1. The oxidation number of oxygen in alkaline earth metal superoxides is:
2. Na₂O, Al₂O₃, SiO₂, and SO₃ when arranged in order of increasing basicity gives:
3. For the suction filtration of small quantities of solid less than 5g contained in a small volume of liquid, a small conical Buchner funnel known as _____ is used
4. The fraction obtained during fractional distillation of petroleum containing C15–C20 is used for:
5. Substances which decompose or otherwise undergo structural modification on contact with air must be recrystallized in______ atmosphere
6. In ozonolysis, the double bond of an alkene is broken and _____ and ______ are formed depending upon the structure of the parent alkene
7. How many molecules of hydrogen are required for the conversion of alkynes to alkenes
8. 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?
9. Which of the following is the mineral of magnesium?
10. The Solvay process is applied to the production of:
11. Filtration of a mixture after extraction is important to ____
12. The main classes of reagents commonly encountered in organic reactions are:
13. The structural determination of an organic compound involves:
14. Which of the following is not an electrophile?
15. Which of the following is not a nucleophile?
