List of practice Questions

The correct order of wavelength ($\lambda_{max}$) of the halide to metal charge-transfer band of [Co(NH$_3$)$_5$Cl]$^{2+}$ (I), [Co(NH$_3$)$_5$Br]$^{2+}$ (II) and [Co(NH$_3$)$_5$I]$^{2+}$ (III), is

For a reaction of the type A + B $\rightarrow$ Products, the unit of the rate constant is mol L$^{-1}$ s$^{-1}$. The overall order of the reaction is

Given that the radius of the first Bohr orbit of hydrogen atom is 53 pm, the radius of its third Bohr orbit is ................ pm. (Round off to the nearest integer)

Assume that the reaction of MeMgBr with ethylacetate proceeds with 100% conversion to give tert-butanol. The volume of 0.2 M solution of MeMgBr required to convert 10 mL of a 0.025 M solution of ethylacetate to tert-butanol is ................ mL. (Round off to one decimal place)

The collision flux of a monoatomic gas on copper surface is \(3.0 \times 10^{18}\) m\(^-2\) s\(^{-1}\). Note that copper surface forms a square lattice with lattice constant of 210 pm. If the sticking coefficient of the atom with copper is 1.0, the time taken by the gas to form a complete monolayer on the surface is ................ s. (Round off to one decimal place)

A radioactive sample decays to 10% of its initial amount in 4600 minutes. The rate constant of this process is ................ hour\(^{-1}\). (Round off to two decimal places)

(R)-2-methyl-1-butanol has a specific rotation of +13.5°. The specific rotation of 2-methyl-1-butanol containing 40% of the (S)-enantiomer is ................. (Round off to one decimal place)

The ionization energy of hydrogen atom is 13.6 eV and the first ionization energy of sodium atom is 5.1 eV. The effective nuclear charge experienced by the valence electron of sodium atom is ................. (Round off to one decimal place)

The magnetic field strength required to excite an isolated proton to its higher spin state with an electromagnetic radiation of 300 MHz is ................ Tesla. (Round off to two decimal places)
\text{[Magnetogyric ratio of proton is } 26.75 \times 10^7 \text{ rad T}^{-1} \text{ s}^{-1}]

The value of \(n\) for the complex [Fe(CO)\(_4\)(SiMe\(_3\))]^\(n\) satisfying the 18-electron rule is ................

In the structure of P\(_4\)O\(_{10}\), the number of P-O-P bond(s) is ................

Number of vertices in an icosahedral closo-borane is ................

One liter of a buffer solution contains 0.004 mole of acetic acid (pK\(_a\) = 4.76) and 0.4 mole of sodium acetate. The pH of the solution is ................. (Round off to two decimal places)

The correct statement(s) among the following is/are

The bond order of N\(_2^+\) ion is ................. (Round off to one decimal place)

The unit of the constant ‘a’ in van der Waals equation of state of a real gas can be expressed as

Among the following, microwave active molecule(s) is/are

The true statement(s) regarding the brown ring test carried out in the laboratory for the detection of NO\(_3^-\) is/are

The true statement(s) regarding the carbonic anhydrase enzyme is/are

The correct statement(s) about NO$_2$, NO$_2^+$ and CO$_2$ is/are

The compound formed upon subjecting an aliphatic amine to Lassaigne’s test is

Among the following compounds, the one having the lowest boiling point is

The correct option having one complex from each of the following pairs which is more reactive towards the oxidative addition reaction by hydrogen molecule is

Among the following, the correct statement is