List of top Chemistry Questions

Which of the following pair of atomic numbers indicates the s-block elements?
Maximum number of electrons present in an orbital of atom is
Which one of the following metal occurs in the native form?
The electronic configuration of an element is 2, 8, 6. Which one of the following element is chemically similar to the above element?
Washing Soda is used in ____ .
The element which belongs to 3rd period and 14th group in Modern periodic table is
Bases can give _____ ions in water.
The more reactive metal in the activity series is
Identify the salt in the following.
The orbital with more penetration power towards nucleus is
Which is the least electronegative element among the following?
The carbonate ore among the following is
Four quantum numbers of valence electron of sodium
Colour of anhydrous \(CuSO_4\) is
Mixing acid to water is
Bleaching Powder is formed from
The classification of elements which is based on atomic number is
Which of the following electronic configuration violating Hund's rule ?
Which one of the following electromagnetic radiation has more frequency?
Order of energy of orbitals
The total number of atomic orbitals in third shell of an atom
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?