InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Strongest reducing agent of the following isA. `H_(2)O`B. `H_(2)S`C. `H_(2)Se`D. `H_(2)Te` |
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Answer» Correct Answer - D |
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| 2. |
Which of the following order represents correctly according to the property given?A. `H_(2)O ltH_(2)S ltH_(2)Se ltH_(2)Te` order of acidic strengthB. `H_(2)O gt H_(2)S gt H_(2)Se gt H_(2)Te` : polarity of the moleculeC. `H_(2)O gt H_(2)S gt H_(2)Te` : reducing natureD. `H_(2)O gt H_(2)S gt H_(2)Se gt H_(2)Te` : thermal stability |
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Answer» Correct Answer - A::B::D |
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| 3. |
Gas X and Gas Y in solution state react to give a turns substance Z. X has unpleasant odour and turns lead acetate paper black. In the first reaction X is oxidised and Y is reduced. Y on further oxidation with `O_(3)` gives a compound W X and Y are:A. `SO_(2) and SO_(3)`B. `H_(2)S and SO_(2)`C. `CO_(2) and SO_(2)`D. `SO_(2) and O_(3)` |
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Answer» Correct Answer - B |
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| 4. |
Which of the following turns lead acetate paper black?A. `SO_(2)`B. `SO_(3)`C. `H_(2)S`D. `H_(2)SO_(4)` |
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Answer» Correct Answer - C |
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| 5. |
Gas X and Gas Y in solution state react to give a turns substance Z. X has unpleasant odour and turns lead acetate paper black. In the first reaction X is oxidised and Y is reduced. Y on further oxidation with `O_(3)` gives a compound W In which of the following reactions also the above turbidity (Z) is seenA. `K_(2)Cr_(2)O_(7)+Na_(2)SO_(3) overset"acidic medium"rarr`B. `Na_(2)S_(2)O_(3)+Cl_(2)+H_(2)Orarr`C. `SCl_(4)+H_(2)Orarr`D. `SO_(2)+H_(2)O_(2)rarr` |
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Answer» Correct Answer - B |
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| 6. |
`SO_(2)` is a strong reducing agent however it also act as an oxidising agent Which of the following reactions shows its oxidising nature ?A. Bleaching flower petalsB. Decolourising acidified `KMnO_(4)` solutionC. Reaction with `H_(2)S` to give colloidal sulphurD. Turning acidified dichromate paper green |
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Answer» Correct Answer - C |
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| 7. |
How many of the following species can act as both bleaching agent and reducing agent `O_(3),H_(2)O_(2),SO_(2),HCl,SO_(3)` |
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Answer» Correct Answer - C |
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| 8. |
When an inorganic compound reacts with `SO_2` in aqueous medium produces `(A). (A)` on reaction with `Na_2 CO_3` gives the compound `(B)` which with sulphur gives a substance `(c)` used in photography. The compound `(c)` is.A. `Na_(2)S_(2)O_(3)`B. `Na_(2)SO_(4)`C. `Na_(2)S`D. `Na_(2)SO_(3)` |
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Answer» Correct Answer - A |
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| 9. |
Asserarion:Bleaching action action of `SO_(2)` is temporary and by reduction. Reason: The colour of material is regained due to oxidation by air.A. Statement-I and Statement-II are correct and Statement-II is correct explanation of Statement-IB. Statement-I and Statement-II are correct and Statement-II is not correct explanation of Statement-IC. Statement-I is correct and Statement-II is not correctD. Statement-I is not correct and Statement-II is correct |
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Answer» Correct Answer - B |
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| 10. |
`SO_(2)` gas used as a bleaching agent. Its bleaching action is :A. temporary and due to its oxidising natureB. temporary and due to its reducing natureC. permanent and due to its oxidising natureD. permenent and due to its reducing nature |
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Answer» Correct Answer - B |
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| 11. |
Assertion : Dry `SO_(2)` does not bleach dry flowers Reason: The bleaching action of `SO_(2)` is due to its readucing natureA. Statement-I and Statement-II are correct and Statement-II is correct explanation of Statement-IB. Statement-I and Statement-II are correct and Statement-II is not correct explanation of Statement-IC. Statement-I is correct and Statement-II is not correctD. Statement-I is not correct and Statement-II is correct |
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Answer» Correct Answer - B |
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| 12. |
Which reagent does not give oxygen as one of the product during oxidation with ozone?A. `SO_(2)`B. `SnCl_(2)//HCl`C. `H_(2)S`D. both 1 & 2 |
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Answer» Correct Answer - D |
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| 13. |
Which of the following are correct statementsA. `O_(3)` oxidises PbS to `PbSO_(4)`B. `O_(3)` oxidises nitric oxide to nitrogen dioxideC. Ozone oxidises aqueous KI at pH = `9.2`D. The two O - O bond lengths in ozone are different |
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Answer» Correct Answer - A::B::C |
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| 14. |
Select the correct statements about `Na_(2)S_(2)O_(3).5H_(2)O` :A. It is also called as hypoB. It is used in photography to from complex with AgBrC. It can be used as antichlorD. All of the above |
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Answer» Correct Answer - D |
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| 15. |
Chemically inert halide of sulphur isA. `S_(2)Cl_(2)`B. `SF_(4)`C. `SCl_(2)`D. `SF_(6)` |
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Answer» Correct Answer - D |
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| 16. |
`Na_(2)S_(2)O_(3)` is oxidised by `I_(2)` toA. `Na_(2)S`B. `Na_(2)SO_(4)`C. `NaHSO_(3)`D. `Na_(2)S_(4)O_(6)` |
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Answer» Correct Answer - D |
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| 17. |
The primary standard solution for estimation of `Na_(2)S_(2)O_(3)` isA. `I_(2)` solutionB. `KMnO_(4)`C. `K_(2)Cr_(2)O_(7)`D. oxalic acid |
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Answer» Correct Answer - A |
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| 18. |
Select the correct statements about `Na_(2)S_(2)O_(3).5H_(2)O` :A. It is also called as hypoB. It is used in photography to from complex with AgBrC. It can be used as antichlorD. It is used to remove stains of `I_(2)` |
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Answer» Correct Answer - A::B::C::D |
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| 19. |
An inorganic halide `(A)` reacts with water to form two acids `(B)` and `(c). (A)` also reacts with `NaOH` to form two salts `(D)` and `( E)` which remain in solution. The solution gives white precipitate with both `AgNO_3` and `BaCl_2` solutions respectively. `(A)` is a useful organic reagent. Identify `(A)` to `( E)`.A. `SO_(2)C1_(2)`B. `SF_(6)`C. `SeF_(6)`D. `SF_(4)` |
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Answer» Correct Answer - A |
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| 20. |
Moist iodine reacts with ozone to form.A. HIB. `HIO_(3)`C. `I_(2)O_(3)`D. `I_(2)O_(7)` |
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Answer» Correct Answer - B |
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| 21. |
Aqueous solution of `Na_(2)S_(2)O_(3)` on reaction with `CI_(2)`, givesA. `Na_(2)S_(4)O_(6)`B. `NaHSO_(4)`C. NaClD. NaOH |
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Answer» Correct Answer - B |
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| 22. |
An inorganic compound X reacts with water to form two cid Y and Z. X also reacts with NaOH to form two salts B and C which remain in solution. The solutions gives white precipitate with both `AgNO_(3)` and `BaSO_(4)` solutions. What is XA. `SO_(2)Cl_(2)`B. `AlCl_(3)`C. `SbCl_(3)`D. `PCl_(3)F_(2)` |
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Answer» Correct Answer - A |
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| 23. |
Which one of the following does not give tetrathionate as the product, when treated with an aq solution of hypo?A. `C1_(2)`B. `I_(2)`C. `CuC1_(2)`D. `FeC1_(3)` |
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Answer» Correct Answer - A |
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| 24. |
A small iodine crystal is added to each of the following aq solutions: I. sodium sulphate II. Sodiumthiosulphate III. Sodium tetrathionate IV. Sulphuric acid In which solutions the purple colour disappersA. only in IB. only in I and IIC. only in III and IVD. only in II |
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Answer» Correct Answer - D |
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| 25. |
Which one of the following is/are suboxides?A. `CrO_(5)`B. `PbO_(2)`C. `KO_(2)`D. `C_(3)O_(2)` |
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Answer» Correct Answer - D |
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| 26. |
Asseration: Cyclic trimer of `SO_(3)` possesses have six membered hetero-cyclic chains made up of `S` and `O`-atoms Reason: Cyclic trimer of `SO_(3)` is referred as `gamma-SO_(3)`. |
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Answer» Correct Answer - B |
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| 27. |
Sulphur forms hexahalides tetrahalides dihalides and monohalids Sulphur forms only exafluoride but not hexacholorides. Hexabromides and hexaiodes Sulphur halids tend to hydorlyse easily sulphur hexaflouride is an exception of the oxohalids the most important are those of sulphur especially sulphur dichloride oxide (Thoiny chloride) `SO_(2)Cl_(2)` and sulphur dichloride dioxide (sulphuryl chloride) `SO_(2)Cl_(2)` these also hydrolyse in water. Sulphuryl chloride is dissolved in water. which of the following statement is wrong about the solution.A. Give white ppt with barium chloride in soluble in any acidB. The solution contain two different types of acids a monobasic and a dibasic acidC. The solution can decolourize the permanganateD. The osication states of the elements is `SO_(2)Cl_(2)` do not change when dissolved in water |
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Answer» Correct Answer - C |
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| 28. |
Which of the following species has the same number of `X-O-X` linkages, where `X=S` or P? I. `S_(4)O_(6)^(2-)` II. `S_(3)O_(9)` III. `S_(2)O_(5)^(2-)` IV. `P_(3)O_(9)^(3-)`A. `II and III`B. `II and IV`C. `I and II`D. `I and IV` |
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Answer» Correct Answer - B |
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| 29. |
Which of the following acts only as reducing agentA. `KMnO_(4)`B. `CaOCl_(2)`C. `H_(2)S`D. `HNO_(2)` |
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Answer» Correct Answer - C |
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| 30. |
In which of the following ozone acts as reducing agent?A. `BaO_(2)+O_(3)rarrBaO+2O_(2)`B. `2HCl+O_(3)rarrCl_(2)+H_(2)O+O_(2)`C. `PbS+4O_(3)rarrPbSO_(4)+4O_(2)`D. `2KI+O_(3)+H_(2)Orarr2KOH+I_(2)+O_(2)` |
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Answer» Correct Answer - A |
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| 31. |
`O_(3)` does not give ozonide withA. 2-ButeneB. BenzeneC. 2-PentyneD. Neopentane |
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Answer» Correct Answer - D |
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| 32. |
When `SO_(2)` is passed through acidified solution of `H_(2)S`A. `H_(2)SO_(3)` is formedB. `H_(2)SO_(4)` is formedC. Sulphur is precipitatedD. `H_(2)SO_(5)` is formed |
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Answer» Correct Answer - C |
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| 33. |
Which of the following has no S-S bond.A. `H_(2)S_(2)O_(4)`B. `H_(2)S_(2)O_(5)`C. `H_(2)S_(2)O_(6)`D. `H_(2)S_(2)O_(7)` |
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Answer» Correct Answer - D |
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| 34. |
Number of hydroxyl groups present in hydorxyl groups present in pyrosulphuric acid isA. 3B. 4C. 2D. 1 |
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Answer» Correct Answer - C |
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| 35. |
Pyrosulphuric acid may be synthesised by dissolving `SO_(3)` inA. `H_(2)O`B. `H_(2)SO_(3)`C. `H_(2)SO_(4)`D. `H_(2)S_(2)O_(8)` |
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Answer» Correct Answer - C |
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| 36. |
Incorrect statement about `SF_(4)` isA. Seesaw StructureB. `Sp^(3)d` hybridizationC. One lone pairD. Sulphur is in second excited state |
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Answer» Correct Answer - D |
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| 37. |
Incorect match isA. `{:("1) "H_(2)S_(2)O_(7)," a) S-O-S linkage"):}`B. `{:("2) "H_(2)SO_(5)," b) O - O linkage"):}`C. `{:("3) "H_(2)S_(2)O_(3)," c) S = S linkage"):}`D. `{:("4) "H_(2)S_(x)O_(6)," d) S-O-S linkage"):}` |
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Answer» Correct Answer - D |
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| 38. |
Match the following: Column I(reaction) (a) `H_(2)O_(2)+underset("2moles")(ClSO_(3)H) rarr` (b)`SO_(3)+HClrarr` c) `SO_(3)+HBr rarr` (d) `underset(("conc"))(H_(2)SO_(4))+underset"(2moles)"(PCl_(5))rarr` Column II: P) Halogen is obtained q) `sp^(3)` hybridisation in any of the product molecules r) Marshalls acid s) Sulphuryl chloride t)Hydrogen halide is obtained as the product. |
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Answer» Correct Answer - A::B::C::D |
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| 39. |
The gases respectively absorbed by alkaline pyrogallon and oil of cinnamon is.A. `N_(2)O,O_(3)`B. `O_(2),O_(3)`C. `O_(3),CO`D. `SO_(2),CH_(4)` |
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Answer» Correct Answer - B |
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| 40. |
STATEMENT-1: The oxidation state of S in `H_(2)S_(2)O_(8)` is 6. STATEMENT-2: Maximum oxidation state of A is 6 because the maximum oxidation state of an element is equal to number of its valence electrons in it.A. Statement-I and Statement-II are correct and Statement-II is correct explanation of Statement-IB. Statement-I and Statement-II are correct and Statement-II is not correct explanation of Statement-IC. Statement-I is correct and Statement-II is not correctD. Statement-I is not correct and Statement-II is correct |
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Answer» Correct Answer - D |
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| 41. |
`"Orange solid"overset(Delta)rarrunderset(gas)"diamagnetic"+underset("residue")"green"` `underset("solid"(X_(2)))"Orange"overset(Delta)rarrunderset("magnetic(gas)")"para"+underset(("residue"))"green"+underset("(solid)")"yellow"` `X_(1)` and `X_(2)` are respectively:A. `Na_(2)Cr_(2)O_(7),K_(2)Cr_(2)O_(7)`B. `(NH_(4))_(2)Cr_(2)O_(7),Na_(2)Cr_(2)O_(7)`C. `K_(2)Cr_(2)O_(7),(NH_(4))_(2)Cr_(2)O_(7)`D. `(NH_(4))_(2)Cr_(2)O_(7),KNO_(3)` |
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Answer» Correct Answer - B |
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| 42. |
Which allotropic form of sulphur is most stable at room temperature?A. RhombicB. MonoclinicC. PlasticD. Colloidal |
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Answer» Correct Answer - A |
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| 43. |
Which of the following are peroxoacids of sulphur ?A. `H_(2)SO_(5)` and `H_(2)S_(2)O_(8)`B. `H_(2)SO_(s)` and `H_(2)S_(2)O_(7)`C. `H_(2)S_(2)O_(7)` and `H_(2)S_(2)O_(e)`D. `H_(2)S_(2)O_(e)` and `H_(2)S_(2)O_(7)` |
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Answer» Correct Answer - A |
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| 44. |
The element evoloving two different gases on reaction with conc. `H_(2)SO_(4)` is :A. PB. CC. HgD. S. |
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Answer» Correct Answer - B |
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| 45. |
Which one of the following is/are cannot be hydrolysed?A. `TeF_(6)`B. `SF_(6)`C. `NCl_(3)`D. `NF_(3)` |
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Answer» Correct Answer - B::D |
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| 46. |
Which of the following statements(s) is/are incorrect for `SF_(4)` molecule?A. It has a square planar shape with S- atom having two lone pairsB. All S-F bonds are equal in lengthC. It is hydrolysed by waterD. `H_(2)SO_(4)` is the final product during the hydrolysis of `SF_(4)` |
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Answer» Correct Answer - A::B::D |
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| 47. |
Which statements are correct for ozone?A. it is obtained by silent electric discharge on oxygenB. It can be obtained by the action of ultraviolet rays on oxygen (modified)C. It is regarded as an allotrope of oxygenD. Ozone molecule is paramagnetic like oxygen molecule. |
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Answer» Correct Answer - A::B::C |
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| 48. |
The order of increasing size of atomic radii among the elements O,S,Se and AsA. `AsltSltOltSe`B. `SeltSltAsltO`C. `OltSltAsltSe`D. `OltSltSeltAs` |
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Answer» Correct Answer - D |
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| 49. |
The products obtained on heating `LiNO_(3)` will beA. `LiNO_(2)+O_(2)`B. `Li_(2)O+NO_(2)+O_(2)`C. `Li_(3)N+O_(2)`D. `Li_(2)O+OH^(-)+O_(2)` |
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Answer» Correct Answer - B |
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| 50. |
Which of the following is worng statement?A. ONCl and `ONO^(-)` are not isoelectronicB. `O_(3)` molecule is linearC. Ozone is viotet - black in solid stateD. Ozone is diamagnetic gas |
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Answer» Correct Answer - B |
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