NEB Question Browser

Perkin Condensation reaction

Gibbs-Helmholtz equation is represented as . For what value of will the reaction be spontaneous?

A sequence of reactions is represented as:

Benzene (A) (B) (C)

Predict the name of the reaction that converts (B) to (C).

Williamson's Reaction

2,4-DNP test

Nuclear fusion reaction is also called a thermonuclear reaction. Why?

Reimer-Tiemann Reaction

How can you obtain nitropropane from compound ‘A’?

Identify the titrant and titrand in this titration.

A deep blue complex is formed when conc. ammonium hydroxide is added to an aqueous solution of CuSO. Which of the following formulae represents the complex?

You are given the mixture of two compounds A and B.

A = CH₃CH₂CH₂NH₂ and B = CH₃CH₂NHCH₃

How would you separate their mixture by applying Hoffmann’s method? Give the nitrous acid test to distinguish between compounds A and B.

What is the product formed when alc. KOH solution is used instead of aq. KOH in the above reaction?

Which substitution reaction mechanism occurs in the above reaction and why?

Identify the compound ‘B’ in the above reaction.

Calculate the cell potential for the given cell at 25°C.

Write the complete cell reaction for the given cell.

Define standard heat of formation. Calculate the heat of formation of acetic acid from the following data:

C(s) + O₂(g) → CO₂(g), ΔH = −99 kcal/mol
H₂(g) + 1/2 O₂(g) → H₂O(l), ΔH = −68 kcal/mol
CH₃COOH(l) + 2O₂(g) → 2CO₂(g) + 2H₂O(l), ΔH = −208 kcal/mol

A compound 'Z' with molecular formula C₃H₄O₄ is heated to produce compound 'Y' and CO₂ gas. Heating of 'Y' with P₂O₅ forms compound 'X' and a water molecule. Identify the compound 'X'.

The organic compound (X) boiled with water gives phenol. What is the compound (X)?

Why is dil. H₂SO₄ added to the conical flask containing standard oxalic acid before titrating with KMnO₄ solution?