Home
Class 12
CHEMISTRY
Dry SO(2) does not bleach dry flowers be...

Dry `SO_(2)` does not bleach dry flowers because

Text Solution

Verified by Experts

`SO_2` bleaches by reduction. In absence of moisture, nascent hydrogen required for bleaching is not produced.
Promotional Banner

Topper's Solved these Questions

  • P-BLOCK ELEMENTS

    ICSE|Exercise EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(SHORT ANSWER QUESTIONS)|67 Videos

  • P-BLOCK ELEMENTS

    ICSE|Exercise EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(LONG ANSWER QUESTIONS)|65 Videos

  • P-BLOCK ELEMENTS

    ICSE|Exercise EXERCISE (PART-I)(MATCH THE FOLLOWING)|1 Videos

  • ORGANIC COMPOUNDS CONTAINING NITROGEN

    ICSE|Exercise ISC EXAMINATION QUESTIONS ( PART-II DESCRIPTIVE QUESTIONS)|33 Videos

  • POLYMERS

    ICSE|Exercise ISC EXAMINATION QUESTIONS |10 Videos

Similar Questions

Explore conceptually related problems

Explain the following: (a) Dry chlorine does not bleach clothes. (b) Fluorine does not form F_(3)^(Ө) (polyhalide) ion. (c ) HF is least volatile and HCl is most volatile amongst hydrogen halides.

H_(2)O_(2) acts as a bleaching agent because of

Explain the following with proper reason: (i) Bleaching of flowers by chlorine is permanent while after bleaching with SO_2 , the colour returns. (ii) Iodine dissolves more in KI solution than in water.

Fleshy and dry fruit

Dry seeds have a

What is known to be dry ice?

All given are dry furits, except

Grignard reactions generally occur in dry ether because

Give reason why? Conc. H_(2)SO_(4) is not a drying agent for H_(2)S?

ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. What happens when SO2 reacts with Cl2 : (i) in presence of sunlight....

    Text Solution

    |

  2. SO2 acts as a bleaching agent. How?

    Text Solution

    |

  3. Dry SO(2) does not bleach dry flowers because

    Text Solution

    |

  4. Why does SO2 exhibit bleaching action only in presence of water?

    Text Solution

    |

  5. What happens when H2S reacts with SO2 ?

    Text Solution

    |

  6. What happens when SO2 is passed through caustic soda solution ?

    Text Solution

    |

  7. What is the bond angle in SO2 ?

    Text Solution

    |

  8. State the name of anhydride of H2SO4.

    Text Solution

    |

  9. Why sulfuric acid is described as king of chemicals ?

    Text Solution

    |

  10. Why sulfuric acid is also known as oil of vitriol?

    Text Solution

    |

  11. Why the process of manufacture of H2SO4 is named contact process ?

    Text Solution

    |

  12. In the the manufacture of sulphuric acid by the Contact process ,give ...

    Text Solution

    |

  13. Why vanadium pentoxide is considered as a better catalyst than platini...

    Text Solution

    |

  14. Why heating of catalyst is discontinued the moment the oxidation of su...

    Text Solution

    |

  15. Explain the following giving suitable reasons: In the manufacture of H...

    Text Solution

    |

  16. Sulfuric acid having concentration greater than 98.5% H2SO4 cannot be...

    Text Solution

    |

  17. Why conc. H2SO4 is stored in air tight bottles ?

    Text Solution

    |

  18. What happens when ferrous sulfide is treated with dil. H2SO4 ?

    Text Solution

    |

  19. What is the action of conc. H2SO4 on sulfur?

    Text Solution

    |

  20. Which gas is produced when common salt reacts with conc. H2 SO4 ?

    Text Solution

    |