Chemistry : Organic Chemistry – Some Basic Principles and Techniques

An organic compound with molecular formula C₉H₁₀O forms 2, 4-DNP derivative, reduces Tollen's reagent and undergoes Cannizaro reaction. On vigorous oxidation it gives a dicarboxylic acid which is used in the preparation of terylene. Identify the organic compound.

The well known compounds, ( +) - lactic acid and (-) - lactic acid, have the same molecular formula, C₃H₆O₃. The correct relationship between them is

• constitutional isomerism

• geometrical isomerism

• identicalness

• optical isomerism

The stability of Me₂C=CH₂ is more than that of MeCH₂CH=CH₂ due to

• inductive effect of the Me groups

• resonance effect of the Me groups

• hyperconjugative effect of the Me groups

• resonance as well as inductive effect of the Me groups

Which of the following compounds has maximum volatility?

Which one of the following will show optical isomerism?

Which of the following compounds can exhibit both geometrical isomerism and enantiomerism ?

• ${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}$

• ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{CH}\left({\mathrm{CH}}_3\right)-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_3$

• ${\mathrm{CH}}_3{\mathrm{CH}}_2-\left({\mathrm{CH}}_3\right)\mathrm{C}=\mathrm{CH}-\mathrm{COOH}$

• ${\mathrm{CH}}_3-\mathrm{CHOH}-\mathrm{COOH}$

Give the IUPAC name of m-ClCH₂C₆H₄CH₂C(CH₃)₃

• 1-(3 - chloro - 3- methylphenyl)-2, 2- diethyl propane

• 2 - (3 - chloromethyl propyl) -2, 2- dimethyl propane

• 1 - (3 - chloromethyl phenyl)-3, 3- dimethyl propane

• 1 - chloromethyl - 3- (2, 2 - dimethyl propyl) benzene

A colourless water soluble solid A on heating gives equimolar quantities of B and C. B gives dense white fumes with HCl and C does so with NH₃. B gives brown precipitate with Nessler's reagent and C gives white precipitate with nitrates of Ag⁺, Pb⁺ and Hg⁺. A is

• NH₄Cl

• NH₄CO₃

• NH₄NO₂

• FeSO₄

The IUPAC name of the given compound is-

• 4-ethyl-5,6,7,9-tetramethyldeca-2, 9-diene

• 7-ethyl-2,4,5,6-tetramethyldeca-1, 8-diene

• 7-ethyl-2,4,5,6-tetramethyldeca-1, 7-diene

• 7-(1-propenyl)-2,3,4,5-tetramethyl non-1-ene

Caffeine has a molecular weight of 194 u. If it contains 28.9% by mass of nitrogen, number of atom of nitrogen in one molecular of caffeine is

• 4

• 6

• 2

• 3