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(A): lodine appears in violet colour. ...

(A): lodine appears in violet colour.
(R): Iodine absorbsviolet part of electro magnetic radiation .

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

Text Solution

Verified by Experts

The correct Answer is:
C
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Iodine is violet coloured. Why?

Dilute Iodine appears in_____colour.

(A) : lodine is the only halogen that is naturally available in positive oxidation states (R): Iodine is slightly electropositive among halogens .

(A) : Dipole oscillations produce electro­magnetic waves. (R) : Accelerated charge produces electro­magnetic waves.

AAKASH SERIES-VII GROUP ELEMENTS-OBJECTIVE EXERCISE -4
  1. (A) Aqueous fluoride on electrolysis at inertanode liberates oxygen ...

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

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

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

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

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

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

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

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  9. (A) Bond energy of Cl(2) is less than that of F(2) (R ) Bond energy ...

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  10. (A) Hydration energy of iodide is highest among halides (R ) Greater...

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  11. (A) Highest atomicity of an interhalogen compound is 8 (R ) Highest ...

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  12. (A) Fluoride is oxidised by managanese dioxide (R ) Manganese dioxid...

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  13. (A) Iodine is dissolved well in aqueous KI solution (R ) Iodine form...

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  14. (A) Compared to Br(2),Icl is more reactive (R ) Br(2) is non -polar ...

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  15. (A) Chlorine dioxide is paramagnetic (R ) Chlorine dioxide molecule...

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  16. (A) F-F bond is stronger than Cl -Cl bond (R ) Atomic size of F is l...

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  17. (A) Perhalate ions are tetrahedral in shape (R ) Halogens underdo sp...

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  18. (A) Iodine is least basic whereas fluorine is most basic , among halog...

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  19. F(2) shows disproportionation reactions (R ) F(2) is the weakest oxi...

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  20. (A) The bleaching of flowers by chlorine is permanent while that by SO...

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