The equilibrium constant for the reaction $${\mathrm{SO}}_3(\mathrm{g})\rightleftharpoons {\mathrm{SO}}_2(\mathrm{g})+\frac{1}{2}{\mathrm{O}}_2(\mathrm{g})$$ is $${\mathrm{K}}_{\mathrm{c}}=4.9\times 10^{-2}$$. The value of $${\mathrm{K}}_{\mathrm{c}}$$ for the reaction given below is $$2{\mathrm{SO}}_2(\mathrm{g})+{\mathrm{O}}_2(\mathrm{g})\rightleftharpoons 2{\mathrm{SO}}_3(\mathrm{g})$$ is :

For the given hypothetical reactions, the equilibrium constants are as follows : $$\begin{array}{rl}& \mathrm{X}\rightleftharpoons \mathrm{Y};{\mathrm{K}}_1=1.0\\ & \mathrm{Y}\rightleftharpoons \mathrm{Z};{\mathrm{K}}_2=2.0\\ & \mathrm{Z}\rightleftharpoons \mathrm{W};{\mathrm{K}}_3=4.0\end{array}$$ The equilibrium constant for the reaction $$\mathrm{X}\rightleftharpoons \mathrm{W}$$ is

The following reaction occurs in the Blast furnance where iron ore is reduced to iron metal $${\mathrm{Fe}}_2{\mathrm{O}}_{3(s)}+3{\mathrm{CO}}_{(g)}\rightleftharpoons {\mathrm{Fe}}_{(\mathrm{l})}+3{\mathrm{CO}}_{2(g)}$$ Using the Le-chatelier's principle, predict which one of the following will not disturb the equilibrium.

Given below are two statements : Statement I : On passing $${\mathrm{HCl}}_{(\mathrm{g})}$$ through a saturated solution of $${\mathrm{BaCl}}_2$$, at room temperature white turbidity appears. Statement II : When $$\mathrm{HCl}$$ gas is passed through a saturated solution of $$\mathrm{NaCl}$$, sodium chloride is precipitated due to common ion effect. In the light of the above statements, choose the most appropriate answer from the options given below :

The ratio $$\frac{K_P}{K_C}$$ for the reaction : $${\mathrm{CO}}_{(\mathrm{g})}+\frac{1}{2}{\mathrm{O}}_{2(\mathrm{g})}\rightleftharpoons {\mathrm{CO}}_{2(\mathrm{g})}$$ is :

At $$-20^{\circ }\mathrm{C}$$ and $$1\mathrm{atm}$$ pressure, a cylinder is filled with equal number of $${\mathrm{H}}_2,{\mathrm{I}}_2$$ and $$\mathrm{HI}$$ molecules for the reaction $${\mathrm{H}}_2(\mathrm{g})+{\mathrm{I}}_2(\mathrm{g})\rightleftharpoons 2\mathrm{HI}(\mathrm{g})$$, the $${\mathrm{K}}_{\mathrm{p}}$$ for the process is $$x\times 10^{-1}$$. $$\mathrm{x}=$$ __________. [Given : $$\mathrm{R}=0.082\mathrm{L}\mathrm{atm}{\mathrm{K}}^{-1}{\mathrm{mol}}^{-1}$$]

Given below are two statements : Statement (I) : The ${\mathrm{NH}}_2$ group in Aniline is ortho and para directing and a powerful activating group. Statement (II) : Aniline does not undergo Friedel-Craft's reaction (alkylation and acylation). In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements : Statement (I) : Aminobenzene and aniline are same organic compounds. Statement (II) : Aminobenzene and aniline are different organic compounds. In the light of the above statements, choose the most appropriate answer from the options given below :

The azo-dye $$(Y)$$ formed in the following reactions is Sulphanilic acid $$+{\mathrm{NaNO}}_2+{\mathrm{CH}}_3\mathrm{COOH}\to \mathrm{X}$$.

Given below are two statements : Statement I : Aniline reacts with con. $${\mathrm{H}}_2{\mathrm{SO}}_4$$, followed by heating at $$453-473\mathrm{K}$$ gives $$\mathrm{p}$$-aminobenzene sulphonic acid, which gives blood red colour in the 'Lassaigne's test'. Statement II : In Friedel - Craft's alkylation and acylation reactions, aniline forms salt with the $${\mathrm{AlCl}}_3$$ catalyst. Due to this, nitrogen of aniline aquires a positive charge and acts as deactivating group. In the light of the above statements, choose the correct answer from the options given below :

the arenium ion which is not involved in the bromination of Aniline is __________.

Which of the following reaction is correct?

The product A formed in the following reaction is

The products A and B formed in the following reaction scheme are respectively

Following is a confirmatory test for aromatic primary amines. Identify reagent (A) and (B).

Major product of the following reaction is

Which of the following nitrogen containing compound does not give Lassaigne's test ?

Given below are two statements : Statement (I) : All the following compounds react with p-toluenesulfonyl chloride. $${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NH}}_2{\left({\mathrm{C}}_6{\mathrm{H}}_5\right)}_2\mathrm{NH}{\left({\mathrm{C}}_6{\mathrm{H}}_5\right)}_3\mathrm{N}$$ Statement (II) : Their products in the above reaction are soluble is aqueous $$\mathrm{NaOH}$$. In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements : Statement (I) : Kjeldahl method is applicable to estimate nitrogen in pyridine. Statement (II) : The nitrogen present in pyridine can easily be converted into ammonium sulphate in Kjeldahl method. In the light of the above statements, choose the correct answer from the options given below :

Identify compound (Z) in the following reaction sequence.