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Which of the following metal Fe, Zn, Pb,...

Which of the following metal Fe, Zn, Pb, Ag and Pt do not give a metal nitrate on treatment with concentrated `HNO_3`?

A

Fe and zn

B

Fe and Pt

C

Pb , Ag and Pt

D

Fe,Zn and Pt.

Text Solution

Verified by Experts

The correct Answer is:
B
When iron is treated with Conc. `HNO_(3)`, it becomes passive due to the formation of a protective layer of `FeOFe_(2)O_(3)` on its surface Pt on the other hand, being a noble metal does not react with conc. `HNO_(3)`.
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DINESH PUBLICATION-THE NITROGEN FAMILY-Revision question
  1. Which of the following is not hydrolysed

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  2. Which statement is wrong for NO?

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  3. Which of the following metal Fe, Zn, Pb, Ag and Pt do not give a metal...

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  4. Which of the following oxides of nitrogen is thermally most stable

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  5. Correct formula of the complex formed in the brown ring test for nitra...

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  6. The decreasing order of the boiling points of the following hydrides ...

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  7. The gases produced in the reaction Pb (NO3)2 overset(Delta) to and N...

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  8. Nitrogen forms a variety of compounds in all oxidation states ranging ...

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  9. Which of the following form acidic halides

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  10. Chlorine reacts with excess of ammonia to form.

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  11. The correct formula of salt formed by the neutralization hypophosphoru...

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  12. Reaction of HNO(3) with C,P,S and I respectively give

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  13. Excess of PCl5 reacts with conc. H2 SO4 gives

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  14. The incorrect statements among the following is/are (I) NCl5 does no...

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  15. Cl-P-Cl bond angles in PCl5 molecule are

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  16. Nitrate is confirmed by ring test. The brown colour of the ring is du...

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  17. The correct order of the acidic nature of oxides is in the order

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  18. The reaction P4 + 3 NaOH + 3 H2 O rarr 3 NaH2 PO + PH3 is an exampl...

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  19. The reaction of P with X leads selectively to P4 O6. X is

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  20. Atoms in P4 molecule of white phosphorus are arranged regularly in the...

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