# Recent questions and answers in Chemical Bonding and Molecular Structure

Questions from: Chemical Bonding and Molecular Structure

### Statement 1: p-hydroxybenzonic acid has a lower boiling point than $O- hydroxybenzonic acid. Statement 2: O-Hydroxybenzonic acid has intramolecular hydrogen bonding. ### Statement 1:$LiCl$is predominantly a covalent compound. Statement 2: Electronegativity difference between$Li$and$Cl$is too small. ### Which one is most ionic? ### According to molecular orbitals theory which of the following statement about the magnetic character and bond order is correct regarding$O_2^{+}$? ### Among the following compounds the one that is polar and has the central atom with$SP^2$hybridisation is ### The type of hybrid orbitals used by the chlorine atom in$ClO^{-}_2$is ### If a molecule$M X_3$has zero dipole moment. the sigma bonding orbitals used by M. (atomic number <21) are ### The rate law of a reaction$A+B \to $product is rate$=K [A]^n[B]^m$. On doubling the concentration of A and halving the concentration of B. Thr ratio of new rate to the earlier rate of reaction will be : ### Units of rate constant of first and zero order reaction in terms of molarity M are respectively : ###$t \large\frac{1}{4}$can be taken as the time taken for concentration of reactant to drop to$\large\frac{3}{4}$of its initial value. If the rate constant for a first order reaction is$K,$then$t \large\frac{1}{4}$can be written as ### The half - life period of a first order chemical reaction is$6.93$minutes. The time required for the completion of$99\%$of the chemical reaction will be$(\log 2 =0.301)$### If I is the intensity of absorbed light and C is the concentration of AB for the photochemical process$AB+hr \to AB^ x$the rate of formation of$AB^x$is directly proportional X : ### The temperature coefficient of a reaction is : ### The lightening of fire files is : ### Large increase in the rate of reaction due to rise in temperature is due to : ### One Einstein = N$\times$quanta of energy where N is : ### For an endothermic reaction where$\Delta H$represents the enthalpy of the reaction in$kj/mol$. the minimum value for the energy of activation will be ### The rate of a reaction gets doubled when the temperature changes from$7^{\circ}C$to$17^{\circ}$. By what factor will it change for the temperature change from$17^{\circ}C$to$27^{\circ}C$### For a first order reaction , the plot of t against log C gives a straight with slope equal to : ### Half- life$(t_1)$of the first order reaction and half-life$(t_2)\$ of the second order reaction are equal. Hence ratio of the rate of the rate at te start of the reaction.

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