Home
Class 12
CHEMISTRY
A compound of Zinc which is white in col...

A compound of Zinc which is white in cold state and yellow in hot state, is

A

`ZnS`

B

`ZnO`

C

`ZnCl_2`

D

`ZnSO_4`

Text Solution

Verified by Experts

The correct Answer is:
B
ZnO when cold it is pure and when hot it becomes impure and this impurity changes ZnO white to yellow. This impurity is known as metal deficiency defect.
Promotional Banner

Topper's Solved these Questions

  • THE d-AND f- BLOCK ELEMENTS

    ERRORLESS|Exercise Past Years Questions |55 Videos

  • THE d-AND f- BLOCK ELEMENTS

    ERRORLESS|Exercise Assertion and Reason |11 Videos

  • THE d-AND f- BLOCK ELEMENTS

    ERRORLESS|Exercise Assertion and Reason |11 Videos

  • SURFACE CHEMISTRY

    ERRORLESS|Exercise ASSERTION AND REASON|14 Videos

  • THE P -BLOCK ELEMENTS (NITROGEN, OXYGEN, HALOGEN AND NOBLE FAMILY)

    ERRORLESS|Exercise ASSERTION & REASON|22 Videos

Similar Questions

Explore conceptually related problems

The compound which has ionic nature in solid state is

The compound in which Mn has oxidation state of +3 is

The compound in which oxidation state of metal is zero-

The compound, in which oxygen has oxidation state of +2, is

The compound in which nickel has the lower oxidation states is :

ERRORLESS-THE d-AND f- BLOCK ELEMENTS -NCERT BASED QUESTIONS (Compounds of Transitional Elements)
  1. AgCl dissolved in excess of NH(3), KCN and Na(2)S(2)O(3) solutions the...

    Text Solution

    |

  2. A copper coin is completely covered with a gold film and is placed in ...

    Text Solution

    |

  3. Name the reagent that is used in leaching of gold .

    Text Solution

    |

  4. A compound of Zinc which is white in cold state and yellow in hot stat...

    Text Solution

    |

  5. White vitriol is

    Text Solution

    |

  6. In the metallurgy of Zn the Zn dust obtained from roasting and reducti...

    Text Solution

    |

  7. Zinc when reacted with excess of NaOH gives

    Text Solution

    |

  8. Lucas reagent is ,

    Text Solution

    |

  9. Zinc reacts with hot and concetrated H(2)SO(4) to give

    Text Solution

    |

  10. Reduction of zinc with cold and very dilute nitric acid yields

    Text Solution

    |

  11. What happens when aluminium and zinc salts react with an excess of NaO...

    Text Solution

    |

  12. When calomel react with NH(4)OH solution the compound formed is

    Text Solution

    |

  13. The formula of corrosive sublimate is

    Text Solution

    |

  14. The main product obtained when a solution of sodium carbonate reacts w...

    Text Solution

    |

  15. The gas produced on heating MnO(2) with conc. HCl is -

    Text Solution

    |

  16. The number of moles of KMnO(4) required to oxidize one equivalent of K...

    Text Solution

    |

  17. The charge required for the reduction of 1 mole of Cr(2)O(7)^(2-) ions...

    Text Solution

    |

  18. In alkaline medium, the reaction of hydrogen peroxide with potassium p...

    Text Solution

    |

  19. The major product formed in the oxidation of acetylene with alkaline K...

    Text Solution

    |

  20. Upon heating with acidic KMnO4 an organic compound produces hexan – 1,...

    Text Solution

    |