List of top Chemistry Questions asked in UP Board XII

Differentiate between the following:
(i) Propanal and Propanone,
(ii) Phenol and Benzoic acid.
The resistance of a column formed by a 0.10 mol L^{-1} concentrated solution is 6.5 × 10^3 ohm. Its diameter is 1 cm and length is 50 cm. Calculate its resistivity, conductivity and molar conductivity.
Alcohols are more soluble in water in comparison to hydrocarbons of comparable molecular weight. Explain.
Explain the following reactions with suitable chemical equations:
(i) Wurtz reaction
(ii) Wurtz-Fittig reaction
Show the geometrical isomers of \([Fe(NH_3)_2(CN)_4]\).
Calculate molality of a solution of 5.0 g of ethanoic acid (CH}_3\textbf{COOH) in 150.0 g of benzene.
Reagent, which do not react with acetone and benzaldehyde:
How many ions will be generated from the solution of the complex \( [Co(NH_3)_6]Cl_2 \)?
Give an example of such solid solution in which solute is gas.
Write short notes on the following: Coupling reaction:
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 IUPAC names of the following:
Explain the mechanism of the reaction of diethyl ether with HI.
Explain the mechanism of dehydration of alcohol.
Write the chemical equation for the preparation of acetaldehyde and write a note on Aldol condensation and cross-Aldol condensation.
Write notes on the following: Mechanism of esterification of carboxylic acid:
Write chemical equations for obtaining carboxylic acid from the following:
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 color of following metal ions in aqueous solution:
At what temperature does a 5% (w/v) solution of glucose produce 7 atmospheric osmotic pressure? \([ R = 0.0821 \, \text{L} \cdot \text{atm} / \text{K mol} ]\)
Write the equation of any one of nucleophilic substitution reactions of ethyl bromide.