List of top Chemistry Questions

Wilkinson catalyst is :
The kinetic study of a reaction like vA $\to$ P at 300 K provides the following curve, where concentration is taken in mol dm$^-3$ and time in min. Identify the correct order(n) and rate constant(k) :
The effect of lanthanoid contraction in the lanthanoid series of elements by and large means :
The $71^{st}$ electron of an element $X$ with an atomic number of $71$ enters into the orbital :
The metal that forms nitride by reacting directly with $N_2$ of air, is :
The coordination numbers of Co and Al in ${ [Co(Cl)(en)2]Cl}$ and ${K3[Al(C2O4)3]}$, respectively, are : (en=ethane-1,2-diamine)
The pH of a 0.02M $NH_4Cl$ solution will be [given $K_b(NH_4OH) = 10^{-5}$ and log2=0.301]
The number of bridging $CO$ ligand (s) and $Co - Co$ bond (s) in $ {CO_2(CO)_8}$, respectively are :
A solution of sodium sulfate contains $92\, g$ of ${Na^{+}}$ ions per kilogram of water. The molality of ${Na^{+}}$ ions in that solution in ${mol \; kg^{-1}}$ is:
The idea of froth floatation method came from a person $X$ and this method is related to the process $Y$ of ores. $X$ and $Y$, respectively, are:
Consider the given plots for a reaction obeying Arrhenius equation $(0^{\circ}C < T < 300^{\circ}C)$ : ($k$ and $E_a$ are rate constant and activation energy, respectively) Choose the correct option :
The metal used for making $X$-ray tube window is :
Which of the following is a condensation polymer?
Which is wrong with respect to our responsibility as a human being to protect our environment ?
The volume occupied by 1.8 g of water vapour at 374 °C and 1 bar pressure will be :- [Use R = 0.083 bar L $K^{-1}mol^{-1}$]
In the Bayer�s process, the leaching of alumina is done by using
Poly-$\beta$-hydroxybutyrate-co-$\beta$ hydroxyvalerate (PHBV) is a copolymer of___.
The correct statement regarding the given Ellingham diagram is:
When neutral or faintly alkaline KMnO4 is treated with potassium iodide, iodide ion is converted into 'X'. 'X' is -
The reaction in which $2$ molecules of chlorobenzene reacts with metallic sodium in presence of dry ether forming diphenyl is an example of,
What is the atomicity of aluminium phosphate?
Conjugate base for Bronsted acids $H_2O$ and $HF$ are:
Orbital having 3 angular nodes and 3 total nodes is :-
The rate of decrease of kinetic energy is 9.6j/s. Find magnitude of force acting on particle when it�s speed in 3 m/s?
Reversible expansion of an ideal gas under isothermal and adiabatic conditions are as shown in the figure. AB $\rightarrow$ Isothermal expansion AC $\rightarrow$ Adiabatic expansion Which of the following options is not correct ?