List of top Chemistry Questions

F-centre is
Zone refining is based on the solubility of impurities in the molten state than in the solid state of the metal. Pure metal oxide is obtained in zone refining.
$Si??i$ bonds are much stronger than $Si??$ bonds. Silicon forms double bonds with itself.
$Pb_3O_4$ reacts with $HNO_3$ and forms $PbO_2$. Lead is stable in $+4$ oxidation state.
Oxidation state of hydrogen is +1 in $H_2O$ while -1 in $CaH_2$. $CaH_2$ is a metal hydride and for hydrides, hydrogen is assigned the oxidation number of -1.
Oxidation of glucose by $Br_2$-water gives saccharic acid. $Br_2$-water oxidises ??HO and ??H group.
On passing electric current in colloidal solution they do not move towards anode or cathode. They do not contain any charge.
Metal deficiency defect can be seen in $FeO$. $Li$ compound (LiCl) has pink colour due to F-center.
Due to Frenkel defect, there is no effect on the density of the crystalline solid. In Frenkel defect, no cation or anion leaves the crystal.
$Al$ forms $[AlF_6]^{3-}$ but B does not form $[BF_6]^{3-}$. $B$ does not react with $F_2$.
Which of the following acts as a nucleophile in the aldol condensation of ethanal? (i) OH $\quad\quad$ (ii) H? : (iii) CHCHO
During the fusion of organic compound with sodium metal, nitrogen present in the organic compound is converted into
The final product of the given reaction is
Which of the following order is correct?
In which of the following elements number of d-electrons is zero in 6d-orbital?
Which of the following exhibits minimum number of oxidation states?
Which of the following contains atleast one lone pair in all of its halides?
Major product of the given reaction is
Which of the following is not an example of addition polymer
Which reagent is capable of giving test both of Aldehyde and ketones
Which among the following compounds will have meso form
How benzene is converted into n - propyl benzene
Ferric chloride is used to stop bleeding in cuts because
$CH_3MgI$ will give methane with
Which of the following is a tricarboxylic acid?