Chemistry-
General
Easy
Question
Correct boiling point order for I to IV is
- I > II > III > IV
- IV > III > II > I
- II > IV > I > III
- IV > II > III > I
The correct answer is: IV > II > III > I
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The correct order of dipole moment is :
The correct order of dipole moment is :
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The increasing order of dipole moment of following compounds is :
The increasing order of dipole moment of following compounds is :
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Which will have highest dipole moment ?
Which will have highest dipole moment ?
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Arrange the following in decreasing order of dipole moments
Arrange the following in decreasing order of dipole moments
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Which will have higher dipole moment than
Which will have higher dipole moment than
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The correct orders about compounds I and II are:
The correct orders about compounds I and II are:
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Read the following graph and gives the answer for the following questions
Consider the following statements:
I) The transition elements (except the 12th group elements) are very much hard and have low volatility
II) Generally in a given series the melting points of the transition elements rises to a maximum and then fall as the atomic number increases
III) Transition metals have high thermal and electrical conductivity and metallic luster. Select the correct from the codes given
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I) The transition elements (except the 12th group elements) are very much hard and have low volatility
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Read the following graph and gives the answer for the following questions
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Read the following graph and gives the answer for the following questions
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S1 : Covalent and ionic radii of Nb and Ta are almost the same
S2 : Ionisation energies of transition elements decrease with increase in atomic number in a given group
S3 : Iodide of Millon's base is believed to have the structure
S4 : Yellow colour of is due to d-d transition
S1 : Covalent and ionic radii of Nb and Ta are almost the same
S2 : Ionisation energies of transition elements decrease with increase in atomic number in a given group
S3 : Iodide of Millon's base is believed to have the structure
S4 : Yellow colour of is due to d-d transition
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What is the final product (B) of this sequence :
What is the final product (B) of this sequence :
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Consider the following sequence of reactions
The products (A) and (B) are, respectively,
Consider the following sequence of reactions
The products (A) and (B) are, respectively,
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Consider the following reaction.
The product (A) is
Consider the following reaction.
The product (A) is
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Hofmann rearrangement
In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromine to give a primary amine that has one carbon lesser than starting amide. General reaction.
Mech :
If the migrating group is chiral then its configuration is retained. Electron releasing effects in the migrating group increases reactivity of Hofmann rearrangement
Hofmann rearrangement
In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromine to give a primary amine that has one carbon lesser than starting amide. General reaction.
Mech :
If the migrating group is chiral then its configuration is retained. Electron releasing effects in the migrating group increases reactivity of Hofmann rearrangement
chemistry-General
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Hofmann rearrangement
In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromine to give a primary amine that has one carbon lesser than starting amide. General reaction.
Mech :
If the migrating group is chiral then its configuration is retained. Electron releasing effects in the migrating group increases reactivity of Hofmann rearrangement
Arrange the following amides according to their relative reactivity when react with Br2 in excess of strong base
I)
II)
III)
IV) <img src="https://mycourses.turito.com/tokenpluginfile.php/c161933dbfaab094c54655ab71e9b8f0/1/question/questiontext/582432/1/1074906/Picture715.png" alt="" width="173" height="78"
Hofmann rearrangement
In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromine to give a primary amine that has one carbon lesser than starting amide. General reaction.
Mech :
If the migrating group is chiral then its configuration is retained. Electron releasing effects in the migrating group increases reactivity of Hofmann rearrangement
Arrange the following amides according to their relative reactivity when react with Br2 in excess of strong base
I)
II)
III)
IV) <img src="https://mycourses.turito.com/tokenpluginfile.php/c161933dbfaab094c54655ab71e9b8f0/1/question/questiontext/582432/1/1074906/Picture715.png" alt="" width="173" height="78"
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Hofmann rearrangement
In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromine to give a primary amine that has one carbon lesser than starting amide. General reaction.
Mech :
If the migrating group is chiral then its configuration is retained. Electron releasing effects in the migrating group increases reactivity of Hofmann rearrangement
Which of the following compound(s) cannot give Hofmann rearrangement :
Hofmann rearrangement
In the Hofmann rearrangement an unsubstituted amide is treated with sodium hydroxide and bromine to give a primary amine that has one carbon lesser than starting amide. General reaction.
Mech :
If the migrating group is chiral then its configuration is retained. Electron releasing effects in the migrating group increases reactivity of Hofmann rearrangement
Which of the following compound(s) cannot give Hofmann rearrangement :
chemistry-General