Inorganic Chemistry PYQ — Page 58

Amount of oxalic acid present in a solution can be determined by its titration with $\mathrm{KMnO}_4$ solution in the presence of $\mathrm{H}_2 \mathrm{SO}_4$. The titration gives unsatisfactory result when carried out in the presence of $\mathrm{HCl}$, because $\mathrm{HCl}$

Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is

In which of the following octahedral complexes of Co (at. no. 27), will the magnitude of $\Delta_{\circ}$ be the highest?

The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizinig order of the polarizing power of the cationic species, $\mathrm{K}^{+}, \mathrm{Ca}^{2+}, \mathrm{Mg}^{2+}, \mathrm{Be}^{2+}$ ?

Which of the following nuclear reactions will generate an isotope?

The actinoids exhibits more number of oxidation states in general than the lanthanoids. This is because

Identify the incorrect statement among the following

The stability of dihalides of $\mathrm{Si}, \mathrm{Ge}, \mathrm{Sn}$ and $\mathrm{Pb}$ increases steadily in the sequence

Identify the incorrect statement among the following

Which of the following species exhibits the diamagnetic behaviour?

In which of the following ionization processes, the bond order has increased and the magnetic behaviour has changed?

Which one of the following has a square planar geometry?

Which of the following hydrogen bonds is the strongest?

What products are expected from the disproportionation reaction of hypochlorous acid?

How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a $\mathrm{Ca}^{2+}$ ion?

Nickel $(Z=28)$ combines with a uninegative monodentate ligand $\mathrm{X}^{-}$to form a paramagnetic complex $\left[\mathrm{NiX}_4\right]^{2-}$. The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively

The increasing order of the first ionization enthalpies of the elements B, P, S and F (lowest first) is

The decreasing values of bond angles from $\mathrm{NH}_3\left(106^{\circ}\right)$ to $\mathrm{SbH}_3\left(101^{\circ}\right)$ down group-15 of the periodic table is due to

Which of the following molecules/ions does not contain unpaired electrons?

Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture?

Which of the following chemical reactions depicts the oxidizing behaviour of $\mathrm{H}_2 \mathrm{SO}_4$ ?

The IUPAC name for the complex $\left[\mathrm{Co}\left(\mathrm{NO}_2\right)\left(\mathrm{NH}_3\right)_5\right] \mathrm{Cl}_2$ is

Lanthanoid contraction is caused due to

In $\mathrm{Fe}(\mathrm{CO})_5$, the $\mathrm{Fe}-\mathrm{C}$ bond possesses