1. Which of the following is an electrophile?

2. The I.U.P.A.C. name of CH₃COCH(CH₃)₂ is

3. The I.U.P.A.C. name of CH₃ – CH = CH COO C₂H₅ is

4. The number and type of bonds between two carbon atoms in CaC₂ are

5. 0.0833mol of carbohydrate of empirical formula CH₂O contain 1 g of hydrogen. The molecular formula of the carbohydrate is

6. Which one of the following conformations of cyclohexane is chiral?

7. Electronegativity of carbon atoms depends upon their state of hybridisation. In which of the following compounds, the carbon marked with an asterisk is most electronegative?

8. If 0.228 g of silver salt of dibasic acid gave a residue of 0.162 g of silver on ignition then molecular weight of the acid is

9. In the Dumas method, the nitrogen present in organic compound gets converted to

10. The reaction

11. The principle involved in paper chromatography is

12. If there is no rotation of plane polarized light by a compound in a specific solvent, thought to be chiral, it may mean that

13. 59 g of an amide obtained from a carboxylic acid, RCOOH, liberated 17 g of ammonia upon heating with alkali. The acid is

14. Which element is estimated by Carius method

15. A crystalline solid possess which one of the following property?

16. Insulin contains 3.4% sulphur. The minimum molecular weight of insulin is

17. CH₃CH₂Cl undergoes homolytic fission to produce

18. Inductive effect involves

19. The I.U.P.A.C. name of

20. Which of the following behaves both as a nucleophile and as an electrophile?