Chemistry : Organic Chemistry – Some Basic Principles and Techniques

Which of the following reacts with benzene in presence of anhydrous aluminum chloride and forms acetophenone ?

• CH₃Cl

• CH₃COOH

• CH₃CHO

• CH₃COCl

Which of the following reactions does not liberate gaseous product ?

• AlCl₃ + NaOH →

• NaOH + P(white) + H₂O →

• Al + NaOH $\stackrel{∆}{\to }$

• Zn + NaOH $\stackrel{∆}{\to }$

CH₃CH₂OH $\underset{\mathrm{Step}- 1}{\overset{{\mathrm{Cl}}_2}{\to }}$ CH₃CHO $\underset{\mathrm{Step}-2}{\overset{3{\mathrm{Cl}}_2}{\to }}$ Cl₃CCHO

In the above reaction, the role of Cl₂ in Step-1 and Step-2 respectively is:

• oxidation, chlorination

• reduction, chlorination

• oxidation, addition

• reduction,substitution

[Co(NH₃)₅SO₄]Br and [Co(NH₃)₅Br]SO₄ are a pair of ....... isomers.

• ionisation

• ligand

• coordination

• hydrate

According to Cahn-Ingold-Prelog sequence rules, the correct order of priority for the given groups is

• -COOH > -CH₂OH > -OH > -CHO

• -COOH > -CHO > -CH₂OH > -OH

• -OH > -CH₂OH > -CHO > -COOH

• -OH > -COOH > -CHO > -CH₂OH

What are X and Y respectively in the following reaction?

Z-product $\stackrel{\mathrm{Y}}{\leftarrow }$ 2-butyne $\stackrel{\mathrm{X}}{\to }$ E-product

• Na/ NH₃ (liq) and Pd/ BaSO₄ + H₂

• Ni/ 140°C and Pd/ BaSO₄ + H₂

• Ni/ 140°C and Na/ NH₃ (liq)

• Pd/ BaSO₄ + H₂ and Na/ NH₃ (liq)

The IUPAC name of the following compound is-

• ethoxy propane

• 1,1-dimethyl ether

• 2-ethoxy isopropane

• 2-ethoxy propane

Calorific value of producer gas is low because of

• high percent of N₂

• low percent of CO₂

• high percent of CO

• low percent of N₂

One mole of alkene $\underline{\mathrm{X}}$ on ozonolysis gave one mole of acetaldehyde and one mole of acetone. The IUPAC name of $\underline{\mathrm{X}}$ is

• 2-methyl-2-butene

• 2-methyl-1-butene

• 2-butene

• 1-butene

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°