Which of the following reactions is suitable for converting an acid amide to an imidazole?
Show Hint
- Carbon Emission Reaction
- Hofmann Bromide Reaction
- Stepan Reaction
- Gabriel Thalamide Condensation
The Correct Option is B
Solution and Explanation
Top Questions on Organic Reactions
Identify A in the following reaction.
- JEE Main - 2026
- Chemistry
- Organic Reactions
- 14.0 g of calcium metal is allowed to react with excess HCl at 1.0 atm pressure and 273 K. Which of the following statements is incorrect?
\([Given: \text{Molar mass of } Ca = 40, Cl = 35.5, H = 1 \text{ g mol}^{-1}] \)- JEE Main - 2026
- Chemistry
- Organic Reactions
For the reaction, \(N_{2}O_{4} \rightleftharpoons 2NO_{2}\) graph is plotted as shown below. Identify correct statements.
A. Standard free energy change for the reaction is 5.40 kJ \(mol^{-1}\).
B. As \(\Delta G\) in graph is positive, \(N_{2}O_{4}\) will not dissociate into \(NO_{2}\) at all.
C. Reverse reaction will go to completion.
D. When 1 mole of \(N_{2}O_{4}\) changes into equilibrium mixture, value of \(\Delta G = -0.84 \text{ kJ mol}^{-1}\).
E. When 2 mole of \(NO_{2}\) changes into equilibrium mixture, \(\Delta G\) for equilibrium mixture is \(-6.24 \text{ kJ mol}^{-1}\).
Choose the correct answer from the following.- JEE Main - 2026
- Chemistry
- Organic Reactions
- Consider the following carbocations: (A) $\text{CH}_3\text{C}^+\text{H}_2 \rightarrow \text{B} \rightarrow \text{CH}_3-\text{C}^+\text{H}-\text{CH}_3 \rightarrow \text{C} \rightarrow (\text{CH}_3)_3\text{C}^+$. Statement-I : B is more stable due to $9\alpha H$. Statement-II: A is less stable due to $3\alpha H$.
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- Chemistry
- Organic Reactions
- Identify (A)
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- Chemistry
- Organic Reactions
Questions Asked in UPCATET exam
If 0.01 mol of $\mathrm{P_4O_{10}}$ is removed from 0.1 mol, then the remaining molecules of $\mathrm{P_4O_{10}}$ will be:
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- Stoichiometry and Stoichiometric Calculations
- Unit of \( K_C \) for equilibrium:
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- Law Of Chemical Equilibrium And Equilibrium Constant
An element has two isotopes having atomic masses 10 and 15 u, respectively. If the percent abundance of lighter isotopes is 80%, then the average atomic mass of the element is:
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- Atomic Structure
- Choose the correct statement
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- Friction
- T² vs l graph represents:
- UPCATET - 2025
- simple harmonic motion