Blog

Q.19 According to the molecular orbital theory, bond order for H2+ species is Options: (A) 0.5 (B) 1.0 (C) 1.5 (D) 2.0 Bond Order of H2+ – Molecular Orbital Theory […]

Q.18 A molecular electronic excited state has a lifetime of 10−9 s. The uncertainty in measuring the frequency (Hz) of the electronic transition is approximately Options: (A) h⁄4π × 109 […]

Q.17 Consider the following equilibrium: SO2 (g) + ½ O2 (g) ⇌ SO3 (g),   ΔH = −23.5 kcal mol−1 The formation of SO3 is favoured by Options: (A) compression […]

Q.16 The correct order of acidity is Options: (A) C6H5COOH < CH3COOH < C6H5OH < C2H5OH (B) CH3COOH < C6H5COOH < C2H5OH < C6H5OH (C) C2H5OH < C6H5OH < C6H5COOH […]

Q.15 The shape of PCl5 is Options: (A) tetrahedral (B) square planar (C) trigonal bipyramidal (D) square pyramidal PCl5 (phosphorus pentachloride) molecular geometry questions test VSEPR theory and hybridization concepts […]

Q.14 Which one of the following compounds is known as silanes? Options: (A) Silicon hydrides (B) Silicon halides (C) Silicon hydroxides (D) Silicon oxides Silanes represent a fundamental class of […]

Q.13 Trouton’s rule is obeyed by Options: (A) hydrogen (B) methanol (C) benzene (D) acetic acid Trouton’s Rule states that for many non-polar liquids, the molar entropy of vaporization ΔSvap […]

Q.12 The major product for the following reaction is Introduction Friedel–Crafts alkylation reactions are commonly tested in organic chemistry, especially questions involving carbocation rearrangements. In this problem, benzene reacts with […]

Q.11 Electrophile among the following is Options: (A) NH3 (B) SO3 (C) NO2 (D) CH≡C− Introduction In organic chemistry, identifying whether a species is an electrophile or a nucleophile is […]

Q.10 The fuel consumed by a motorcycle during a journey while traveling at various speeds is indicated in the graph below. Fuel Consumption: kilometres per litre Speed: kilometres per hour […]