Organic Chemistry II - Quiz II

Which of the following is an electrophilic reagent?

• RLi         

• RMgX

• RCOX

• R₂CuLi

The compound that bears the chromophore is called _________________.

• Chromatogram    

• Chromogram

• Chromogen 

• Chromotone

As the conjugation decreases the energy required to excite the electron from HOMO to LUMO decreases.

• True

• False

How many isoprene units present in diterpenes?

• 2

• 3

• 4

• 6

Identify the monomer of rubber.

• Isobutanol 

• Isopropanol

• Isoprene

• Isatin

Geraniol on distillation with Se gives _____________.

• o-Cymene  

• o-Xylene

• p-Xylene

• p-Cymene

Malonic ester on hydrolysis followed by decarboxylation gives ____________.

• Formic acid       

• Acetic acid

• Propanoic acid

• Malic acid

Which of the following is an example for vat dye?

• Malachite green

• Methyl orange

• Indigo

• Alizarin

Alizarin on mild oxidation with MnO₂ gives _____________.

• Porphyrin     

• Coumarin

• Curcumin

• Purpurin

Which reagent is used for the conversion of ketone to tertiary alcohol?

• NBS 

• DIBAL 

• Methyl lithium

• Trimethyl silyl chloride