Free NEET Chemistry multiple-choice questions on Halogen Family (Group 17). Attempt each question and reveal the answer with a full explanation.
Which among the following is the strongest oxidising agent? F 2 Cl 2 Br 2 I 2 Which of the following is the correct order of hydration enthalpy of halide ions? F - > Cl - > Br - > I - I - > Br - > Cl - > F - F - > Br - > Cl - > I - Cl - > F - > Br - > I - The ozone layer in the upper atmosphere is destroyed by the reaction with: Nitrogen oxides and Freons Carbon dioxide Sulfur dioxide Hydrogen gas The correct order of increasing oxidising power of the following species is: I 2 < Br 2 < Cl 2 < F 2 F 2 < Cl 2 < Br 2 < I 2 Cl 2 < F 2 < I 2 < Br 2 Br 2 < I 2 < Cl 2 < F 2 Oxygen Difluoride ( OF 2 ) is a compound where the oxidation state of Oxygen is: +2 -2 -1 0 Among the hydrides of halogens ( HX ), the strongest reducing agent is: HI HBr HCl HF The solubility of Iodine ( I 2 ) in water is low, but it increases significantly in the presence of Potassium Iodide ( KI ) due to the formation of: I 3 - ion I + ion KIO 3 salt HI acid The correct order of electron gain enthalpy (with negative sign) for halogens is: Cl > F > Br > I F > Cl > Br > I Cl > Br > F > I I > Br > Cl > F The geometry of IF 7 is: Pentagonal bipyramidal Octahedral Square pyramidal Trigonal bipyramidal Which of the following is the correct order of increasing acidic strength? HClO < HClO 2 < HClO 3 < HClO 4 HClO 4 < HClO 3 < HClO 2 < HClO HClO 3 < HClO 4 < HClO 2 < HClO HClO 2 < HClO < HClO 3 < HClO 4 The catalyst used in the Deacon's process for the manufacture of Chlorine is: CuCl 2 V 2O 5 Fe Pt Which of the following is the strongest acid? HClO 4 HClO 3 HClO 2 HClO Which of the following statements is true for the reaction of F 2 with water? It oxidizes water to O 2 or O 3 It reduces water to H 2 It forms HF and HOF only No reaction occurs ICl is more reactive than I 2 because: I-Cl bond is weaker than I-I bond I-Cl bond is stronger than I-I bond ICl is a polar molecule I-Cl bond is more ionic Which of the following is the correct order of bond dissociation enthalpy for the halogens? Cl 2 > Br 2 > F 2 > I 2 F 2 > Cl 2 > Br 2 > I 2 Cl 2 > F 2 > Br 2 > I 2 Br 2 > Cl 2 > F 2 > I 2 When Chlorine reacts with hot and concentrated Sodium hydroxide ( NaOH ), the oxidation states of Chlorine in the products are: -1 and +5 -1 and +1 +1 and +5 -1 and +3 The shape of Chlorine trifluoride ( ClF 3 ) is: T-shaped Trigonal planar Trigonal bipyramidal Bent The geometry of Bromine pentafluoride ( BrF 5 ) is: Square pyramidal Trigonal bipyramidal Octahedral Pentagonal planar Which of the following noble gas species is isostructural with ICl 4 - ? XeF 4 XeF 2 XeO 3 XeO 4 When HI is treated with concentrated H 2SO 4 , it reduces it to: SO 2 S H 2S H 2SO 3 When Chlorine reacts with water, the products are: HCl + HOCl HCl + ClO 2 HCl + O 2 HOCl + H 2 Which of the following halides of Lead is not known to exist? PbI 4 PbCl 4 PbF 4 PbBr 4 Aqua Regia is a mixture of concentrated HCl and concentrated HNO 3 in the ratio of: 3:1 1:3 2:1 1:1 Which of the following interhalogen compounds is used for the enrichment of Uranium-235? ClF 3 IF 7 ICl BrF 3 The correct order of increasing acidic strength of the oxoacids of Chlorine is: HClO < HClO 2 < HClO 3 < HClO 4 HClO 4 < HClO 3 < HClO 2 < HClO HClO 3 < HClO 4 < HClO 2 < HClO HClO 4 < HClO 2 < HClO 3 < HClO When Copper reacts with concentrated Nitric acid ( HNO 3 ), the gas evolved is: NO 2 NO N 2O H 2 The structure of interhalogen compounds of the type XX' 3 (e.g., ClF 3 ) is: Bent T-shape Trigonal planar Trigonal pyramidal T-shape In the quantitative estimation of Ozone ( O 3 ), the gas is reacted with excess KI solution buffered with a borate buffer. The liberated I 2 is titrated against: Sodium thiosulfate Potassium permanganate Sodium hydroxide Oxalic acid Which of the following interhalogen compounds is the strongest fluorinating agent used in the processing of nuclear fuel? ClF 3 ICl BrF 3 IF 5 Which statement is true regarding the reactivity of interhalogens ( XX' ) compared to the parent halogens ( X 2 )? XX' is generally more reactive than X 2 (except F 2 ) XX' is generally less reactive than X 2 Both have equal reactivity XX' reacts only with noble gases Which of the following is used in photography to 'fix' the image by dissolving the unreacted Silver Bromide? Sodium thiosulfate ( Na 2S 2O 3 ) Sodium sulfate ( Na 2SO 4 ) Sodium sulfite ( Na 2SO 3 ) Sodium sulfide ( Na 2S ) The interhalogen compound IF 5 has a square pyramidal geometry. How many lone pairs of electrons are present on the central Iodine atom? 1 2 3 0 Chlorine water, on standing, loses its yellow color and becomes acidic. This is due to the formation of: HCl and HOCl HCl and O 2 HClO 2 and HCl Cl 2O and H 2O The bleaching action of Chlorine is due to: Oxidation Reduction Hydrogenation Dehydration Bleaching powder ( CaOCl 2 ) loses its power on long standing because: It changes into CaCl 2 and Ca(ClO 3) 2 It absorbs moisture It releases O 2 It changes into CaCO 3 Hydrolysis of NCl 3 gives: NH 3 and HOCl NH 3 and HCl HNO 3 and HCl N 2 and HCl Chlorine dioxide ( ClO 2 ) is an odd-electron molecule but it does not dimerize because: The odd electron is delocalized over the molecule It is a gas at room temperature Chlorine cannot expand its octet Oxygen is more electronegative than Chlorine Reaction of F 2 with cold and dilute NaOH yields: OF 2 O 2 O 3 NaF When Iodine reacts with hot and concentrated Nitric acid ( HNO 3 ), the product formed is: HIO 3 HI I 2O 5 HIO 4 Which of the following halogens has the lowest bond dissociation enthalpy? I 2 Cl 2 Br 2 F 2 The composition of Bleaching powder is represented as: Ca(OCl) 2 CaCl 2 Ca(OH) 2 2H 2O CaOCl 2 H 2O Ca(OCl) 2 Ca(OH) 2 CaCl 2 Ca(OH) 2 Which of the following is the most appropriate reason why F 2 is a stronger oxidizing agent than Cl 2 , even though Cl 2 has a more negative electron gain enthalpy? Low bond dissociation enthalpy of F-F and high hydration enthalpy of F - High electronegativity of Fluorine Smaller size of the Fluorine atom Availability of d-orbitals in Chlorine Given below are two statements : Statement-I : Heating NaCl with concentrated H2SO4 and MnO2 results in oxidation of Mn. Statement-II : Heating NaI with concentrated H2SO4 and MnO2 results in reduction of Mn. In light of the above statements, choose the most appropriate answer from the options given below. Both Statement-I and Statement-II are correct Both Statement-I and Statement-II are incorrect Statement-I is correct but Statement-II is incorrect Statement-I is incorrect but Statement-II is correct When Chlorine gas is passed over dry slaked lime ( Ca(OH) 2 ), the main product formed is: CaOCl 2 CaCl 2 Ca(ClO 3) 2 CaO What is the correct order of the hydration enthalpy of halide ions? F - > Cl - > Br - > I - I - > Br - > Cl - > F - Cl - > F - > Br - > I - F - > I - > Br - > Cl - In the Perchloric acid ( HClO 4 ) molecule, the central Chlorine atom undergoes which type of hybridization? sp 3 sp 2 sp 3d sp Bromine is prepared commercially from sea water (containing Br - ) by the displacement reaction with: Chlorine gas ( Cl 2 ) Fluorine gas ( F 2 ) Concentrated H 2SO 4 Potassium permanganate The number of lone pairs on the central Chlorine atom in ClF 3 is: 2 1 3 0