Recent questions in Some basic concepts in chemistry

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In a close-packed body-centred cubic lattice of potassium, the correct relation between the atomic radius (r) of potassium and the edge-length (a) of the cube is

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How many faradays are required to reduce \(1 \mathrm{~mol}\) of \(Cr_{2} O_{7}{ }^{2-}\) to \(\mathrm{Cr}^{3+}\) in acid medium

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Assuming the compounds to be completely dissociated in aqueous solution, identify the pair of the solutions that can be expected to be isotonic at the same temperature:

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Which one of the following corresponds to a photon of highest energy?

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You are supplied with \(500 \mathrm{ml}\) each of \(2 \mathrm{~N} \mathrm{HCl}\) and \(5 \mathrm{~N} \mathrm{HCl}\). What is the maximum volume of \(3 \mathrm{M} \mathrm{HCl}\) that you can prepare using only these two solutions?

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The compound that would produce a nauseating smell/odour with a hot mixture of chloroform and ethanolic potas sium hydroxide is

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ADP and ATP differ in the number of

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The isomerisation of 1-butyne to 2-butyne can be achieved by treatment with

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When \(\mathrm{BaCl}_{2}\) is added to an aqueous salt solution, a white precipitate is obtained. The anion among \(\mathrm{CO}_{3}{ }^{2-}\), \mathrm{SO}_{3}{ }^{2-}\) and \(\mathrm{SO}_{4}{ }^{2-}\) that was present in the solution can be :

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The correct basicity order of the following lanthanide ions is

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\(\mathrm{PbCl}_{2}\) is insoluble in cold water. Addition of \(\mathrm{HCl}\) increases its solubility due to

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24 answers

Which of the following atoms should have the highest"telectron affinity?

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The ground state magnetic property of Bzand C \(_{2}\) molecules will be

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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

asked Dec 14, 2021 in Some basic concepts in chemistry by kritika (90.1k points)

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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

asked Dec 14, 2021 in Some basic concepts in chemistry by kritika (90.1k points)

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

asked Dec 12, 2021 in Some basic concepts in chemistry by kritika (90.1k points)

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