List of top Chemistry Questions

The more reactive metal in the activity series is
Which of the following is a non metal?
Washing Soda is used in ____ .
Maximum number of electrons present in an orbital of atom is
Which of the following pair of atomic numbers indicates the s-block elements?
Which one of the following electromagnetic radiation has more frequency?
Colour of anhydrous \(CuSO_4\) is
The total number of atomic orbitals in third shell of an atom
Order of energy of orbitals
Mixing acid to water is
Bleaching Powder is formed from
Four quantum numbers of valence electron of sodium
Which of the following electronic configuration violating Hund's rule ?
The classification of elements which is based on atomic number is
Which of the following artificial sweeteners can be used in soft drinks only?
The equilibrium constant, \(K_C\) for \(3C_2H_2(g) \rightleftharpoons C_6H_6(g)\) is 4 L\(^2\)mol\(^{-2}\). If the equilibrium concentration of benzene is 0.5 mol/L, then what is the value of concentration of ethylene?
A commercially sold conc. HCl is 35% HCl by mass. If the density of this commercial acid is 1.46 g/mL, the molarity of this solution is :
(Atomic mass : Cl = 35.5 amu, H = 1 amu)

Which among the following reactions does NOT form alkyl halides?

Which property of CO2 makes it biologically and geo-Chemically important?
In which of the following changes, entropy decreases?
Which of the following is highly basic?
Which of the following gases is responsible for acid rain?
The correct condition for physical adsorption is
Which of the following statement is incorrect for \( \mathrm{H_2O_2} \) structure?
The oxidation state of nickel in [Ni(CO)_4] is