List of top Chemistry Questions

The correct statement(s) about the compound given below is/are
According to $VSEPR$ theory the repulsion between different pair (lone or bond) of electrons obey the order
From the molecular orbital theory, one can show that the bond order in $F_{2}$ molecule as
Differentiating electron in inner transition elements enters the ......... orbital.
The nature of the bond in diamond is
What is (are) number $(s)$ of unpaired electrons in the square planar $[Pt(CN)_4]^{2-}$ ion?
Which of the following can give a Grignard reagent when reacted with magnesium in dry ether?
When copper reacts with hot and conc. $ H_2SO_4, $ gives
The chemical name of anisole is
An aqueous solution of 6.3 g of oxalic acid dihydrate is made upto 250 mL. The volume of $ \text{0}\text{.1}\,\text{N}\,\text{NaOH} $ required to completely neutralize 10 mL of this solution is
If $ X $ is the total number of collisions which a gasmolecule register with others per unit time under particular conditions, then the collision frequency of the gas containing N molecules per unit volume is
The wavelength of the radiation emitted, when in a hydrogen atom electron falls from infinity to stationary state one, would be (Rydberg constant $ =1.097\times {{10}^{7}}\,{{m}^{-1}} $ )
$AgCl$ dissolves in a solution of ${NH_3}$ but not in water because
The weakest acid amongst the following is
When aqueous solution of benzene diazoniumchloride is boiled, the product formed is
What is the stoichiometric coefficient of $Ca$ in the reaction? $Ca + Al^{3+} \to Ca^{2+} + Al$
Which of the following ketones will not respond to iodoform test?
$H_2O_2$ used in rocket has the concentration
The relative humidity on a day when partial pressure of water vapour is $0.012 \times 10^{5} Pa$ at $12^{\circ} C$ is (Take vapour pressure of water at this temperature as $0.016 \times 10^{5}Pa)$
Which of the most volatile compounds?
Alizarin belongs to the class of
For a reaction equilibrium, $N _{2} O _{4}( g ) \rightleftharpoons 2 NO _{2}( g )$, the concentrations of $N _{2} O _{4}$ and $NO _{2}$ at equilibrium are $4.8 \times 10^{-2}$ and $1.2 \times 10^{-2}\, mol / L$ respectively. The value of $k$, for the reaction is:
Setting of plaster of Peris involves
Given standard electrode potentials $Fe ^{2}:+2 e ^{-} \longrightarrow Fe E ^{\circ}=-0 \cdot 440 \,V$ $Fe ^{3+}+3 e ^{-} \longrightarrow Fe E ^{\circ}=-0 \cdot 036\, V$ The standard electrode potential $\left(E^{\circ}\right)$ for $Fe ^{3+}+ e ^{-} \longrightarrow Fe ^{2+}$ is :
In the below reaction $x$ is.