The oxide that shows magnetic property is :

The oxide which contains an odd electron at the nitrogen atom is ..... .

Complex \(A\) has a composition of \(H _{12} O _{6} Cl _{3} Cr\). If the complex on treatment with conc. \(H _{2} SO _{4}\) loses \(13.5 \%\) of its original mass, the correct molecular formula of \(A\) is : [Given : atomic mass of \(Cr =52\) \(amu\) and \(Cl =35\, amu ]\)

Given below are two statements: one is labelled as Assertion \((A)\) and the other is labelled as Reason \((R)\) Assertion \((A)\) : Boron is unable to form \(BF _{6}^{3-}\) Reason \((R)\) : Size of \(B\) is very small. In the light of the above statements, choose the correct answer from the options given below.

\(20\text{ g}\) hemoglobin in a \(1\text{ L}\) aqueous solution (A) at \(300\text{ K}\) is separated from pure water by semi permeable membrane. At equilibrium the height of solution in a tube dipped in a solution (A) is found to be \(80.0\text{ mm}\) higher than the tube dipped in water. The molar mass of hemoglobin is _______ \(\text{kg mol}^{-1}\). (Nearest integer)
(Given : \(g = 10\text{ m s}^{-2}\), \(R = 8.3\text{ kPa dm}^3\text{ K}^{-1}\text{mol}^{-1}\), density of solution \(= 1000\text{ kg m}^{-3}\))

Given below are two statements, one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\). Assertion \(A\) : Benzene is more stable than hypothetical cyclohexatriene. Reason \(R\) : The delocalized \(\pi\) electron cloud is attracted more strongly by nuclei of carbon atoms. In the light of the above statements, choose the correct answer from the options given below:

Match List \(I\) with List \(II\).

List \(I\) Isomeric pairs	List \(II\) Type of isomers
\(A\) Propanamine and \(N-\)Methylethanamine	\(I\) Metamers
\(B\) Hexan\(-2-\)one and Hexan\(-3-\)one	\(II\) Positional isomers
\(C\) Ethanamide and Hydroxyethanimine	\(III\) Functional isomers
\(D\) \(o-\)nitrophenol and \(p-\)nitrophenol	\(IV\) Tautomers

Choose the correct answer from the options given below :-

The imaginary part of \((3+2 \sqrt{-54})^{1 / 2}-(3-2 \sqrt{-54})^{1 / 2}\) can be

The number of bridged oxygen atoms present in compound \(B\) formed from the following reactions is \(Pb \left( NO _{3}\right)_{2} \stackrel{673 K }{\longrightarrow} A + PbO + O _{2}\) \(A \stackrel{\text { Dimerise }}{\longrightarrow} B\)

Given below are two statements: one is labelled as Assertion \((A)\) and the other is labelled as Reason \((R)\) : Assertion \((A)\) : \(\mathrm{S}_{\mathrm{N}} 2\) reaction of \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Br}\) occurs more readily than the \(\mathrm{S}_{\mathrm{N}} 2\) reaction of \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\). Reason \((R)\) : The partially bonded unhybridized p-orbital that develops in the trigonal bipyramidal transition state is stabilized by conjugation with the phenyl ring. In the light of the above statements, choose the most appropriate answer from the options given below:

The students \(S _{1}, S _{2}, \ldots \ldots, S _{10}\) are to be divided into \(3\) groups \(A , B\) and \(C\) such that each group has at least one student and the group \(C\) has at most \(3\) students. Then the total number of possibilities of forming such groups is ........ .

For the estimation of nitrogen, \(1.4\, g\) of an organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in \(60\, mL\) of \(\frac{M}{10}\) sulphuric acid. The unreacted acid required \(20\, mL\) of \(\frac{M}{10}\) sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is .....\(\%\)

Which of the following is the wrong statement?