Recent questions in Some basic concepts in chemistry

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The nucleus \({ }_{29}^{64} \mathrm{Cu}\) accepts an orbital electron to yield,

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Ferric ion forms a Prussian blue precipitate due to the formation of

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The half life of \(\mathrm{C}^{14}\) is 5760 years. For a \(200 \mathrm{mg}\) sample of \(\mathrm{C}^{14}\), the time taken to change to \(25 \mathrm{mg}\) is

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Which of the following has the strongest H-bond?

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The number of unpaired electrons in Ni (atomic number = 28) are

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Which of the following eletronic configuration is not possible ?

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If aniline is treated with conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\) and heated at \(200^{\circ} \mathrm{C}\), the product is

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Methoxybenzene on treatment with HI produces

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The number of alkene (s) which can produce 2-butanol by the successive treatment of (i) \(\mathrm{B}_{2} \mathrm{H}_{6}\) in tetrahydrofuran solvent and (ii) alkaline \(\mathrm{H}_{2} \mathrm{O}_{2}\) solution is

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\(\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{C} \mathrm{MgBr}\) can be prepared by the reaction of

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The ease of hydrolysis in the compounds \(\mathrm{CH}_{3} \mathrm{COCl}\) (I), \(\mathrm{CH}_{3}-\mathrm{CO}-\mathrm{O}-\mathrm{COCH}_{3}(\mathrm{II}), \mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}(\mathrm{III})\) and \(\mathrm{CH}_{3} \mathrm{CONH}_{2}\) (IV) is of the order

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Silver chloride dissolves in excess of ammonium hydroxide solution. The cation present in the resulting solution is

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The main reason the \(\mathrm{SiCl}_{4}\) is easily hydrolysed as compared to \(\mathrm{CCl}_{4}\) is that

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\(\mathrm{Cl}_{2} \mathrm{O}_{7}\) is the anhydride of

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\(\mathrm{SiO}_{2}\) is attacked by which one / ones of the following?

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Which of the following statement(s) is/are incorrect:

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For spontaneous polymerization, which of the following is (are) correct?

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\(\mathrm{CH}_{3}-\mathrm{O}-\mathrm{CH}_{2}-\mathrm{Cl} \stackrel{\mathrm{aq}^{-1-1 \mathrm{OH}}}{\rightarrow} \mathrm{CH}_{3}-\mathrm{O}-\mathrm{CH}_{2}-\mathrm{OH}\) Which information below regarding this reaction is applicable?

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A homonuclear diatomic gas molecule shows 2-electron magnetic moment. The one-electron and two-electron reduced species obtained from above gas molecule can act as both oxidizing and reducing agents. When the gas molecule is one-electron oxidized the bond length decreases compared to the neutral molecule. The gas molecule is

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A solution is saturated with \(\mathrm{SrCO}_{3}\) and \(\mathrm{SrF}_{2} .\) The \(\left[\mathrm{CO}_{3}{ }^{2-}\right]\) is found to be \(1.2 \times 10^{-3} \mathrm{M}\). The concentration of \(\mathrm{F}\) - in the solution would be

asked Dec 11, 2021 in Some basic concepts in chemistry by kritika (90.1k points)

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