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Q. Complete the reaction:

Q. Which of these is a comparatively insignificant factor affecting the magnitude of Specific optical rotation?

Q. Which would be the product when furan undergoes sulfonation in the presence of SO3 and pyridine?

Q. Identify the reaction: When thiophene react with dimethyl formamide in the presence of POCl3, it will produce thiophene – 2 – carboxaldehyde.

Q. Which drug(s) contain thiophene ring in its(their) structure?

Q. Which compound is most basic?

Q. What will be the product of the following reaction?

Q. Which statement is true of 1,3-dimethylcyclobutane?.

Q. What can be said with certainty if a compound has [!] D/25 = -9.25º ?

Q. Furan on treatment with acid undergoes protonation and form________.