List of top Chemistry Questions

$CO+ H_2\xrightarrow[X(catalyst)]{300^\circ C/300\, atm} CH_3OH$ The catalyst $X$ is
Ionisation energy of $He^+$ is $19.6 \times 10^{-18}\, J\, atom^{-1}$. The energy of the first stationary state $(n = 1)$ of $Li^{2+}$ is
The potential of a hydrogen electrode at $pH = 10$ is
Which of the following is an outer orbital complex ?

Which of the following is known as oil of vitriol ?

The function of copper-\(T\) is to prevent
The strongest base among the following is
Which of the following structures represents neoprene polymer?
Which of the following has highest ionization enthalpy?
Which of the following has the highest electron affinity?
A spontaneous reaction is impossible if.
Identify Z in the sequence $ C{{H}_{3}}COON{{H}_{4}}\xrightarrow{\Delta }X\xrightarrow[\Delta ]{{{P}_{2}}{{O}_{5}}}Y\xrightarrow{{{H}_{2}}O/{{H}^{+}}}Z $
18 g of glucose $(C_6H_{12}O_6)$ is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at 100$^\circ$C
How many hydrogen bonded water molecule $ (s) $ are associated with $ CuSO_4 \cdot 5H_2O $ ?
Calculate the mass of urea $\left( NH _{2} CONH _{2}\right)$ required in making $2.5 \,kg$ of $0.25$ molal aqueous solution.
In the following reaction, major product obtained is
Four solutions of $K_{2}SO_{4}$ with the following concentration $0.1\, M,\, 0.01\, m,\, 0.001\, m$ and $m$ are available. The maximum value of van' t Hoff factor, $i$, corresponds to
Volume of $0.1 \,M\, NaOH$ needed for the neutralisation of $20\, mL$ of $0.05\, M$ oxalic acid is
Identify the substance whose $0.1\, M$ solution is basic?
To an equilibrium mixture of $2 SO _{2(g)}+ O _{2(g)} \rightleftharpoons 2 SO _{3(g)}$ some helium, an inert gas, is added at constant volume. The addition of helium causes the total pressure to double, which of the following is true?
What will be the resultant $pH$ when $200\, mL$ of, an aqueous solution of $HCl(p H=2.0)$ is mixed with $300\, mL$ of an aqueous solution of $NaOH (pH=12)$ ?
The state of a thermodynamic system is represented by
The vapour pressure of pure liquid solvent is $0.80\, atm$. When a non-volatile substance $B$ is added to the solvent, its vapour pressure drops to $0.6\, atm$. What is the mole fraction of component $B$ in this solution?
$36\, g$ of glucose (molar mass $ =180\,g/mol $ ) if present in $500\,g$ of water, the molality of the solution is
If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, the change in freezing point of water $\left(\Delta T_{f}\right)$, when $0.01\, mol$ of sodium sulphate is dissolved in $1\, kg$ of water, is $(K_f = 1.86\, K\, kg\, mol^{-1})$