List of top Chemistry Questions

Ammoniacal silver nitrate forms a white precipitate easily with
Consider the following equilibrium, $$ 2 \text{NO}(g) \rightleftharpoons \text{N}_2 (g) + \text{O}_2 (g); K_1 = 2.4 \times 10^{20} $$ $$ \text{NO}(g) + \frac{1}{2} \text{Br}_2 (g) \rightleftharpoons \text{NOBr}(g); K_2 = 1.4 $$ Calculate $ K_C $ for the reaction, $$ \frac{1}{2} \text{N}_2 (g) + \frac{1}{2} \text{O}_2 (g) + \frac{1}{2} \text{Br}_2 (g) \rightleftharpoons \text{NOBr}(g) $$
Which of the following is incorrect regarding Henry's law?
t-butyl chloride preferably undergo hydrolysis by
Which of these represents the correct order of decreasing bond order?
In a 0.2 M aqueous solution, lactic acid is 6.9% dissociated. The value of dissociation constant is
Pick up the correct statement.
Total number of $\sigma$ and $\pi$ bonds in ethene molecule is
A buffer solution has equal volumes of 0.1 M NH$_3$OH and 0.01 M NH$_4$Cl. The pK$_b$ of the base is 5. The pH is
Assuming no change in volume, the time required to obtain solution of pH = 4 by electrolysis of 100 mL of 0.1 M NaOH (using current 0.5 A) will be

Which of the following compounds would not be expected to decarboxylate when heated?

Which of these molecules have non-bonding electron pairs on the central atom?

For a cell reaction, $ A(s) + B^{2+}(aq) \rightarrow A^{2+}(aq) + B(s) $; the standard emf of the cell is 0.295 V at 25°C. The equilibrium constant at 25°C will be
Which of the following shows negative deviation from Raoult's law?
5 g of non-volatile water soluble compound X is dissolved in 100 g of water. The elevation in boiling point is found to be 0.25. The molecular mass of compound X is
The correct decreasing order of negative electron gain enthalpy for C, Ca, Al, F and O is

I and II are

Ti$^2+$ is purple while Ti$^4+$ is colourless because
In Friedel-Crafts alkylation reaction of phenol with chloromethane, the product formed will be
Which among the following is diamagnetic?
Which one of the following is an important component of chlorophyll?
A volatile compound is formed by carbon monoxide and
The complex $ [PtCl_2(en)_2]^{2+} $ ion shows
15 g of $ \text{CaCO}_3 $ completely reacts with
Bohr's radius of 2nd orbit of $ \text{Be}^{3+} $ is equal to that of