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(A): Cl - O bond length decreases from C...

(A): `Cl - O` bond length decreases from `CIO^(-)` to `ClO_(4)^(-)`
(R): `CI-O` bond order increases from `CIO^(-)` to `CIO_(4)^(-)`. 

A

Both (A) and (R ) are true and (R ) is the correct explanation of (A)

B

Both (A) and (R ) are true and (R ) is not the correct explanation of (A)

C

(A) is true but (R ) is false

D

Both (A) and (R ) are false

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The correct Answer is:
A
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AAKASH SERIES-VII GROUP ELEMENTS-OBJECTIVE EXERCISE -4
  1. (A): Reaction given below is possible 2KCI + Br2 to Cl(2) + 2KBr (...

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  2. (A): Electron affinity of fluorine is lower than that of chlorine (R...

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  3. (A): Cl - O bond length decreases from CIO^(-) to ClO(4)^(-) (R): CI...

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  4. (A): Bromine does not displace chlorine from its salt solution (R): ...

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  5. (A) : lodine is the only halogen that is naturally available in positi...

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  6. (A) : Chlorine acts as a bleaching agent in the presence of moisture ...

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  7. (A): HBr is stronger acid than HI. (R) : Bromine is more electronega...

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  8. (A): Iodine displaces bromine from KBrO3 (R): Iodine is strong oxidi...

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  9. (A) OX^(-) on heating in the presence of OH^(-) gives X^(-)andXO(3)^(-...

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  10. (A) : Chlorine is gas, bromine is liquid and iodine is solid (R) : I...

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  11. (A): Hydrogen iodide is most stable among hydrogen halides (R): Iodi...

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  12. (A): Oxidation ability increases from HOCI to HCIO4 (R): Oxidation n...

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  13. (A) Aqueous fluoride on electrolysis at inertanode liberates oxygen ...

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  14. (A): Fluorine does not form oxyacids (R): Electronegativity of fluor...

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  15. (A): lodine appears in violet colour. (R): Iodine absorbsviolet part...

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  16. (A) :Among hydrogen halides, hydrogen fluoride is least volatile. (R...

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  17. (A) HClO is stronger acid than HBrO (R ) Greater is the electronegat...

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  18. (A) : Fluorine is the best oxidising agent (R ) SRP is highest for F...

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  19. OF^(-) does not exist , though HOF is known (R ) HOF molecule does n...

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  20. (A) Halogens are coloured (R ) Colour is a characristic property of ...

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