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1. a) CH3C b) CH3CH2CH=CH2c) CH3COCH3 d) CH3CH2CHODeselect Answer
2. Kjeldahl’s method cannot be used to estimate nitrogen for which of the following compounds?a) C6H5NO2b) C6H5NH2c) CH3CH2CNd) NH₂-CO-NH2Deselect Answer
3. A mixture of acetone and methanol can be separated bya) steam distillationb) vacuum distillationc) fractional distillationd) sublimationDeselect Answer
4. The hybridisation state of carbon in the carbocation C6H5CH2+ isa) sp b) sp2c) sp3 d) sp or sp2Deselect Answer
5. Which of the following does not obey Huckel rule ?Deselect Answer
6. Primary amine with Hinsberg’s reagent forms a) N-alkylbenzenesulphonamide soluble in KOH solution.b) N-alkylbenzenesulphonamide insoluble in KОН solution.c) N,N-dialkylbenzenesulphonamide soluble in KOH solution.d) N,N-dialkylbenzenesulphonamide insoluble in KOH solution.Deselect Answer
7. Which of the following compounds cannot exhibit keto-enol tautomerism?Deselect Answer
8. The Lassaigne’s extract is boiled with conc. HNO, while testing for halogens. By doing so, it:a) Decomposes Na₂S and NaCN, formedb) Helps in the precipitation of AgClc) Increases the solubility product of AgCld) Increases the concentration of NO, ionsDeselect Answer
9. Which of these statements about [Co (CN)6 ]3- is true?a) [Co (CN) 6 ] 3- has four unpaired electrons and will be in a low-spin configurationb) [Co (CN) 6 ] 3- has four unpaired electrons and will be in a high-spin configurationc) [Co (CN) 6 ]3- has no unpaired electrons and will be in a high-spin configurationd) [Co (CN) 6 ] 3- has no unpaired electrons and will be in a low-spin configurationDeselect Answer
10. [Co(NH3)4(NO2)2]Cl exhibitsa) Linkage isomerism, ionization isomerism and optical isomerismb) Linkage isomerism, ionization isomerism and geometrical isomerismc) Ionization isomerism, geometrical isomerism and optical isomerismd) Linkage isomerism, geometrical isomerism and optical isomerismDeselect Answer
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