List of top Chemistry Questions

Which one of the following compounds is the most reactive in \( S_N1 \) reaction?
Lactose is a disaccharide present in milk. It comprises of
For the following reaction \[ 2 \text{Mn}^{3+} (\text{aq}) + 3 \text{N}_2^{2+} (\text{aq}) \rightarrow 3 \text{Mn}^{2+} (\text{aq}) + 2 \text{N}_2 (\text{s}) \] The standard Gibbs free energy change (\(\Delta G^\circ\)) of the reaction is
The IUPAC name of the following compound is:
For a multielectron atom, the CORRECT order of the orbital energy is
The state of hybridization of carbon and shape of the formaldehyde molecule, respectively are:
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:
The standard electrode potential of electrode-A and electrode-B are \(-0.25 \, \text{V}\) and \(-0.76 \, \text{V}\), respectively. If a Galvanic cell is created using these two electrodes, the standard electromotive force (EMF) of this cell will be:
The second ionisation enthalpy is the highest for
Which one of the following is the most acidic?
The CORRECT electronic configuration of Cr is
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:
Which one of the following has a non-zero resultant dipole moment?
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 major products ‘A’ and ‘B’ for the following reactions:
Which of the following compounds is most acidic?
The reducing agent \(X\) suitable for the following reduction reaction is:
Identify the strongest base among the following amines:
For the compounds given below, the CORRECT order of increasing oxidation number of I is:
The INCORRECT combination of quantum numbers amongst the following is:
The pH value of 0.005 M Ba(OH)_2, assume Ba(OH)_2 is completely ionized, is:
The main product formed in the following reaction is: \[ CH_3 - CH_2 - CH = CH_2 + HBr \longrightarrow \]
The wavelength of an electron moving with a velocity of \( 2.2 \times 10^7 \, \text{ms}^{-1} \) is:
For a first order reaction with rate constant of 230 s\(^{-1}\), the half-life is:
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: