List of top Chemistry Questions asked in UP Board XII

Write the chemical equation for the preparation of Aniline and write the chemical equation of its reaction with the following:
How may the following be obtained?
Write notes on the following: Mechanism of esterification of carboxylic acid:
Write the chemical equation for the preparation of acetaldehyde and write a note on Aldol condensation and cross-Aldol condensation.
Write chemical equations for obtaining carboxylic acid from the following:
Write the color of following metal ions in aqueous solution:
Explain the zero order of reaction by giving examples.
Explain the molecularity of reaction with example.
Calculate the electromotive force of the following cell: \[ \text{Cu} | \text{Cu}^{2+} (1M) || \text{Ag}^{+} (1M) | \text{Ag} \] Given \( E^\circ_{\text{Cu}^{2+}/\text{Cu}} = +0.34V \), \( E^\circ_{\text{Ag}^{+}/\text{Ag}} = +0.80V \)
Fehling’s solution is used to identify which type of compounds? Write chemical equations.
Write the equation of any one of nucleophilic substitution reactions of ethyl bromide.
At what temperature does a 5% (w/v) solution of glucose produce 7 atmospheric osmotic pressure? \([ R = 0.0821 \, \text{L} \cdot \text{atm} / \text{K mol} ]\)
Which one between 0.1 M Urea and 0.1 M NaCl solution will have greater osmotic pressure? Explain the reason.
\(pK_b\) value of aniline is more in comparison to that of methyl amine. State the reason.
Write the chemical equation for the preparation of phenol.
Explain the redox potential.
Differentiate between double salt and complex salt by giving two examples of each.
Write a note on Tollen’s test.
5.85 g of NaCl is dissolved in 200 ml water. Calculate the molarity of the solution. [Na = 23, Cl = 35.5]
How many primary amines are possible for the formula C$_4$H$_{11}$N?
How many primary alcoholic groups are there in glucose?
In comparison to Mn\(^ {3+}\) ions Mn\(^ {2+}\) ions are more stable. Why?
Rosenmund reduction gives
The oxidation number of Cu in the ion [Cu(CN)$_4$]$^{3-}$ is
A colourless ion in the following is