List of top Chemistry Questions

$ P_4O_{10} $ dissolves in water to give
Catalyst $SnCl_{2}/HCl$ is used in
Which will undergo fastest $82$ substitution reaction when treated with $NaOH$?
Which of the following ions has the maximum magnetic moment?
Which of the following is not a thermodynamic function?
Which of the following is not an element?
Which of the following is wrong for Bohr model?
Which of the following statements regarding sulphur is incorrect?
When alkyl halide is heated with dry $Ag _{2} O$, it produces
Three perfect gases at absolute temperatures $T_{1}, T_{2}$ and $T_{3}$ are mixed. The masses of molecules are $m_{1}$, $m_{2}$ and $m_{3}$ and the number of molecules are $n_{1}, n_{2}$ and $n_{3}$ respectively. Assuming no loss of energy, the final temperature of the mixture is
Thermosetting polymer, Bakelite is formed by the reaction of phenol with :
The rate of the reaction $ A\xrightarrow{{}} $ products, at the initial concentration of $ 3.24\times {{10}^{-2}}M $ is nine times its rate at another initial concentration of $ 1.2\times {{10}^{-3}}M $ . The order of the reaction is
The products obtained on heating $LiNO_3$ will be :
The pH of stomach is $1.6$, then which enzyme will digest protein?
The number of ions formed when cuprammonium sulphate is dissolved in water is
The molecular weight of acetic acid in vapour phase is
The mass of potassium dichromate crystals required to oxidise $750\, cm^3$ of 0.6 M Mohr's salt solution is : (Given molar mass potassium dichromate = 294, Mohr's salt = 392)
The ionisation potential for $He^+$ is
The given reaction is an example of $As_2O_3 +H_2S \to As_2S_3 + H_2O$
The energy of an electron in $n^{th}$ orbit of the hydrogen atom is given by $E_n = -\frac{13.6}{n^2} eV$. The energy required to raise an electron from the first orbit to the second orbit will be
The electrode potentials for $Cu^{2+}(aq)+e^- \rightarrow Cu^+_{(aq)} $ and $Cu^{+}(aq)+e^- \rightarrow Cu_{(s)} $ are $+ 0.15 \,V$ and $+ 0.50\, V$ respectively. The value of $E^0_{Cu^{2+}/Cu} $ will be
The compound obtained by heating a mixture of ethyl amine and chloroform with ethanolic potassium hydroxide $(KOH)$ is
The alcohol that produces turbidity immediately with Lucas reagent at room temperature
Schottky defect is
$ SF_{4} $ can be classified as