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1. Trioxygen Difluoride Reacts with Fluorine to Form A. Dioxygen Trifluoride B

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1. Trioxygen Difluoride Reacts with Fluorine to Form A. Dioxygen Trifluoride B 1. Trioxygen difluoride reacts with fluorine to form a. Dioxygen trifluoride b. Dioxygen difluoride c. Oxygen difluoride d. Oxygen & fluorine 2. I2O4 and I2O9 are salt like and a. Are considered as iodine salt b. Are used in table salt c. Are called as iodine – iodates d. None of them 3. Reaction of HClO4 with P2O5 produces a. Chlorine heptaoxide b. Chlorine dioxide c. Dichlorine monoxide d. Chlorine hexaoxide 4. Reaction of bromine vapours with mercuric oxide yields a. Bromine dioxide b. Bromine trioxide c. Bromine monoxide d. All of them 5. Iodine pentaoxide acts as a. An oxidizing agent b. Reducing agent c. Bleaching agent d. Dehydrating agent 6. HClO2 is called a. Hypochlorous acid b. Chlorous acid c. Perchloric acid d. None of them 7. Which compound is used for the quantitative analysis of CO? a. O3F2 b. ClO2 c. Br2O d. I2O5 8. Bleaching powder can be manufactured by a. Hasenclever’s method b. Beckmann’s method c. Both a & b d. None of them 9. Bleaching powder oxidizes NH3 & yields a. Chlorine gas b. Nitrogen gas c. NH4Cl d. None of them 10. Freon is the commercial name of a. fluorochlorcarbons b. Tetrafluoroethylene c. Fluoroethylene d. None of them 11. Halothane is used as a. Disinfectant b. Anaesthetic c. Fungicicle d. Insecticide 12. Which one of the following halides has the highest lattlice energies? a. Iodides b. Chlorides c. Fluorides d. None of them 13. Which one of the following Halogens has the highest oxidizing power? a. F b. Cl c. I d. Br 14. Which one of the following Halogens can oxidize all other halide ions to molecular Halogen? a. Cl b. F c. I d. Br 15. All halogens react with ________ to form hydrides. a. H2O b. H c. H2SO4 d. None of them 16. Which one of the following halogens requires sunlight for the reaction with Hydrogen? a. Cl b. Br c. I d. At 17. Direct combination of Hydrogen and Halogen is used as preparative method for a. HCl b. HBr c. HI d. Both a and b 18. Hydrogen fluoride is stored in a. Glass containers b. Teflon containers c. Polythene containers d. None of them 19. Which one of the following Halogens is a radioactive element? a. F b. At c. Cl d. I 20. Half life of Astatine is a. 8.3 hours b. 9hours c. 4.3 hours d. 15 hours 21. Halogens exist in nature as a. Atoms b. As discrete atomic forms c. As discrete molecular forms d. As ions 22. Chlorine has the following colour a. Green b. Yellow c. Greenish yellow d. Pale yellow 23. Bromine occurs in nature as a. Liquid of red brown colour b. Solid of red brown colour c. Gas of red brown colour d. None of them 24. The outer shell of Halogens have the following configuration a. ns2 , np3 b. ns2 , np4 c. ns2 , np5 d. ns1 , np6 25. Which one of the following elements has the highest I. E? a. F b. Cl c. Br d. I 26. The electron affinity values of Halogen are a. Large & negative b. Small & - ive c. Large & + ive d. Small & +ive 27. Elements with intermediate values of electronegativity are often found as: a. Ions b. Molecules c. Elemental form d. All of these 28. The intermolecular attraction is greater in a. Large molecules b. Small molecules c. Molecules having small masses d. None of them 29. Elements with higher values of the E.N usually exist as a. Negative ions b. + ive ions c. Carbanions d. None of them 30. Universal indicator can be decolorized when exposed to a. F2 b. Cl2 c. Br2 d. Both a and b 31. Oxidation state of F is a. Const & - 1 b. Variable & -1 , 1 c. Variable and – 1, 1, 2, 3 d. None of them 32. Which of the following elements is solid? a. F b. Cl c. I d. Br 33. All halides are usually a. Soluble in organic solvent b. Soluble in H2O c. Soluble in CCl4 d. All of them 34. Molecular formula of Halite is a. CaF2 b. NaCl c. CaCl2 d. NaIO3 35. Carnallite is represented by a. CaF2 . CaCo3 KI b. CaCl2 . MgCl2 . CuCO3 c. KCl . MgCl2 . 6 H2O d. CaF2 . 3Ca3 (PO2)2 36. One of following ores does not contain fluorine a. Fluorspar b. Cryolite c. Apatite d. Carnallite 37. Electronic configuration of Fluorine is a. [ He ] 2S2 , 2P5 b. [ Ne ] 2S2 , 2P5 c. [ Kr ] 3S2 , 3P5 d. None of them 38. Hydrogen bonding is strongest among the molecules of a. H2O b. HF c. NH3 d. NaCl 39. Which one of the following halides has the greatest acid strength? a. HCl b. HBr c. HF d. Hl 40. All the oxides of Halogens are a. Basic in character b. Acidic in character c. Amphoteric in character d. All of them .
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