Home
Class 12
CHEMISTRY
To an acidified dichromate solution, a p...

To an acidified dichromate solution, a pinch of `Na_(2)O_(2)` is added and shaken. What is observed ?

A

Blue colour

B

Orange colour changing to green directly

C

Copious evolution of oxygen

D

Bluish-green precipitate

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • 13-14 HYDROGEN & S-BLOCK ELEMENT

    VMC MODULES ENGLISH|Exercise Level 2 (Numerical value type )|14 Videos

  • 13-14 HYDROGEN & S-BLOCK ELEMENT

    VMC MODULES ENGLISH|Exercise JEE Main Archive|64 Videos

  • 13-14 HYDROGEN & S-BLOCK ELEMENT

    VMC MODULES ENGLISH|Exercise Level 1|74 Videos

  • ALCOHOLS, PHENOLS & ETHERS

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE - L|10 Videos

Similar Questions

Explore conceptually related problems

To an acidified dichromate solution, a pinch of Na_(2)O_(2) is added and shaken. Na_(2)Cr_(2)O_(7) +4Na_(2)O_(2)+5H_(2)SO_(4) to 2(A)+5(B)+5H_(2)O . Compound (A) is blue coloured The sum of the total number of atoms in one molecule of (A) and (B) is

Na_(2)S_(2)O_(3) is prepared by :

When SO_2 is passed into an acidified potassium dichromate solution, the oxidation numbers of sulphur and chromium in the final products respectively are :

When Na_(2)CO_(3) is added to an aqueous solution of CuSO_(4)

5.0 cm^(3) of H_(2)O_(2) liberates 0.508 g of iodine from an acidified KI solution. The strength of H_(2)O_(2) solution in terms of volume strenth at STP is

Acidified K_(2)Cr_(2)O_(7) solution turns green when Na_(2)SO_(3) is added to it. This is due to the formation of

What happens when silver nitrate solution is added to Na_(2)S_(2)O_(3) solution and then content is allowed to keep for a longer period?

(i) A white solid mixture of two salts containing a common cations in insoluble in water. It dissolves in dilute HCl producing some gases (with effervescence) that turn an acidified dichromate solution gren. After the gases are passed through the acidified dichromate solution, the emerging gas turns baryta water milky. (ii) On treatment with dilute HNO_(3) , the white solid gives a solution which does not directly give a precipitate with a BaCl_(2) solution but gives a white precipitate when warmed with H_(2)O_(2) and then treated with a BaCl_(2) solution. (iii) The solution of the mixture in dilute HCl, when treated with NH_(4)Cl,NH_(4)OH and an Na_(2)HPO_(4) solution, gives a white precipitate. Q. The white precipitate obtained in (iii) consists of:

(i) A white solid mixture of two salts containing a common cations in insoluble in water. It dissolves in dilute HCl producing some gases (with effervescence) that turn an acidified dichromate solution gren. After the gases are passed through the acidified dichromate solution, the emerging gas turns baryta water milky. (ii) On treatment with dilute HNO_(3) , the white solid gives a solution which does not directly give a precipitate with a BaCl_(2) solution but gives a white precipitate when warmed with H_(2)O_(2) and then treated with a BaCl_(2) solution. (iii) The solution of the mixture in dilute HCl, when treated with NH_(4)Cl,NH_(4)OH and an Na_(2)HPO_(4) solution, gives a white precipitate. Q. The gases evolved in (i) are:

(i) A white solid mixture of two salts containing a common cations in insoluble in water. It dissolves in dilute HCl producing some gases (with effervescence) that turn an acidified dichromate solution gren. After the gases are passed through the acidified dichromate solution, the emerging gas turns baryta water milky. (ii) On treatment with dilute HNO_(3) , the white solid gives a solution which does not directly give a precipitate with a BaCl_(2) solution but gives a white precipitate when warmed with H_(2)O_(2) and then treated with a BaCl_(2) solution. (iii) The solution of the mixture in dilute HCl, when treated with NH_(4)Cl,NH_(4)OH and an Na_(2)HPO_(4) solution, gives a white precipitate. Q. The white precipitate obtained in (ii) indicates the presence of a:

VMC MODULES ENGLISH-13-14 HYDROGEN & S-BLOCK ELEMENT-Level 2
  1. Which of the following statements regarding the oxides of alkali and a...

    Text Solution

    |

  2. Which of the following salts exist(s) as decahydrated crystals?

    Text Solution

    |

  3. To an acidified dichromate solution, a pinch of Na(2)O(2) is added and...

    Text Solution

    |

  4. A+H(2)Oto NaOH A underset(400^(@)C)overset(O(2))rarrBunderset(at25^(...

    Text Solution

    |

  5. In which of the following alloys Mg is not present ?

    Text Solution

    |

  6. CaCl(2) is preferred over NaCl for clearing ice on roads particularly ...

    Text Solution

    |

  7. Choose incorrect statement :

    Text Solution

    |

  8. Alkali metals burn in air to form oxides, peroxides and superoxides. L...

    Text Solution

    |

  9. Alkali metals burn in air to form oxides, peroxides and superoxides. L...

    Text Solution

    |

  10. Pure sodium oxide is formed by heating a mixture of :

    Text Solution

    |

  11. The correct formula of hydrolith is :

    Text Solution

    |

  12. MATCH THE COLUMN :

    Text Solution

    |

  13. Salt used for performing bead test in qualitative inorganic analysis i...

    Text Solution

    |

  14. Give the correct order of True (T) or False (F) for the following stat...

    Text Solution

    |

  15. Of the following statements only one is incorrect. The statement is :

    Text Solution

    |

  16. The volume strength of 10 NH(2)O(2) is :

    Text Solution

    |

  17. Give the correct order of initials T or F for following statements. Us...

    Text Solution

    |

  18. The wire of flash bulb is made of :

    Text Solution

    |

  19. Which of the following is pearl ash ?

    Text Solution

    |

  20. Industrially H(2)O(2) is obtained from :

    Text Solution

    |