1. Filtration of a mixture after extraction is important to ____
2. The process of converting low-grade petrol to high-grade one is called _____, while the thermal decomposition of a higher alkane fraction at high temperature to give smaller alkanes, alkenes, and sometimes hydrogen is called:
3. Which of the following can be used as a diagnostic test for terminal alkynes?
4. Carbonates of lithium are not stable like those of sodium due to:
5. The oxidation state of oxygen in alkali metal superoxides is:
6. Which of the following products is not obtained when methane undergoes chlorination in the presence of UV light?
7. The oxidizing agent in Tollen’s reagent is ____
8. Which of the following cleaning mixtures has the corrosive properties of concentrated H2SO4?
9. The Solvay process is applied to the production of:
10. The addition of HBr to alkenes and alkynes follows which reaction mechanism?
11. Which of the following organic compounds would you expect to observe a colour change when mixed with bromine water?
12. Which element group is the most reactive of all the metallic elements?
13. How many molecules of hydrogen are required for the conversion of alkynes to alkenes
14. Halogen atoms in the ground state have____ number of electrons in their p-orbital.
15. An unknown liquid Z was oxidized in the presence of excess sodium dichromate to produce liquid Y, which shows positive to the iodoform test. Z and Y are likely:
