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A solution of two components containing $$n_1$$ moles of the 1st component and $$n_2$$ moles of the 2nd component is prepared. $$M_1$$ and $$M_2$$ are the molecular weights of component 1 and 2 respectively. If $$d$$ is the density of the solution in $$\text{g mL}^{-1}$$, $$C_2$$ is the molarity and $$x_2$$ is the mole fraction of the 2nd component, then $$C_2$$ can be expressed as:
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The variation of equilibrium constant with temperature is given below:
Temperature: , Equilibrium Constant:
$$T_1 = 25^\circ\text{C}$$ $$K_1 = 10$$
$$T_2 = 100^\circ\text{C}$$, $$K_2 = 100$$
The values of $$\Delta H^\circ$$, $$\Delta G^\circ$$ at $$T_1$$ and $$\Delta G^\circ$$ at $$T_2$$ (in $$\text{kJ mol}^{-1}$$) respectively, are close to [use $$R = 8.314\,\text{JK}^{-1}\text{mol}^{-1}$$]
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For the reaction
$$\text{Fe}_2\text{N}(s) + \frac{3}{2}\text{H}_2(g) \rightleftharpoons 2\text{Fe}(s) + \text{NH}_3(g)$$
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Arrange the following solutions in the decreasing order of pOH:
(A) 0.01 M HCl
(B) 0.01 M NaOH
(C) 0.01 M $$\text{CH}_3\text{COONa}$$
(D) 0.01 M NaCl
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Among the sulphates of alkaline earth metals, the solubilities of $$\text{BeSO}_4$$ and $$\text{MgSO}_4$$ in water, respectively, are:
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Which of the following compounds shows geometrical isomerism?
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Consider the following reactions:
'A' is:
The major product obtained from the following reaction is:
The major products of the following reaction are:
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The major product of the following reaction is:
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Consider the following reactions:
$$A \to P1;\; B \to P2;\; C \to P3;\; D \to P4$$
The order of the above reactions are a, b, c and d, respectively. The following graph is obtained when log[rate] vs log[conc.] are plotted:
Among the following, the correct sequence for the order of the reactions is:
Kraft temperature is the temperature:
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The correct statement with respect to dinitrogen is:
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The presence of soluble fluoride ion upto 1 ppm concentration in drinking water, is:
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The INCORRECT statement is:
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The set that contains atomic numbers of only transition elements, is:
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The lanthanoid that does NOT show +4 oxidation state is:
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The species that has a spin-only magnetic moment of 5.9 BM, is: ($$T_d$$ = tetrahedral)
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The increasing order of $$pK_b$$ values of the following compounds is:
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Consider the Assertion and Reason given below.
Assertion (A): Ethene polymerized in the presence of Ziegler Natta Catalyst at high temperature and pressure is used to make buckets and dustbins.
Reason (R): High density polymers are closely packed and are chemically inert. Choose the correct answer from the following:
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A spherical balloon of radius $$3\,\text{cm}$$ containing helium gas has a pressure of $$48 \times 10^{-3}\,\text{bar}$$. At the same temperature, the pressure, of a spherical balloon of radius $$12\,\text{cm}$$ containing the same amount of gas will be............ $$\times 10^{-6}\,\text{bar}$$.
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In an estimation of bromine by Carius method, $$1.6\,\text{g}$$ of an organic compound gave $$1.88\,\text{g}$$ of AgBr. The mass percentage of bromine in the compound is........ (Atomic mass, Ag = 108, Br = 80 $$\text{g mol}^{-1}$$)
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The elevation of boiling point of $$0.10\,\text{m}$$ aqueous $$\text{CrCl}_3 \cdot x\text{NH}_3$$ solution is two times that of $$0.05\,\text{m}$$ aqueous $$\text{CaCl}_2$$ solution. The value of $$x$$ is............ [Assume 100% ionisation of the complex and $$\text{CaCl}_2$$, coordination number of Cr as 6, and that all $$\text{NH}_3$$ molecules are present inside the coordination sphere]
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Potassium chlorate is prepared by the electrolysis of KCl in basic solution
$$6\text{OH}^- + \text{Cl}^- \to \text{ClO}_3^- + 3\text{H}_2\text{O} + 6e^-$$. If only 60% of the current is utilized in the reaction, the time (rounded to the nearest hour) required to produce $$10\,\text{g}$$ of $$\text{KClO}_3$$ using a current of $$2\,\text{A}$$ is........ (Given: F = 96,500 C/mol; molar mass of $$\text{KClO}_3$$ = 122 g mol$$^{-1}$$)
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The number of $$\text{Cl} = \text{O}$$ bonds in perchloric acid is, $$n$$.........
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