List of top Chemistry Questions

Which of the following react with Hinsberg reagent?
Lassaigne's test: Ionic bond converts to covalent bond.
The coefficients of thermal conductivity are given as: \[ K_1 = 60 W/m^\circ C, K_2 = 120 W/m^\circ C, K_3 = 135 W/m^\circ C \] The temperature at the leftmost end is 100°C and the rightmost end is 0°C. Find the temperature \( \theta \) at the junction.
Which of these is aromatic in nature?
Which of the following pair of ions are same coloured?
Which of the following can show face-mer isomerism?
Which of the following elements doesn't lie on the same period?
How many compounds have a linear shape among \( \text{SO}_2 \), \( \text{BeCl}_2 \), \( \text{N}_3^- \), \( \text{I}_3^- \), \( \text{NO}_2^+ \), \( \text{NO}_2 \)?
Density of 3 M NaOH is 1.25 g/ml. Molality of solutions is.
Which of the following has the maximum size?
In the reaction \( 2A + B \rightarrow C \), if the rate law is \( \text{Rate} = k[A]^2[B] \), what is the overall order of the reaction?
Which of the following compounds exhibits ionic bonding?
In an oxidation-reduction reaction, what happens to the oxidation state of the central atom in \( \text{MnO}_4^- \) when it is reduced to \( \text{Mn}^{2+} \)?
In the reaction \( 2\text{H}_2\text{O}_2 \rightarrow 2\text{H}_2\text{O} + \text{O}_2 \), what is the role of potassium iodide (KI) in this reaction?
What is the shape of the \( \text{ClO}_2^- \) ion according to VSEPR theory?
What is the hybridization of the central atom in the molecule \( \text{SO}_3 \)?
Which of the following is the correct order of acidic strength for the following compounds: HNO\(_3\), HClO\(_4\), and HClO\(_3\)?
Compare boiling point of given solutions:
(i) \( 10^{-4} \) NaCl
(ii) \( 10^{-3} \) NaCl
(iii) \( 10^{-2} \) NaCl
(iv) \( 10^{-4} \) urea
Find the dimensions of \( \frac{B}{\mu_0} \)
For \([ \text{NiCl}_4 ]^{2-}\), what is the charge on the metal and shape of the complex respectively?
The major products from the following reaction sequence are product A and product B.
The total sum of \(\pi\) electrons in product A and product B are ______ (nearest integer)
The observed molecular weight of a 1:1 strong electrolyte is 117 g mol\(^{-1}\) as determined by the depression of freezing point method. Its theoretical molecular weight is 60 g mol\(^{-1}\). The percentage dissociation of the electrolyte is:

At 298 K, for a first order reaction (A → P) the following graph is obtained. The rate constant (in s\(^{-1}\)) and initial concentration (in mol L\(^{-1}\)) of ‘A’ are respectively: 

The following results were obtained in the gas phase reaction between nitric oxide and oxygen at a given temperature.

Enthalpy of combustion of ethylene gas at constant pressure of 1 atm and at 300 K is -1410 kJ mol\(^{-1}\). The enthalpy change for the reaction at constant volume and at the same temperature is about (R = 8.3 J K\(^{-1}\) mol\(^{-1}\)):