List of top Chemistry Questions

The van't Hoff factor for 0.5 m aqueous CH₃COOH solution is 1.075. What is the experimentally observed \(\Delta T_f\) (in K) for this solution? \( K_f = 1.86 \, \text{K kg mol}^{-1} \)
The following graph is obtained for an ideal solution containing a non-volatile solute. \(x\)- and \(y\)-axes represent, respectively
containing a non-volatile solute
Observe the following statements about dry cell:
It is a primary battery.
Zinc vessel acts as cathode.
A paste of moist \( \text{NH}_4\text{Cl}, \text{MnO}_2 \), and \( \text{ZnCl}_2 \) is present between two electrodes.
The potential of this cell is 1.5 V.
Calculate the sum of magnetic moments (in Bohr Magnetons, B.M.) of the complexes: \[ [\mathrm{MnCl}_6]^{3-} \quad \text{and} \quad [\mathrm{Mn(CN)}_6]^{3-} \]
The formula of Ammonium phosphomolybdate is
Match the following

The correct answer is:
In which of the following, complex ions are not in correct order with respect to their magnitude of crystal field splitting?
Identify the complex ion with spin only magnetic moment of 4.90 BM.
Match the following:
List-I (Complex)List-II (Isomerism) 
A) [Co(NH3)5Br]SO4V) Ionization
B) [Co(en)3]3+I) Optical
C) [Co(NH3)5(NO2)]2+II) Linkage
D) [Co(NH3)3Cl3]III) Geometrical
The IUPAC name of \([\mathrm{Co(NH_3)_5Cl}]\mathrm{SO_4}\) is:
The coordination number and geometry of \([\mathrm{Ni(CN)_4]^{2-}\) and \([\mathrm{NiCl_4}]^{2-}\) are respectively:}
Which of the following compounds will show geometrical isomerism?
Which is a Lewis acid?
The conjugate base of phosphorus acid is $ x $. The conjugate base of oleum is $ y $. What are $ x $ and $ y $, respectively?
Orthophosphorus acid on disproportionation gives PH$_3$, and another oxoacid of phosphorus X. The basicity of X is

The carboxylic acid with highest $pK_a$ and lowest $pK_a$ values of the following respectively are:

The volume (in mL) of 10 volume \(H_2O_2\) solution required to completely react with 200 mL of 0.4 M \(KMnO_4\) solution in acidic medium is
4 mL of 'X volume' \( \text{H}_2\text{O}_2 \) on heating gives 80 mL of oxygen at STP. The value of X is
Which set of elements form electron-precise hydrides?
Which of the following property is less for D₂O than H₂O?
Identify the correct statements from the following
I.
All alkaline earth metals give hydrides on heating with hydrogen.
II.
Calcium hydroxide is used to purify sugar.
III.
\( \mathrm{BeCl_2} \) is a dimer in gaseous phase.
Which of the following gases has the lowest solubility in water at 298 K?
Hardness of water is estimated by titration with
What are the mole fractions of glucose and water respectively, in 20% (w/w) aqueous glucose solution? (\(C = 12\,u\); \(O = 16\,u\); \(H = 1\,u\))
The osmotic pressure of 0.01 molar solution of an electrolyte is found to be 0.65 bar at 27°C. The van’t Hoff factor of the electrolyte is (R = 0.083 bar L K$^{-1}$ mol$^{-1}$)