Home
Class 12
CHEMISTRY
Substantiate the following statements: i...

Substantiate the following statements: i Chloroform is stored' in dark coloured bottles filled to the neck. Ii Iodoform gives a precipitate with AgNO3 on heating while chloroform doesnot.

Text Solution

Verified by Experts

i. When chloroform is exposed to light and air, it is oxidised to poisonous carbonyl chioride. .2 CHCl_1+ O_2 rarr 2 COCl_2. .+2 HC.
Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    V PUBLICATION|Exercise QUESTION BANK|139 Videos
  • POLYMERS

    V PUBLICATION|Exercise QUESTION BANK|113 Videos

Similar Questions

Explore conceptually related problems

Chloroform is generally prepared from ethanol. Iodoform gives a precipitate with AgNO_3 solution while chloroform does not. Why ?

A and B are two isomeric complex com- i ' pounds. Both contain central Co(3+) Ion with coordination number 6 and 5 NH_3 ligands. They also contain Cl and SO_4 groups. A gives a white precipitate with barium chloride solution while B gives a white precipitate with AgNO_3 solution:- Give the IUPAC names of both A & B.

(-)2 - methylbutan- 1 - ol on heating with conc. HCl gives (+)1 - chloro - 2 - methylbutane by SN^(2) mechanism. Which of the following statement are correct i) reaction proceeds through retension of configuration at stereocentre ii) reaction proceeds through inversion of configuration at stereocentre iii) reaction proceeds directly through a transition state iv) reaction proceeds through carbocation intermediate

Which among the following statements is correct? (i) Glycerol on reaction with oxalic acid at 110°C (383 K) and followed by heating and hydrolysis gives formic acid and glycerol. (ii) Glycerol on reaction withoxalic acid at 230°C (503 K) and followed by heating gives allyl alcohol. (iii) Glycerol on oxidation with dil. HNO_3 gives a mixture of glyceric and tartronic acid, (iv) Glycerol on oxidation with conc. HNO_3 gives glyceric acid.

Consider the following statements and arrange in the order of true or false I) Group 2 elements are known as alkaline earth metal except Be II) Be has the highest standard reduction potential among group 2 members III) Mg burns with dazzling brilliance in air to give MgO and Mg (NO_(3))_(2) IV) Calcium and barium metals are used to remove air from vacuum tubes (1) TTTT (2) FFFF (3) TTFT (4) TFFT

Two bottles containing C_6 H_5 I and C_6 H_5 CH_2 I lost their original labels.They were labelled as A and B for testing A and B were separately taken in test tubes and boiled with Na OH solution. The solution in each tube was made acidic with dilute HNO_3 and some AgNO_3 solution was added .Substance B gave a yellow precipitate. Which of the following statements is true for this experiment : Addition of HNO_3 was unnecessary, A was C_6 H_5 I , A was C_6 H_5 CH_2 I , B was C_6 H_5 I

V PUBLICATION-HALOALKANES AND HALOARENES-QUESTION BANK
  1. What happens when i. n-butyl chloride is treated with alcoholic ' KOH'...

    Text Solution

    |

  2. Explain the chemistry behind the formation of acid rain?

    Text Solution

    |

  3. Substantiate the following statements: i Chloroform is stored' in dark...

    Text Solution

    |

  4. Compounds A and B are isomers with formula C2 H4 Cl2. On treatment w...

    Text Solution

    |

  5. Find true and false statements among the followingand make corrections...

    Text Solution

    |

  6. Match the items of Column A,B,C '(##VPUHSSCHEXIIC10E03006Q01##)'

    Text Solution

    |

  7. Substantiate the following. a. The use of freon as refrigerant is bann...

    Text Solution

    |

  8. Predict the major product of dehydrohalogenation of 4 - bromo -1 hexen...

    Text Solution

    |

  9. Out of the various possible isomer of C7 H7 C l containing a benzene ...

    Text Solution

    |

  10. p-Dichlorobenzene has higher melting point than those of o- and m -is...

    Text Solution

    |

  11. Haloarenes are insoluble in water but soluble in benzene.

    Text Solution

    |

  12. Explain why thionyl chloride method is preferred for preparing alkyl c...

    Text Solution

    |

  13. Give one chemical test to distinguish between C2 H5 Br and C6 H5 B...

    Text Solution

    |

  14. Arrange the following halides in the increasing order of SN^2 reactivi...

    Text Solution

    |

  15. Write the main product in the following reactions (a) ( CH3)2 CH- C...

    Text Solution

    |

  16. What happens when chlorine is passed through boiling toluene in the pr...

    Text Solution

    |

  17. What effect should the following resonance of vinyl chloride have on i...

    Text Solution

    |

  18. Arrange the following in order of their increasing reactivity in nucle...

    Text Solution

    |

  19. What is plane polarised light?

    Text Solution

    |

  20. What happens when iodoform is heated with silver powder?write chemical...

    Text Solution

    |