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A metal "M" reacts with nitrogen gas to ...

A metal "M" reacts with nitrogen gas to afford "`M_3N`". "`M_3N`" on heating at high temperature gives back "M" and on reaction with water produces gas "B". Gas "B" reacts with aqueous `CuSO_4` to form deep blue compound. "M" and "B" are respectively......

A

Na and `NH_3`

B

Li and `NH_3`

C

Ba and `N_2`

D

Al and `N_2`

Text Solution

Verified by Experts

The correct Answer is:
B
`6Li + N_(2) to 2L_(3)N overset(Delta)to 6Li + N_(2)`
`2Li_(3)N to 6LiOH + 2NH_(3) overset(Cu^(2+)) to underset("Deep blue")([Cu(NH_(3))_(4)]^(2+))`
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KUMAR PRAKASHAN-THE P-BLOCK ELEMENTS -SECTION-E (MULTIPLE CHOICE QUESTIONS (MCQS)) (MCQS ASKED IN JEE/NEET/AIEEE EXAM)
  1. Identify the incorrect statement :

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  2. The number of S = O and S - OH bonds present in peroxodisulphuric acid...

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  3. A metal "M" reacts with nitrogen gas to afford "M3N". "M3N" on heating...

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  4. In which pair of ions both the species contain S-S bond ?

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  5. Which of the following absorbs carbon dioxide and releases oxygen ?

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  6. The products obtained when chlorine gas reacts with cold and dilute aq...

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  7. Strong reducing behaviour of H3PO4 is due to..

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  8. The tendency to form monovalent compounds among the group 13 elements ...

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  9. Which of the following pair of species is not iso-structural ?

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  10. Xenon hexafluoride on partial hydrolysis produces compounds "X and Y" ...

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  11. Among the oxides of nitrogen : N2O, N2O4 and N2O5, the molecules havin...

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  12. The compounds that doesnot produce nitrogen gas by thermal decompositi...

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  13. Which of the following statements is not true for halogens ?

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  14. Iodine reacts with concentrated HNO3 to yeild Y along with other produ...

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  15. The pair that contains two P-H bonds in each of the oxoacids is .........

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  16. Match the Xenon compounds in Column-I with its structure in Column-II ...

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  17. Which is the correct thermal stability order for H2E (E = O, S, Se, Te...

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  18. The number of moles of hydrogen molecules required to produce 20 moles...

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  19. Match the following: Which of the following is the correct optio...

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  20. The electron gain enthalpy in kj/mol of F, CI, Br, and I respectively ...

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