List of top Chemistry Questions

The correct order of boiling points of following molecules is:
A reaction, 3X(g) $\rightarrow$ 2Y(g) + Z(g) takes place in a closed vessel. What is the rate of formation of Y (in mol L$^{-1}$ s$^{-1}$) if the rate of disappearance of X is 7.2 $\times$ 10$^{-3}$ mol L$^{-1}$ s$^{-1}$?
Which one of the following is a semiconductor?
Which of the following reactions is not correct?
Match the following
graphite
Observe the following species: AlCl$_3$, NH$_3$, H$^+$, Co$^{3+}$, $^-$OH, Mg$^{2+}$, BF$_3$, Cl$^-$ How many Lewis acids are present in the above list?
The standard electrode potential (in V) values for Al$^{3+}$/Al, Tl$^{3+}$/Tl are respectively
Observe the following equilibrium $$\text{Fe}^{3+}(aq) + \text{SCN}^-(aq) \rightleftharpoons [\text{Fe(SCN)}]^{2+}(aq)$$ yellow \hspace{1cm colourless \hspace{1cm} deep red}
Addition of aqueous oxalic acid solution to the above equilibrium
Among the following, the incorrect statement is:
The compounds having coordinated water are:
I. CrCl$_3$.6H$_2$O
II. BaCl$_2$.2H$_2$O
III. CuSO$_4$.5H$_2$O
At T (K), a gaseous mixture of H$_2$ and O$_2$ containing 20% (weight/weight) of H$_2$ exerts a total pressure of 2 bar. What is the partial pressure of O$_2$ (in bar)?
The hybridization of central atom of ClF$_3$, NH$_3$, SO$_3$ are respectively
x g of methane was burnt completely in the presence of oxygen. The liberated gases were passed into a solution containing 370 g of Ca(OH)$_2$. The weight of white precipitate obtained was 500 g. What is the value of x (in g)? (Given : C = 12; H = 1; Ca = 40; O = 16 u)
The following data is obtained for one mole of a gas. The gas behaves as an ideal gas in the pressure range (in bar)
gas behaves as an ideal gas
The number of extensive and intensive properties in the following list is respectively: Mass, temperature, pressure, enthalpy, heat capacity, internal energy, density
If one litre of an ideal gas at a pressure of 20 atm expands isothermally and reversibly to a final volume of 'X' L by absorbing 92.12 L.atm heat, 'X' (in L) is
In which of the following, orbitals are correctly arranged in the increasing order of their energies?
The correct order of the metallic nature of the following elements is
Match the following
hybridisation
The ion with smallest radius among the following is
The energy (in J) released when an excited electron of 5$^{\text{th}}$ orbit of hydrogen atom returns to its ground state is
The sequence of reagents required to convert aniline to benzene nitrile are
What are 'X' and 'Y' in the following reaction?
conc.naoh
What are 'X' and 'Y' respectively in the following reaction sequence?
styrene
Which of the following are fibrous proteins? Keratin, Insulin, Myosin, Albumin