1. Which of the following is an electrophile?

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

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

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

5. 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?

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

7. 0.0833mol of carbohydrate of empirical formula CH₂O contain 1 g of hydrogen. The molecular formula of the carbohydrate is

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

9. The reaction

10. Inductive effect involves

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

12. Which element is estimated by Carius method

13. CH₃CH₂Cl undergoes homolytic fission to produce

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

15. 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

16. 59 g of an amide obtained from a carboxylic acid, RCOOH, liberated 17 g of ammonia upon heating with alkali. The acid is

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

18. The principle involved in paper chromatography is

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

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