List of top Chemistry Questions

Which of the following is an example of Maximum boiling azeotrope?
A 5% solution of cane sugar (molar mass 342) is isotonic with 1% of a solution of an unknown solute. The molar mass of unknown solute in g/mol is:
To prepare 2 $dm^3$ of decinormal solution of oxalic acid, the mass of oxalic acid required is
The rate constant of a reaction is $\text{mol} \,L^{-}\, S^{-1}$. The reaction is
Which one of the following is an example for pseudo first order reaction?
For a first order gas phase reaction- $A_{\left(g\right)} \to 2B_{\left(g\right)} + C_{\left(g\right)}$ P be initial pressure of A and P the total pressure at time 't'. Integrated rate equation is
Dissolving 120 g of urea (mol. wt. 60) in 1000 g of water gave a solution of density 1.15 g/mL. The molarity of the solution is
Equivalent and molecular masses are same in
12 g of Mg with excess of HCI at NTP gives
The molality of a urea solution in which 0.0100 g of urea, $[(NH_2)_2CO]$ is added to 0.3000 $dm^3$ of water at STP is:
What is the equivalent weight of $SnCl _{2}$ in the following reaction, $SnCl _{2}+C l_{2} \rightarrow S n C l_{4} ?$
What is the time (in sec) required for depositing all the silver present in $125\, mL$ of $1\, M \, AgNO _{3}$ solution by passing a current of $241.25 \, A$? ($IF = 96500$ coulombs)
$Mg ^{2+}$ is isoelectronic with
Which one of the following species is diamagnetic in nature?
Most stable carbocation is
In Kjeldahl's method, the nitrogen present is estimated as
Most stable carbocation is
: Methyl cyanide has higher boiling point than methyl isocyanide. : Dipole moment of methyl cyanide is higher than that of methyl isocyanide.
If the salts $ M_2X $ , $ QY_2 $ and $ PZ_3 $ have the same solubilities, their $ K_{sp} $ values are related as
A vessel at 1000 K contains $CO_2$ with a pressure of 0.5 atm. Some of the $CO_2$ is converted into CO on the addition of graphite. It the total pressure at equilibrium is 0.8 atm, the value of K is
$K_{sp}$ of $CaSO_4\cdot5H_2O$ is 9 x $10^{-6}$, find the volume for 1 g of $CaSO_4$ (M.wt. = 136).
What is the $pH$ of a $0.5\, M$ aqueous solution of $NH_4Cl$ with $0.2\, M \,NH_3$? $ (pK_a = 9.25)$
Le-Chatelier?s principle is not applicable to
Given a gas phase reaction, $\hspace10mm 2A(g)+B(g) \rightleftharpoons C(g)+D(g)$ Which one of the following changes will affect the value of $K_c$?
The equilibrium constant for mutarotation $\alpha-D \rightleftharpoons \beta-D$ Glucose is $1.8$. What percentage of $\alpha$ form remains at equilibrium?