List of top Chemistry Questions

The Van't Hoff factor $I$ for a compound which undergoes dissociation in one solvent and association in other solvent is respectively :
The ultimate source of energy in biosphere is
Standard electrode potential of three metals $X, Y $ and $Z$ are $-1.2\,V, + 0.5\,V$ and $-3.0\,V $respectively. The reducing power of these metals will be
A chemical reaction proceeds into the following steps Step I,$\hspace15mm 2A \rightleftharpoons X$ fast Step II,$\hspace10mm X + B \rightleftharpoons Y$ slow Step III,$\hspace10mm Y + B \rightleftharpoons $ Product fast The law for the overall reaction is
By what factor does the average velocity of a gaseous molecule increase when the temperature (in kelvin) is doubled?
The amount of heat evolved when $500 \, cm^3$ of $0.1 \, M \, HCl$ is mixed with $200\,cm^3$ of $0.2 \, M \, NaOH$ is
Which of the following elements is present as the impurity to the maximum extent in the pig iron?
Phenol can be converted to o-hydroxybenzaldehyde by
Which one among the following is most reactive towards electrophilic substitution reaction?
When 'blue vitriol' is heated at $373 \,K$, the product formed is
The lanthanide element that has the electronic configuration, $ [Xe]4f^{7}5d^{1}6s^{2} $ is
In a volumetric experiment, it was found that a solution of $KMnO _{4}$ is reduced to $MnSO _{4}$. If the normality of the solution is $1.0\, N$, then the molarity of the solution will be
Chloroform on heating with silver powder gives
Which one of the following is a secondary amine?
In a reaction $ 2A+B\to A_{2}B, $ the reactant $B$ will disappear at
The alloy of copper that contains zinc is
In zinc blende structure, the coordination number of the cation is
In which of the following compounds, carbon exhibits a valency of $4$ but oxidation state $-2$ ?
Which one of the following amines cannot be prepared by Gabriel's synthesis?
Which of the following compound is chiral?
When a solution containing non-volatile solute is diluted with water
The van't Hoff factor $i$ for a dilute aqueous solution of sucrose is
Which of the following is a correct name according to IUPAC rules?
Which of the following is the largest is size?
The $S.I$ unit of activity of a radioactive sample is