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Dissolving NaCN in de-ionized water will result in a solution having

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\(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{~F}^{18}\) is a \(\mathrm{F}^{8}\) radio-isotope labelled organic compound. \(\mathrm{P}^{8}\) decays by positron emission. the product resulting or decay is

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In a flask, the weight ratio of \(\mathrm{CH}(\mathrm{g})\) and \(\mathrm{SO}_{2}(\mathrm{~g})\) at \(298 \mathrm{~K}\) and 1 bar is \(1: 2\). The ratio of the number of molecules off \(\mathrm{SO}_{2}(\mathrm{~g})\) and \(\mathrm{CH}_{4}(\mathrm{~g})\) is

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\(0.126 \mathrm{~g}\) of an acid is needed to completely neutralize \(20 \mathrm{ml} 0.1\) (N) NaOH solution. The equivalent weight of the acid is

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Which of the following sets of quantum numbers represents the Electron of \(\mathrm{Cr}(\mathrm{Z}=24) ?\)

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If the given four electronic configurations (i) \(n=4, l=1\) (ii) \(\mathrm{n}=4, l=0\) (iii) \(\mathrm{n}=3, l=2\) (iv) \(\mathrm{n}=3, l=1\) are arranged in order of increasing energy, then the order will be

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White phosphorus \(\mathrm{P}_{4}\) has the following characteristics:

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Among the following the extensive variables are

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Which statements are correct for the peroxide ion?

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\([\mathrm{X}]+\) dil. \(\mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow[\mathrm{Y}]:\) Colourless, suffocating gas \([\mathrm{Y}]+\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}+\mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow\) Green colouration of solution

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During a reversible adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio \(\frac{C_{p}}{C_{v}}\) for the gas is

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A metal \(M\) (specific heat \(0.16\) ) forms a metal chloride with \(=65 \%\) chlorine present in it. The formula of the metal chloride will be

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The number of possible organobromine compounds, which can be obtained in the allylic bromination of 1 - butene with \(\mathrm{N}\) - bromosuccinimide is

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$$ \begin{aligned} &{[\mathrm{P}] \stackrel{\mathrm{Br}_{2}}{\longrightarrow} \mathrm{C}_{2} \mathrm{H}_{4} \mathrm{Br}_{2} \underset{\mathrm{NH}_{3}}{\stackrel{\mathrm{NaNH}_{2}}{\longrightarrow}}[\mathrm{Q}]} \\ &{[\mathrm{Q}] \stackrel{20 \% \mathrm{H}_{2} \mathrm{SO}_{4}}{\mathrm{Hg}^{2}+\Delta}[\mathrm{R}] \stackrel{\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}}{\longrightarrow}[\mathrm{S}]} \end{aligned} $$ The species \(\mathrm{P}, \mathrm{Q}, \mathrm{R}\) and \(\mathrm{S}\) respectively are

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Which of the following is least thermally stable?

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At room temperature, the reaction between water and fluorine produces

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Out of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one ?

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Which of the set of oxides are arranged in the proper order of basic, amphoteric, acidic?

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Which of the following is present in maximum amount in 'acid rain' ?

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Which one of the following is a condensation polymer?

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