Chemistry : Organic Chemistry – Some Basic Principles and Techniques

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

Among the following the strongest nucleophile is

• C₂H₅SH

• CH₃COO^-

• CH₃NH₂

• NCC${\mathrm{H}}_2^{-}$

Following compounds are respectively ..... geometrical isomers

• P - cis ;Q - cis ; R - trans

• P - cis ; Q - trans ; R - trans

• P - trans ; Q - cis ; R - cis

• P - cis ; Q - trans ; R - cis

Which is more basic oxygen in an ester?

• Carbonyl oxygen, α

• Carboxyl oxygen, β

• Equally basic

• Both are acidic oxygen

Which of the following compounds undergoes nucleophilic substitution reaction most easily?

Sometimes explosion occurs while distilling ethers. It is due to the presence of

• peroxides

• oxides

• ketones

• aldehydes

The concentration of an organic compound in chloroform is 6.15 g per 100 mL of solution. A portion of this solution in a 5 cm polarimeter tube causes an observed rotation of -1.2°. What is the specific rotation of the compound?

• +12$°$

• -3.9$°$

• -39$°$

• +61.5$°$