List of top Chemistry Questions

If the elevation in boiling point of a solution of 10 g of solute (mol. wt. = 100) in 100 g of water is \( \Delta T_b \), the ebullioscopic constant of water is?
Iodine is formed when potassium iodide reacts with a solution of?
Which of the following has the maximum number of unpaired d-electrons?
Peptisation involves?
Ph—C=C—CH, undergoes Hg2+ / H+ to give?
Which of the following pairs give positive Tollen’s test?
Which of the following does not represent the correct order of the property indicated?
Which of the following has an ester linkage?
Following process is known as?
The bond angles of \( \text{NH}_3 \), \( \text{NH}_2 \), and \( \text{NH}_4^+ \) are?
2.76 g of silver carbonate on being strongly heated yields a residue weighing?
In the sequence of reactions, the final product (IV) is?
The final product (IV) in the sequence of reactions is?
A gaseous mixture containing He, CH4, and SO2 was allowed to effuse through a fine hole. Then find what molar ratio of gases coming out initially? (Given mixture contains He, CH4, and SO2 in 1:2:3 molar ratio)
According to Bohr’s theory, the angular momentum for an electron of third orbit is?
In the reaction, \[ 8Al + 3Fe_2O_3 \longrightarrow 4Al_2O_3 + 9Fe \] the number of electrons transferred from the reductant to the oxidant is?
An \( f \)-shell containing 6 unpaired electrons can exchange?
The standard molar heat of formation of ethane, CO2, and water (\( \Delta H_f \)) are respectively -21.1, -94.1, and -68.3 kcal. The standard molar heat of combustion of ethane will be?
Which sequence of reactions shows correct chemical relation between sodium and its compounds?
The half-life of two samples are 0.1 and 0.8 S. Their respective concentration are 400 and 0.5. The order of the reaction is?
The equivalent conductivity of a solution containing 2.54g of CuSO4 per liter is 91.0 \( \Omega^{-1} \, \text{cm}^2 \). The conductivity would be?
The solubility product of \( \text{Ag}_2 \text{CrO}_4 \) is \( 3.2 \times 10^{-12} \). What is the concentration of \( \text{CrO}_4^{2-} \) ions in that solution?
Among [Fe(H2O)6]3+, [Fe(CN)6]3-, [Fe(CO)6]3- species, the hybridization state of the Fe atom is?
The rate constant for forward reaction and backward reaction of hydrolysis of ester are \( 1.1 \times 10^{-2} \) and \( 1.5 \times 10^{-3} \) per minute respectively. Equilibrium constant for the reaction is?
Which of the following hydrogen bonds are strongest in vapour phase?