Home
Class 11
CHEMISTRY
Hydrazine does not give Lassaigne's test...

Hydrazine does not give Lassaigne's test for nitrogen. Why ?

Text Solution

Verified by Experts

Hydrazine `(NH_(2)-NH_(2))` does not contain any carbon. Therefore, upon fusing with sodium metal, it does not form any sodium cyanide `(NaCN)` which is the primary requirement for the Lassaigne's test.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ORGANIC CHEMISTRY - SOME BASIC PRINCIPLES & TECHNIOUES

    DINESH PUBLICATION|Exercise VALUE BASED QUESTION|3 Videos

  • ORGANIC CHEMISTRY - SOME BASIC PRINCIPLES & TECHNIOUES

    DINESH PUBLICATION|Exercise Problems For Practice|39 Videos

  • ORGANIC CHEMISTRY - SOME BASIC PRINCIPLES & TECHNIOUES

    DINESH PUBLICATION|Exercise SHORT ANSWER TYPE QUESTION|33 Videos

  • NUCLEAR AND RADIO CHEMISTRY

    DINESH PUBLICATION|Exercise Evaluate Yourself|45 Videos

  • P BLOCK ELEMENTS (GROUP 13 AND 14 )

    DINESH PUBLICATION|Exercise Straight obj.|17 Videos

Similar Questions

Explore conceptually related problems

Will sodium cyanide give a positive Lassaigne's test for nitrogen ?

Will NaCN give a positive Lassaigne's test for nitrogen ?

Knowledge Check

  • (A) Hydrazine contains nitrogen but does nto give Lassaigne's test for nitrogen. (R) Hydrazine reacts with fused sodium to give H_(2) gas.

    A
    If both assertion and reason are correct and reason is the correct explanation of the assertion
    B
    If both assertion and reason are correct but reason is not the correct explanation of the assertion
    C
    If assertion is correct but reason is incorrect
    D
    If assertion is incorrect but reason is correct

  • Assertion (A) Hydrazine contains nitrogen but does not give Lassaigne’s test for nitrogen. Reason (R ) Hydrazine reacts with acetone to form corresponding aldimine.

    A
    Both A and R are true and R is the correct explanation of A
    B
    Both A and R are true but R is not a correct explation of A
    C
    A is true but R is false
    D
    A is false but R is true

  • Which of the following compounds will not give Lassaigne's test for nitrogen ?

    A
    `NH_(2)NH_(2)`
    B
    `C_(6)H_(5)NHNH_(2)`
    C
    phN=Nph
    D
    `NH_(2)CONH_(2)`

    • Similar Questions

    Explore conceptually related problems

    Which of the following compounds will not give Lassaigne's test for nitrogen ?

    Assertion : Hydrazine contains nitrogen but does not give Lassaigne's test for hydrogen. Reason : Hydrazine reacts with fused sodium to give H_(2) gas.

    Which of the following compounds does not show Lassaigne's test for nitrogen

    Which compound does not give positive test in Lassaigne's test for nitrogen ?

    During the detection of elements by Lassaigne's test, the covalent compounds are converted into ionic compounds by fusion with metallic sodium. The nitrogen, sulphur and halogens present in the organic compound are converted into cyanides, sulphides and halides respectively which are then detected by their usual tests. Which of the following will give blood red colour while doing Lassaigne's test for nitrogens ?

    Home
    Profile