Strong Nucleophile in polar aprotic solvent?

Related Mcqs:

1. Which one is not a nucleophile ?

   A. C2H5O- B. SCN- C. NH3 D. H3C+...

2. Alkyl halides are considered to be very reactive compounds towards nucleophile because_________________?

   A. they have an electrophilic carbon B. they have an electrophilic carbon & a good leaving group C. they have an electrophilic carbon & a bad leaving group D. they have a nucleophilic carbon & a good leaving group...

3. Which of the following is the best explanation that CO2 is non polar molecule __________________?

   A. Linear geometry B. Dipole moment is zero C. Sp hybridization D. None...

4. Which one of the following has polar covalent bond ?

   A. HF B. CH4 C. H2 D. N2...

5. Benzene is a good solvent for__________________?

   A. fats B. resins C. iodine D. all the above...

6. A technique of partition chromatography in which the solvent is in a pool at the bottom of container_______________?

   A. Adsorption chromatography B. Ascending chromatography C. Radial chromatography D. Descending chromatography...

7. In crystallization if the solvent is inflammable then direct heating is________________?

   A. needed B. avoided C. depends on temperature D. crystallization does not involve heating...

8. The solvent or mixture of solvents used for separation of compounds is called____________________?

   A. Stationary phase B. Mobile phase C. Dynamic phase D. Static phase...

9. Number of moles in 1 kg of solvent is called_________________?

   A. normality B. molarity C. molality D. mole fraction...

10. Solvent used in separation of biomolecules is _______________?

    A. Acetone B. Trichloroacetic acid C. Ether D. Alcohol Submitted by: Safeullah Bullo...