List of top Chemistry Questions

Calculate $K_{C}$ for the reversible process given below if $K_{P}=167$ and $T=800^{\circ} C$ $CaCO _{3}( s ) \rightleftharpoons CaO ( s )+ CO _{2}( g )$
$0.1\, (M)\, HCl$ and $0.1\, (M)\, H_2SO_4$ each of volume $2ml$ are mixed and the volume is made up to $6\, ml$ by adding $2\,ml$ of $0.01\, (N)\, NaCl$ solution. The $pH$ of the resulting mixture is
The relation between $K_p$ and $K_c$ for the following reaction is $\hspace10mm N_2 (g)+3H_2(g) \longrightarrow 2NH_3(g)$
The pH of 10$^{-3}$ M solution of NaOH is
A solution contains 10 mL 0.1 N NaOH and 10 mL $0.05 NH_2SO_4 $,PH of this solution is
Which of the following mixtures can be used to prepare a buffer solution ?
For the reaction, $N_{2}(g)+3 H_{2}(g) \rightleftharpoons 2 N H_{3}(g)$ at $400\, K,\, K_{p}=41 .$ Find the value for the following reaction, $\frac{1}{2} N _{2}(g)+\frac{3}{2} H _{2}(g) \rightleftharpoons NH _{3}(g)$
The maximum number of $P-H$ bonds are contained in which of the following molecules?
Which of the following processes occurs in the electrolysis of an aqueous solution of nickel chloride at nickel anode?
The shape and hybridisation of some xenon oxyfluorides are given. Choose the wrong set.
Total number or voids in $0.5$ mole or compound forming hexagonal closed packed structure are
Crystals can be classified into basic crystal habits equal to
At identical temperature and pressure, the rate of diffusion of hydrogen gas is $3\sqrt{3}$ times that of a hydrocarbon having molecular formula $C_{n}H_{2n-2}$. What is the value of $'n'$ ?
Structural formula of Lewisite is
Water gas is a mixture of
The white $ ZnO $ turns yellow on heating because of
The standard enthalpy of formation of $NH_3$ is $-46.0\, kJ \,mol^{-1}$. If the enthalpy of formation of $H_2$ from its atoms is $-436\, kJ \,mol^{-1}$ and that of $N_2$ is $-712\, kJ\, mol^{-1}$, the average bond enthalpy of $N-H$ bond in $NH_3$ is
The standard emf of a galvanic cell involving $3$ moles of electrons in its redox reaction is $0.59 \,V$. The equilibrium constant for the reaction of the cell is
The product formed as a result of reaction of $ C{{H}_{3}}MgBr $ and $ C{{O}_{2}} $ , on further hydrolysis gives
The phosphate of a metal has the formula $MHPO_4$. The formula of its chloride would be
The heat liberated when $1.89\, g$ of benzoic acid is burnt in a bomb calorimeter at $25 ^{\circ} C$ increases the temperature of $18.94\, kg$ of water by $0.632^{\circ} C$. If the specific heat of water at $25^{\circ} C$ is $0.998\, cal/g$ the value of the heat of combustion of benzoic acid is
The Gibbs' energy for the decomposition of $ {Al2O3 }$ at $500^{\circ} C$ is as follows: $ { \frac{2}{3} Al_2 O_3 -> \frac{4}{3} Al + O_2 ; \Delta_r G = + 960 \, kJ \, mol^{-1} }$ The potential difference needed for the electrolytic reduction of aluminium oxide $ {(Al2O3)}$ at $500^{\circ} C$ is at least
In the following which is soap?
In the following which is not glyceride?
Which of the following has electrovalent linkage?