List of top Chemistry Questions

In the removal of permanent hardness of water by permutit process, \(Na^+\) ions of permutit are exchanged with which ions of water?
The standard electrode potentials of Zn, Ag and Cu are \(-0.76\), \(+0.80\) and \(+0.34\) V respectively. Identify the correct statement from the following.
The amount of silver in mg deposited when \(9.65\) coulombs of electricity is passed through an aqueous solution of silver nitrate is \((Ag=108\,u,\ 1F=96500\,C\,mol^{-1})\)
Aqueous solution of which of the following does not act as electrolyte?
Number of coulombs corresponding to \(1\) mol of electrons approximately is equal to
\(4\) g of NaOH is dissolved in \(1.0\) L solution. The pH of solution is
Identify the pair containing only Lewis acids.
\(3\times 10^{22}\) molecules of \(Na_2CO_3\) \((\text{molecular weight}=106)\) are present in \(500\) ml of solution. The normality of the solution formed is \((N_A=6\times 10^{23}\,mol^{-1})\)
\(x\) ml of \(0.1\,M\) NaOH solution is diluted with distilled water to get \(250\) ml of \(0.01\,M\) solution. The value of \(x\) in ml is
How many moles of urea is present in \(250\) ml of \(0.2\,M\) solution of it?
In which of the molecules is the lone pair : bond pair of electrons ratio \(2:3\)?
Consider the elements with atomic numbers \(Z=8,9,11,19\) and \(20\). The number of ionic compounds possible with the elements having these atomic numbers is
If \(n,l,m\) and \(s\) represent the symbols of quantum numbers, the impossible quantum number set for the electron in terms of \(n,l,m\) and \(s\) respectively is
The number of orbitals present in \(d\)-subshell is
The de Broglie wavelength associated with a particle of momentum \(p\) is
Match List-I with List-II \[ \begin{array}{|l|l|} \hline \textbf{Solutions} & \textbf{Explanation} \\ \hline (A) \; \text{Saturated solution} & (I) \; \text{Solution having two components.} \\ \hline (B) \; \text{Isotonic solutions} & (II) \; \text{A solution whose osmotic pressure is more than that of another.} \\ \hline (C) \; \text{Binary solution} & (III) \; \text{A solution which contains the maximum amount of solute that can be dissolved in a given amount of solvent at a given temperature.} \\ \hline (D) \; \text{Hypertonic solution} & (IV) \; \text{The solutions having the same osmotic pressure at a given temperature.} \\ \hline \end{array} \]
Which of the following is the correct electron configuration for the ion \(\text{Fe}^{3+}\)?
The synthesis of alkyl fluoride is best carried out by:
Assertion (A): The boiling points of alkyl halides decrease in the order: RI > RBr > RCl > RF.
Reason (R): The boiling points of alkyl chlorides, bromides and iodides are considerably higher than that of the hydrocarbon of comparable molecular mass.
What is the IUPAC name of [Pt(NH\(_3\))\(_2\)Cl\(_2\)]?
What is the color of Fe\(^{3+}\)(aq) ion?
The atomic number of Lanthanum is 57. Its electronic configuration will be ......
Select the correct statements for [Fe(CN)\(_6\)]\(^{3-}\) complex:
(A) Paramagnetic
(B) sp\(^3\)d\(^2\) hybridization
(C) Magnetic moment = 5.92 BM
(D) d\(^2\)sp\(^3\) hybridization
The following solutions were prepared by dissolving 1 g of solute in 1 L of the solution. Arrange the following solutions in decreasing order of their molarity: (A) Glucose (molar mass = 180 g mol$^{-1}$)
(B) NaOH (molar mass = 40 g mol$^{-1}$)
(C) NaCl (molar mass = 58.5 g mol$^{-1}$)
(D) KCl (molar mass = 7(4)5 g mol$^{-1}$)

Find the IUPAC name of the compound.