List of top Chemistry Questions

Sodium rosinate is generally added in the soap because it
The correct increasing order of basic strength of following amines, $ {C2H5NH2, NH3, (C2H5)2NH, C6H5NH2}$ in gaseous state is
The magnetite ore is
Buna-$N$ synthetic rubber is obtained by copolymerisation of
The following tripeptide can be synthesized from the following ammo acid
A unit cell with edge length $ a\ne b\ne c $ and axial angles $ \alpha =\beta =\gamma =90^{\circ} $ is called
If the density of methanol is $0.8\, kg\, L ^{-1}$, what is its volume needed for making $4\, L$ of its $0.25\, M$ solution?
A gas can be liquefied at temperature $T$ and pressure $P$ provided
Cold ferrous sulphate solution on absorption of $NO$ develops brown colour due to the formation of
Consider the following salts: $NaCl,\, HgCl_2,\, Hg_2Cl_2,\, CuCl_2,\, CuCl$ and $AgCl$. Identify the correct set of insoluble salts in water
In a mixture, two enantiomers are found to be present in $85\%$ and $15\%$ respectively. The enantiomeric excess $(e, e)$ is
Which one of the following monomers form biodegradable polymer?
$0.06\%\, (w/v)$ aqueous solution of urea is isotonic with
The sum of coordination number and oxidation number of the metal M in the complex \([M(en)_2(C_2O_4)]Cl\) (where en is ethylenediamine) is :-
The rate constant of the reaction $ A \to B$ is $0.6 \times 10^{-3}$ mole per second. If the concentration of A is 5 M, then concentration of $B$ after 20 minutes is :
The electrolyte having maximum flocculation value for $AgI/Ag^+$ sol is
The two electrons have the following set of quantum numbers: $P = 3 , 2 , - 2 , + \frac {1}{2}$ $Q = 3,0,0,+\frac {1}{2}$ Which of the following statement is true ?
In $H_2 - O_2$ fuel cell the reaction occurring at cathode is
How many ions per molecule are produced in the solution when Mohr salt is dissolved in excess of water ?
On heating with concentrated $NaOH$ solution in an inert atmosphere of $CO_2$ white phosphorous gives a gas. Which of the following statement is incorrect about the gas ?
Which one of the following electrolytes has the same value of van't Hoff's factor (i) as that of $ {Al_2(SO_4)_3}$ (if all are 100% ionised) ?
$ : CCl_2 $ is
An alkali metal hydride $(NaH)$ reacts with diborane in $A$ to give a tetrahedral compound $B$ which is extensively used as reducing agent in organic synthesis. The compounds $A$ and $B$ respectively are
How many Coulombs of electricity are required for the oxidation of one mol of water to dioxygen ?
In presence of $HCl, H_2S$ results the precipitation of Group-2 elements but not Gp-4 elements during qualitative analysis. It is due to