1. In a surprisingly large number of their properties, Beryllium resembles Aluminium, and Boron resembles Silicon. Such a relationship is called:
2. Which of the following products is not obtained when methane undergoes chlorination in the presence of UV light?
3. The filtration of substantial quantities of a solid from a suspension in a liquid ____ of convenient size is employed
4. Which of the following alkali metals react vigorously with water, forms nitrides M₃N on reaction with nitrogen, and forms only the normal oxide M₂O on heating in air?
5. Na₂O, Al₂O₃, SiO₂, and SO₃ when arranged in order of increasing basicity gives:
6. The following is not a criterion for the purity of an organic compound:
7. The addition of HBr to alkenes and alkynes follows which reaction mechanism?
8. 1-butyne can be distinguished from 2-butyne by using_______
9. Alkynes are prepared from these compounds except:
10. Which of the following can be used as a diagnostic test for terminal alkynes?
11. Aromatic amines and amino-phenols have ____ color
12. Which of the following organic substances is colorless?
13. Which of the following is used as a diagnostic test for the unit -C≡C-H?
14. Miscible liquids with large differences in boiling point can be separated by a technique called:
15. The major product formed when 2-methylbut-2-ene is reacted with hydrogen bromide is_______
