Identify the correct statements from the following:
A. Heisenberg uncertainty principle is applicable to electrons.
B. The size of \(2p_x\) orbital is less than the size of \(3p_x\) orbital.
C. The energy of \(2s\) orbital of H atom is equal to the energy of \(2s\) orbital of Li.
D. The electronic configuration of Cr is \([\text{Ar}] 3d^5 4s^1\)
Choose the correct answer from the options given below:

The minimum energy that must be possessed by photons in order to produce the photoelectric effect with platinum metal is \(....\,\times 10^{-19} \,J\) [Given: The threshold frequency of platinum is \(1.3\) \(\times 10^{15} \,s ^{-1}\) and \(h =6.6 \times 10^{-34} \,J \,s\).]

The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process shown below \({O_3}(g)\, + \,C{l^ * }(g)\, \to \,{O_2}(g) + Cl{O^ * }(g)\) ..... \((i)\)               \([{K_i} = 5.2 \times {10^9}\,\,L\,mo{l^{ - 1}}\,{s^{ - 1}}]\) \(Cl{O^ * }(g) + {O^ * }(g)\, \to \,{O_2}(g) + \,C{l^ * }(g)\) ..... \((ii)\)                \([{K_{ii}} = 2.6 \times {10^{10}}\,\,L\,mo{l^{ - 1}}\,{s^{ - 1}}]\) The closest rate constant for the overall reaction  \({O_3}(g){\mkern 1mu}  + {\mkern 1mu} {O^*}(g){\mkern 1mu}  \to {\mkern 1mu} 2{O_2}(g)\) is  ........... \(L\,\,mo{l^{ - 1}}\,{s^{ - 1}}\)

Consider the following reaction \(\mathrm{MnO}_2+\mathrm{KOH}+\mathrm{O}_2 \rightarrow \mathrm{A}+\mathrm{H}_2 \mathrm{O} .\) Product ' \(A\) ' in neutral or acidic medium disproportionate to give products ' \(\mathrm{B}\) ' and ' \(\mathrm{C}\) ' along with water. The sum of spin-only magnetic moment values of \(B\) and \(C\) is _______ \(BM\). (nearest integer) (Given atomic number of \(\mathrm{Mn}\) is \(25\) )

Consider the following data for the given reaction \(2 \mathrm{HI}_{(\mathrm{g})} \rightarrow \mathrm{H}_{2(\mathrm{g})}+\mathrm{I}_{2(\mathrm{g})}\). The order of the reaction is ................

	\(1\)	\(2\)	\(3\)
\(\text{HI} \left(\text{molL} ^{-1}\right)\)	\(0.005\)	\(0.01\)	\(0.02\)
Rate \(\left(\text{molL} ^{-1}\text s-1\right)\)	\(7.5 \times 10^{-4}\)	\(3.0 \times 10^{-3}\)	\(1.2 \times 10^{-2}\)

At a certain temperature in a \(5\,L\) vessel, \(2\,moles\) of carbon monoxide and \(3\,moles\) of chlorine were allowed to reach equilibrium according to the reaction, \(CO + C{l_2} \rightleftharpoons COC{l_2}\) . At equilibrium, if one mole of \(CO\) is present then equilibrium constant \((K_c)\) for the reaction is

Which among the following molecules is (a) involved in \(\mathrm{sp}^3 \mathrm{~d}\) hybridization, (b) has different bond lengths and (c) has lone pair of electrons on the central atom?

Let \(A=\left[a_{i j}\right]_{2 \times 2}\) where \(a_{i j} \neq 0\) for all \(i, j\) and \(A^2=I\). Let a be the sum of all diagonal elements of \(A\) and \(b =| A |\), then \(3 a ^2+4 b ^2\) is equal to

Let \(S = \left\{A = \begin{bmatrix} a & b \\ c & d \end{bmatrix} : a, b, c, d \in \{0, 1, 2, 3, 4\} \text{ and } A^2 - 4A + 3I = 0\right\}\) be a set of \(2 \times 2\) matrixes. Then the number of matrixes in \(S\), for which the sum of the diagonal elements is equal to \(4\), is:

In the following reaction sequence The compound \(I\) is \(\mathop I\limits_{({C_3}{H_6}C{l_2})} \xrightarrow{{KOH(aq)}}II\xrightarrow[{(ii){H_2}O/{H^ + }}]{{(i)C{H_3}MgBr}}III\xrightarrow{{Anhy.ZnC{l_2} + Conc.HCl}}\) given turbidity immediately

Let \(\lambda\) be an interger. If the shortest distance between the lines \(x -\lambda=2 y -1=-2 z\) and \(x = y +2 \lambda= z -\lambda\) is \(\frac{\sqrt{7}}{2 \sqrt{2}},\) then the value of
\(|\lambda|\) is ...... .

An organic compound gives \(0.220 g\) of \(CO _2\) and \(0.126 g\) of \(H _2 O\) on complete combustion. If the \(\%\) of carbon is 24 then the \(\%\) hydrogen is \(......\times 10^{-1} \cdot(\) Nearest integer \()\)

Given below are two statements:
Statement-I: The first ionization enthalpy of Cr is lower than that of Mn.
Statement-II: The second and third ionization enthalpies of Cr are higher than those of Mn.
In the light of the above statements, choose the correct answer from the options given below :