What is the bond angle in \(\mathrm{ClO}_2\) (OClO)?

At $291 \mathrm{K}$, saturated solution of ${\mathrm{BaSO}}_4$ was found to have a specific conductivity of $3.648\times {10}^{-6}{\mathrm{ohm}}^{-1}{ \mathrm{cm}}^{-1}$ and that of water being used is $1.25\times {10}^{-6}{\mathrm{ohm}}^{-1}{ \mathrm{cm}}^{-1}$. If the ionic conductance's of ${\mathrm{Ba}}^{2+}$ and ${\mathrm{SO}}_4^{2-}$ are $110$ and $136.6{\mathrm{ohm}}^{-1}{ \mathrm{cm}}^2{ \mathrm{mol}}^{-1}$ respectively, the solubility of ${\mathrm{BaSO}}_4$ at $291 \mathrm{K}$ will be [Atomic masses of$\left.\mathrm{Ba}-137,S-32,0-16\right]$

Match the following.

Match the following
\begin{array}{ll}
\multicolumn{1}{l}{\begin{array}{l}
List-I \\
(Process)
\end{array}} & \begin{array}{l}
List-II \\
(Catalyst)
\end{array} \\
(A) Ostwald's process & (I) \mathrm{NO} \\
(B) Lead Chamber process & (II) \mathrm{Fe} \\
(C) Deacon's process & (III) \mathrm{Rh} \\
(D) Haber's process & (IV) \mathrm{CuCl}_2
\end{array}
The correct answer is

The X formed in the following reaction sequence and its structural type are respectively

Using the standard electrode potentials given below identify the correct statements from the following.
\[
\begin{aligned}
\mathrm{Fe}^{2+}+2 e^{-} \longrightarrow \mathrm{Fe} ; E^{\circ} & =-0.44 \mathrm{~V} \\
\mathrm{Cu}^{2+}+2 e^{-} \longrightarrow \mathrm{Cu} ; E^{\circ} & =+0.34 \mathrm{~V} \\
\mathrm{Ag}^{+}+e^{-} \longrightarrow \mathrm{Ag} ; E^{\circ} & =+0.80 \mathrm{~V}
\end{aligned}
\]
(i) Copper can displace iron from \(\mathrm{FeSO}_4\) solution.
(ii) Iron can displace copper from \(\mathrm{CuSO}_4\) solution.
(iii) Silver can displace copper from \(\mathrm{CuSO}_4\) solution.
(iv) Iron can displace silver from \(\mathrm{AgNO}_3\) solution.

The number of network solids and ionic solids in the list given below is respectively ${\mathrm{H}}_2\mathrm{O}\left(\mathrm{ice}\right), \mathrm{AlN}, \mathrm{Cu}, {\mathrm{CaF}}_2 ,\mathrm{diamond}, \mathrm{MgO}, {\mathrm{CCl}}_{4,} \mathrm{ZnS}, \mathrm{Ag}, \mathrm{NaCl}, {\mathrm{SiO}}_2$

Let $\overrightarrow{a}=\hat{i}-\hat{j}, \overrightarrow{b}=\hat{j}-\hat{k}$ and $\overrightarrow{c}=\hat{k}-\hat{i}$. If $\overrightarrow{d}$ is a unit vector such $\overrightarrow{a}·\overrightarrow{d}=0=\left[\begin{array}{ccc}\overrightarrow{b}& \overrightarrow{c}& \overrightarrow{d}\end{array}\right],$ then $\overrightarrow{d}$ is

\(\int(x+1)(x+2)^4(x+3) d x\) is equal to

If \(t \in \mathbb{R}-\{-1\}\), then the locus of the point \(\left(\frac{3 a t}{1+t^3}, \frac{3 \mathrm{at}^2}{1+t^3}\right)\) is

The structure of \(\mathrm{XeOF}_4\) is

Let \(A\) and \(B\) be two symmetric matrices of same order. Then, the matrix \(A B-B A\) is

Unpolarised light from air incidents on the surface of a transparent medium of refractive index 1.414 such that the reflected light is completely polarised. Match the angles given in List-I with the corresponding values given in List-II.


The correct match is
Codes
\(\begin{array}{llll}
A & B & C & D
\end{array}\)