List of top Chemistry Questions

The state of hybridization of carbon and shape of the formaldehyde molecule, respectively are:
The IUPAC name of the following compound is:
An aqueous solution of a dibasic acid (MW = 118) containing 35.4 g of the acid per liter of the solution, has density 1.00 g/cm\(^3\). The normality and molality values of the solution respectively will be:
Which one of the following is the most acidic?
Which one of the following has a non-zero resultant dipole moment?
In an irreversible isothermal expansion of 2 moles of an ideal gas, work done (W) is found to be (-P\(_{ext}\)V). If the same isothermal expansion is carried out reversibly, the work done will be:
The CORRECT electronic configuration of Cr is
The second ionisation enthalpy is the highest for
Which of the following compounds is most acidic?
Identify the major products ‘A’ and ‘B’ for the following reactions:
During a process the enthalpy change of the system, \( \Delta H \) is positive and entropy change of the system, \( \Delta S \) is negative. The process will be:
Identify the strongest base among the following amines:
For the compounds given below, the CORRECT order of increasing oxidation number of I is:
The reducing agent \(X\) suitable for the following reduction reaction is:
The pH value of 0.005 M Ba(OH)_2, assume Ba(OH)_2 is completely ionized, is:
The wavelength of an electron moving with a velocity of \( 2.2 \times 10^7 \, \text{ms}^{-1} \) is:
The INCORRECT combination of quantum numbers amongst the following is:
The main product formed in the following reaction is: \[ CH_3 - CH_2 - CH = CH_2 + HBr \longrightarrow \]
For a first order reaction with rate constant of 230 s\(^{-1}\), the half-life is:
2 moles of a solute is dissolved in 1 kg water (K\_b = 0.52 K kg mol}^{-1}{). The solute dissociates to give 3 moles of particles in solution. The elevation of boiling point will be:
The boiling point and melting point of a pure solvent are 353.3 K and 278.6 K, respectively. A solute is dissolved in the solvent to get a solution. Which one of the following can be true?
A solid forms fcc unit cell with \( 2\text{A} \) side length. If another solid with exactly same atomic radius (\( r \)) as that of the above solid forms a simple cubic lattice, the side length of the unit cell will be:
According to Bohr's theory, when principal quantum number is 2, the radius of \( \text{Be}^{3+} \) will be:
The most effective reaction for the synthesis of 1-methoxy-4-nitrobenzene is:
Among the following, the molecule which shows aromatic character is: