour at pH ~ 9. This indicator is NOT suitable for accurate determination of the end point in the… · Analytical Chemistry & Instrumental – General
ABC26IN0544 · In ammonical buffer, oxine (8-hydroxyquinoline) forms yellow precipitate with · Analytical Chemistry & Instrumental – General
ABC26IN0545 · In the measurement of hardness of water by complexometric titration, identify P and Q in the following equation. [P]- + [H2Y]2- → [Q]2- +… · Analytical Chemistry & Instrumental – General
ABC26IN0546 · The reagent ‘oxine’ commonly used in analytical chemistry is · Analytical Chemistry & Instrumental – General
ABC26IN0547 · Indicator used in redox titration is · Analytical Chemistry & Instrumental – General
ABC26IN0552 · The metal ion of an enzyme involved in hydration of CO2 is · Bioinorganic – General
ABC26IN0553 · Low-spin iron(III) centre is present in · Bioinorganic – General
ABC26IN0556 · Carbonic anhydrase is an example of · Bioinorganic – General
ABC26IN0557 · The correct option for the metal ion present in the active site of myoglobin, hemocyanin and vitamin B12, respectively, is · Bioinorganic – General
ABC26IN0560 · The CORRECT combination for metalloenzymes given in Column I with their catalytic reactions in Column II is · Bioinorganic – General
ABC26IN0561 · Among the following, the biomolecule with a direct metal-carbon bond is · Bioinorganic – General
ABC26IN0563 · Hybridization of the central atoms in I3 -, ClF3 and SF4, respectively, are · Chemical Bonding – General
ABC26IN0564 · The geometries of the species [Br3]+, [Br3]-and [BrF3] are, respectively · Chemical Bonding – General
ABC26IN0565 · Correct trend in the bond order is · Chemical Bonding – General
ABC26IN0567 · The bond order of N2 +ion is ____ (Round off to one decimal place) · Chemical Bonding – General
ABC26IN0568 · Consider the following four xenon compounds: XeF2, XeF4, XeF6 and XeO3 The pair of xenon compounds expected to have non-zero dipole moment… · Dipole Moment Polarity
ABC26IN0570 · The correct order of bond angles in BF3, NH3, NF3 and PH3 is · Chemical Bonding – General
ABC26IN0572 · The bond order of Be2 molecule is · Chemical Bonding – General
ABC26IN0573 · Effective nuclear charge for 3d electron in vanadium (atomic number =23) according to Slater's rule is · Bent Rule Walsh Diagrams
ABC26IN0575 · The intermolecular vander Waals potential is inversely proportional to r6. The corresponding force is proportional to · Chemical Bonding – General
ABC26IN0576 · The species having trigonal pyramidal shape is · Chemical Bonding – General
ABC26IN0577 · The predicted geometry of TeF4 by VSEPR theory is · VSEPR Geometry
ABC26IN0578 · Among the following, the isoelectronic pair is · Chemical Bonding – General
ABC26IN0579 · Among Ar, NH4 Cl, HF and HCl, the strength of interatomic / intermolecular forces follows the order: · Chemical Bonding – General
ABC26IN0580 · The most polar compound among the following is: · Chemical Bonding – General
ABC26IN0582 · Molecular shape of SOCl2 is · Chemical Bonding – General
ABC26IN0586 · Which of the following has a square planar geometry according to the VSEPR theory? Atomic number: B=5, S =16, Xe=54. · VSEPR Geometry
ABC26IN0587 · In which of the following C-H bond has the highest ' s ' character? · Chemical Bonding – General
ABC26IN0588 · At room temperature, HCl is a gas while HF is a liquid because · Hydrogen Bonding Weak Interactions
ABC26IN0590 · The formal charges on the nitrogen atom from left to right in the azide anion, [N=N=N]-are · Chemical Bonding – General
ABC26IN0595 · The shape of CH3 -ion is: · Chemical Bonding – General
ABC26IN0596 · The fluoride, whose value of dipole moment is not equal to zero, is · Dipole Moment Polarity
ABC26IN0597 · The average value of C-C bond in graphite is: · Chemical Bonding – General
ABC26IN0598 · The geometry of SF4 is · VSEPR Geometry
ABC26IN0599 · Among the following complexes, (i) [Ru(bipyridyl)3]+ (ii) [Cr(EDTA)]- (iii) trans- [CrCl2 (oxalate) 2]3- (iv) cis- [CrCl2 (oxalate) 2]3-… · Coordination Compounds – General
ABC26IN0600 · The crystal field stabilization energy of high spin d7 octahedral complex is · Coordination Compounds – General
ABC26IN0602 · The complex with the most intense colour among the following is · Coordination Compounds – General
ABC26IN0604 · The octahedral crystal field splitting (Delta 0) of d orbital energies of the following metal ions decreases in the order · Coordination Compounds – General
ABC26IN0605 · The optical absorption spectrum of [Ti (H2 O)6]3+ has its absorption maximum at 20300 cm-1. The magnitude of crystal field stabilization… · Coordination Compounds – General
ABC26IN0608 · The ligand with only sigma (sigma) bonding character is · Coordination Compounds – General
ABC26IN0611 · For tetrahedral complexes, which always exhibit high spin states, the maximum CFSE (crystal field stabilization energy) is: · Coordination Compounds – General
ABC26IN0615 · Which one of the following configuration will show Jahn-Teller distortion in an octahedral field? · Coordination Compounds – General
ABC26IN0616 · The colour of potassium dichromate is due to · Coordination Compounds – General
ABC26IN0617 · Addition of an aqueous solution of Fe(II) to potassium hexacyanochromate (III) produces a brick-red coloured complex, which turn dark green… · Coordination Compounds – General
ABC26IN0618 · The oxide that has the inverse spinel structure is · Coordination Compounds – General
ABC26IN0622 · The tetrachloro complexes of Ni(II) and Pd(II) respectively, are (atomic numbers of Ni and Pd are 28 and 46 respectively) · Coordination Compounds – General
ABC26IN0626 · The correct order of crystal field strength is : (Given: en = enthylenediamine) · Coordination Compounds – General
ABC26IN0628 · The electronic transitions responsible for the colour of K2 Cr2 O7 and porphyrin in their solid state respectively are: · Coordination Compounds – General
ABC26IN0629 · A filter paper moistened with cadmium acetate solution turns yellow upon exposure to H2 S. The transition responsible for the yellow colour… · Coordination Compounds – General
ABC26IN0630 · The first row transition metal complexes having tetrahedral geometry are high-spin due to · Coordination Compounds – General