List of top Chemistry Questions

bond angle is less than the normal tetrahedral bond angle. Lone pair-lone pair repulsion decreases bond angle.
2-Methyl-1, 3-butadiene is the monomer of natural rubber. Natural rubber is formed through anionic addition polymerisation.
According to Bohr?? theory, which of the following correctly represents the variation of energy and radius of an electron in n orbit of H-atom?
The contribution of particle at the edge centre to a particular unit cell is.
Predict the product $C$ in the following series of reactions : $CH _{3}- COOH \stackrel{ PCl _{ 5 }}{\longrightarrow} A { ->[{C_6H_6}][{{\text{Anhyd}} . Alcl_3}] } B { ->[CH_3MgBr] C}$
$H_3BO_3$ is a weak acid. Water extracts the proton of $H_3BO_3$.
Arrange the given compounds in decreasing order of boiling points.
Which of the following reagents cannot be used for the given conversion?
The acidic strength of the given compounds follows the order
Ease of nucleophilic addition in the given compounds is
Paints and hair creams are respectively
A conductivity cell has a cell constant of 0.5 cm. This cell when filled with 0.01 M NaCl solution has a resistance of 384 ohms at 25$^{\circ}$C. Calculate the equivalent conductance of the given solution.
How many Faradays of electricity are required for the given reaction to occur ? $ {MnO4^{-} -> Mn^{2+}}$
Which of the following reacts fastest with conc. $HCl$ ?
The Lewis acidity of $BF_3$ is less than $BCl_3$ even though fluorine is more electronegative than chlorine. It is due to
In $OF_2$, oxygen has hybridization of
Which one is not the property of crystalline soild ?
Friedel - Craft reaction is not related with :
The decreasing order of electron affinity is:
Transition state $2\, (TS2)$ is structurally most likely as:
Which of the following compounds contain at least one secondary alcohol?
The isomerism exhibited by following compounds $[Co(NH_3)_6][Cr(CN)_6]$ and $[Cr(NH_3)_6][Cr(CN)_6]$ is
In the complex ion $\left[Cu\left(CN\right)_{4}\right]^{3-}$ the hybridization state, oxidation state and number of unpaired electrons of copper are respectively
The maximum number of 2p electrons with electronic spin $=-\frac{1}{2}$ are
For $N^{3-} >O^{2-}>F^{-} and Na^{+},$ the order in which their ionic radii varies is