Home
Class 12
CHEMISTRY
Assertion:- The colour of old lead paint...

Assertion:- The colour of old lead paintings can be restored by washing with dilute solution of `H_(2)O_(2)`
Reason:- Black lead sulphide is oxidised by `H_(2)O_(2)` to white lead sulphate.

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are False.

Text Solution

Verified by Experts

The correct Answer is:
A
Old oil paintings contain PbO which becomes black due to formation of PbS.
`underset("black")(PbS)+4H_(2)Orarrunderset("white")(PbSO_(4))`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Assertion:- The colour of old lead paintings can be retored by washing with dilute solution of H_(2)O_(2) Reason:- Black lead sulphide is oxidised by H_(2)O_(2) to white lead sulphate.

Assertion (A) : The colour of old lead painting can be restored by washing with dilute solution of H_2O_2 . Reason (R) : Black lead sulphide is oxidised by H_2O_2 to white lead suphate.

Old lead paintings are generally washed with dilute solution of H_(2)O_(2) in order to regain their colour. Why?

ALLEN-HYDROGEN-EXERCISE-5
  1. Assertion : Cu react with HCl & form H(2) gas Reason : Cu above then...

    Text Solution

    |

  2. Assertion (A) Decomposition of H(2)O(2) is a disproportionation reacti...

    Text Solution

    |

  3. Assertion (A) Hydrogen combines with order elements by losing, gaining...

    Text Solution

    |

  4. Assertion (A) H(2)O(2) is not stored in glass bottles. Reason (R ) ...

    Text Solution

    |

  5. Assertion : Ferricyanide ion oxidises H(2)O(2) to H(2)O. Reason : Ox...

    Text Solution

    |

  6. Assertion:- The colour of old lead paintings can be restored by washin...

    Text Solution

    |

  7. Assertion : Water has a boiling point higher than that of H(2)S. Rea...

    Text Solution

    |

  8. Assertion : H(2)O(2) react with PbS to form PbSO(4). Reason : H(2)O(...

    Text Solution

    |

  9. Assertion : Molar mass of D(2)O is more than than of protium oxide. ...

    Text Solution

    |

  10. Assertion (A) The O-O bond length in H(2)O(2) is shorter than that in ...

    Text Solution

    |

  11. Asseriton : Hard Water is not fit for washing clothes. Reason : It c...

    Text Solution

    |

  12. Assertion : Reducing power of Nascent hydrogen much greater then simpl...

    Text Solution

    |

  13. Assertion : Rate of reaction CD(4)+Cl(2)rarr" Slow "CH(4)+C...

    Text Solution

    |

  14. Assertion : Hydrogen cannot be prepared in laboratory. Reason : Hydr...

    Text Solution

    |

  15. Assertion : Ortho and Para dihydrogen are nuclear spin isomers. Reas...

    Text Solution

    |

  16. Assertion : Saline hydrides are non volatile, non conducting & crystal...

    Text Solution

    |

  17. Assertion : Temporory hardness can be removed by boiling. Reason : O...

    Text Solution

    |

  18. Assertion : Sulphur is oxidised by H(2)O(2) in presence of Fe(III) R...

    Text Solution

    |