List of top Chemistry Questions

Identify the correct statement describing the characteristics of \(C_2\) molecule.
What would be the products obtained when a mixture of p-Methoxy benzaldehyde and Methanal are heated with 50% concentrated Caustic soda solution?

Identify the compounds A, B, C, and (D):

Which of the following will show geometrical isomerism?

Match the Coordination compounds given in Column I with their characteristic features listed in Column II.

The group number of the element in the periodic table with the electronic configuration $(n - 1)d^2 ns^2$. For $n = 4$ is:

Match the items in Column I with their description in Column II:

Which one of the following will give a positive result when it is warmed with Chloroform and alcoholic solution of KOH?
Identify the final product formed during the course of the given reactions.
% Reaction given Pentan-2-one $\xrightarrow{\text{NaCN/HCl}} [X] \xrightarrow{\Delta, 95% H_2SO_4} [Y]$
Choose the incorrect statement.

Identify the reagents X, Y and Z used to bring out the following reactions.

Para and ortho hydrogen differ in:
A proton having mass equal to \(1.66 \times 10^{-27}\) kg is accelerated to one tenth of the velocity of light. If its velocity can be measured to an accuracy of \(\pm 2%\), what would be the uncertainty in its position?
The conversion of Propyne to Benzene can be brought out in 4 steps.
Choose the reagents to be used, in the proper sequential order, to bring out the conversion.
Select the strongest base from the given compounds:

For a reaction of the type, \( 2X + Y \rightarrow A + B \), the following is the data collected:

From among the following, identify the compound which forms two moles of a ketone on ozonolysis.
If electrolysis of water is carried out for a time duration of 2 hours, how much electric current in amperes would be required to liberate 100 ml of O\(_2\) gas measured under standard conditions of temperature and pressure?
In neutral medium KMnO$_4$ oxidises MnSO$_4$ to __________
Which one of the following compounds would not undergo Aldol condensation?
Gaseous Nitrous oxide decomposes at 298 K to form Nitrogen gas and Oxygen gas. The \(\Delta H \text{ for the reaction at 1.0 atm pressure and 298 K is } \)-163.15 \(\text{ kJ}\). Calculate Internal energy change for the decomposition of 100 g of Nitrous oxide gas under the same conditions of temperature and pressure.

Match the following characteristics of transition metals given in Column I with the examples listed in Column II:

Identify the starting compound from the following data: \[ C_6H_{14}O(X) \text{ on reaction with HI yields a haloalkane (A) and an alcohol (B).} \] Compound (A) on reaction with aqueous NaOH gives an alcohol (C). Compounds (B) and (C) on reaction with CrO\(_3\) in anhydrous medium yields Butanone and Ethanal respectively.
5.8 g of a gas maintained at 95\(^\circ C\) occupies the same volume as 0.368 g of hydrogen gas maintained at a temperature of 17\(^\circ C\) and pressure being the same atmospheric pressure for both the gases. What is the molecular mass of the unknown gas?
A first order reaction proceeds to 90% completion. What will be the approximate time taken for 90% completion in relation to \(t_{1/2}\) of the reaction?