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Chemistry Fsc Part 2 Chapter 5 Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | The most ionic is | HF HCl HBr HI |
| 2 | Which acid can not be stored in glass bottles. | HCl HF H2SO4 HNO3 |
| 3 | Which one of the following has highest melting and boiling points. | HF HBr HCl HI |
| 4 | Bromine can be liberated from KBr solution by the action of. | I2 solution Chlorine NaCl KI |
| 5 | The halogens ae best described by which of the following statements. | Their outer shell is complete Most of them are colourless They all are oxidizing agent They all are gases at room temperature |
| 6 | Which one of the following uses is not correctly related with the halogen. | fluorine -------- Teflon Chlorine ---------Bleaching powder Bromine ---------------PVC plastics Iodine -----------Iodex |
| 7 | Colour of which halogen is not correctly related. | F2 --- colourless gas Cl2---- greenish yellow gas Br2----- Reddish brown liquid I2-------- grayish Black solid |
| 8 | Stability of halogen molecules decreases from | F2 to I1 Cl2 to I2 I2 to F2 I2 to Cl2 |
| 9 | Which statement is correct about the given reaction. 2NaOH + Cl2 --------------- NaCl + NaCIO + H2O |
Cl is oxidized and O is reduced Cl is reduced and O is oxidized Cl is oxidized as well as reduced Neither Cl nor oxygen is reduced or oxidized |
| 10 | An element that has a high ionization energy and tends to be chemically inactive would most likely to be | An alkali metal A transition element A noble gas A halogen |
| 11 | Which halogen occurs naturally in a positive oxidation state. | Fluorine Chlorine Bromine Iodine |
| 12 | Bleaching powder may be produced by passing chlorine over. | Calcium carbonate Hydrated calcium sulphate Anhydrous calcium sulphate Calcium hydroxide |
| 13 | The anhydride of HCIO4 is | CIO3 CIO2 Cl2O5 Cl2O7 |
| 14 | Which halogen will react spontaneously with Au to produce Au3+ | Br2 F2 I2 Cl2 |
| 15 | Hydrogen bond is the strongest between the molecules of. | HF HCl HBr HI |
| 16 | Chlorine heptoxide reacts with water to form | Hypochlorous acid Chloric acid Perchloric acid Chlorine and oxygen |
| 17 | Which of the following hydrogen halide is the weakest acid in solution. | HF HBr HI HCl |
