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Which of the following is not true? In a...

Which of the following is not true? In acidic medium `K_(2)Cr_(2)O_(7)` oxidises:

A

bromides to bromine

B

hydrogen sulphide to sulphuric acid

C

ferrous salts to ferric salts

D

iodides to iodine

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The correct Answer is:
B
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In Cr_(2)O_(7)^(2-) :

MODERN PUBLICATION-UNIT TEST 6 -Questions
  1. The coordination isomerism is exhibited by :

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  2. The number of unpaired electrons in outer orbital [Fe(H(2)O)(6)]^(3+) ...

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  3. Which of the following is not true? In acidic medium K(2)Cr(2)O(7) oxi...

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  4. In alkaline medium, KMnO(4) gets changed into :

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  5. Which of the following statement is not true?

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  6. Which of the following statement is not correct when a mixture of NaCl...

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  7. In the metallurgy of iron , when lime stone is added to the blast furn...

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  8. Which of the following ions has magnetic moment of 1.73 B.M. ?

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  9. Extraction of zinc from zinc blende is achieved by :

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  10. The formula of the complex, tris (ethylenediamine) cobalt (III) sulph...

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  11. which of the following has the smallest ionic radius ?

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  12. Which ion gives coloured solution ?

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  13. Which of the following is an acidic oxide ?

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  14. The number of hydrogen atoms attached to phsophorus atom in hypophosph...

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  15. Among the following molecules : (i) XeO(3)" "(ii) XeOF(4)" " (iii...

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  16. Which of the following is the most basic oxide?

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  17. Purest form of iron is :

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  18. Which one of the following orders is not in accordance with the proper...

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  19. The compound which gives off oxygen on moderate heating is :

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  20. Which of the following oxide is strongly acidic?

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