Home
Class 12
CHEMISTRY
A black compound of Mn reacts with a hal...

A black compound of Mn reacts with a halogen acid to form a greenish yellow gas. When `NH_(3)` reacts with excess of that gas, an unstable trihalide is obtained. The change of oxidation state of nitrogen in this process is -

A

`-3` to `+3`

B

`-3` to `0`

C

`-3` to `+5`

D

`0` to `-3`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise MULTIPLE CHOICE QUESTION|10 Videos

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise SHORT ANSWER TYPE|21 Videos

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise NEET|52 Videos

  • ORGANIC CHEMISTRY : BASIC PRINCIPLES AND TECHNIQUES

    CHHAYA PUBLICATION|Exercise WARM UP EXERICSE|132 Videos

  • POLYMERS

    CHHAYA PUBLICATION|Exercise SOVLED CBSE SCANNER|18 Videos

Similar Questions

Explore conceptually related problems

When KMnO_(4) reacts with KBr in alkaline medium and gives bromate ion, then oxidation state of Mn changes from +7 to-

30 g of CH_(3)MgBr reacts with excess of CH_(3)CH_(2)CH_(2)OH forming xg of a gas. What is the value of x?

Which one of the following compounds will be obtained when ethyl formate is allowed to react with excess of CH_(3)MgI and the resulting compound is hydrolysed-

A compound reacts withs excess nitric acid and ammonium molibdate to give a yellow prepcipitate and with AgN_(3) a red preciptate. The compound si -

The compound which is formed in excess when Cl_2 reacts with toluene in presence of FeCl_3 is -

When a mixture of K_(2)Cr_(2)O_(7) and NH_(4)Cl is heated , a colourless gas in evloved which is neither combustiible nor a supporter of combusion . However , Mg continued to burn in it. When the gas (A) is reacted with calcium carbide in it . When the gas (A) is reacted with calcium carbide in electric furnace , a solid (B) is obtained . (B) undergoes slow hydrolysis forming an insoluble compound (C) and the solution of the compound (D). (D) truns Nessle's reagent brown. Identify (A) to (D) . Write the reactions involved.

When an aromatic compound A (C_7H_8) is oxidised by alkaline KMnO_4 solution, an organic acid (B) is produced. When B is heated with sodalime, another organic compound (C ) is obtained .When C is allowed to react with CH_3Cl in the presence of anhydrous AlCl_3 ,the starting compound A is regenerated. Identify A,B and C.

When a compound A is heated, it produces a colourless gas and the residue obtained is dissolved in water to form the compound B. The compound C is formed when excess CO_2 is passed through aqueous solution of B. The compound C can be separated out in solid state from its solution. C in its solid state when heated forms the compound A. A is-

An organic compound A(C_2H_6O) reacts with sodium to form compound B and hydrogen gas. When heated with conc. H_2SO_4 at 413 K, A produces C(C_4H_(10)O) . C on reaction with conc. HI at 373 K forms D. C is also obtained when B is heated with D. Identify A, B, C and D and write chemical equations for the formation of B from A and the formation of C from B and D.

When a brown compound of manganese (A) is treated with HCl it gives a gas (B). The gas taken in excess, reacts with NH_(3) to give an explosive compound (C ). Identify compounds A, B and C.

CHHAYA PUBLICATION-P-BLOCK ELEMENTS-SOLVED NCERT EXMPLAR PROBLEMS
  1. A gas is evolved when white phosphours is heated with concentrated N...

    Text Solution

    |

  2. Which one of the following acids form 3 types of salts -

    Text Solution

    |

  3. The strong reducing property of H(3)PO(2) is due to -

    Text Solution

    |

  4. When lead nitrate is heated , oxides fo nitrogen and lead are ob...

    Text Solution

    |

  5. Which one of the following elements does not exhibits allotrophy ...

    Text Solution

    |

  6. The highest covlency of nitrogen is -

    Text Solution

    |

  7. Which of the following statements is not correct -

    Text Solution

    |

  8. The substance responsible for the appearance of a brown ring in the r...

    Text Solution

    |

  9. The elements of group-15 form compounds In +5 oxidation state. However...

    Text Solution

    |

  10. The substances obtained on heating ammonium dichromate and barium azid...

    Text Solution

    |

  11. In the manufacture of HNO(3) NO is prepared by the catalytic oxidat...

    Text Solution

    |

  12. The oxidation number of the central atom of the anion of the compound...

    Text Solution

    |

  13. Which one of the following is not tetrahedral In shape -

    Text Solution

    |

  14. Which one of the following is a peroxoacld of sulphur -

    Text Solution

    |

  15. Hot and concentrated H(2)SO(4) is a strong oxidising agent. It oxidise...

    Text Solution

    |

  16. A black compound of Mn reacts with a halogen acid to form a greenish ...

    Text Solution

    |

  17. Preparation of xenon compounds by Neil Bartlett ls based on the compou...

    Text Solution

    |

  18. In the solid state, PCl(5) is -

    Text Solution

    |

  19. Reduction potential values of some Ions are given below. Arrange them ...

    Text Solution

    |

  20. Which one of the following pair ls isoelectronic -

    Text Solution

    |