List of top Chemistry Questions

The process of burning carbon or carbon compounds in excess of oxygen is called _____.
General formula of Alkynes is _____.
The electronic configuration of chlorine is
Unsaturated hydrocarbons generally undergo _____ reactions.
Molecular formula of the compound formed by the combination of atoms A and B with 2 and 7 valence electrons in third orbit is ____.
Which one of the following elements is a noble gas?
The bond angle in ammonia molecule is ____.
Which one of the following periodic properties increases from left to right in periods?
The number of elements present in the second period of modern periodic table is
The correct order of penetration power of the orbitals is
Which family does sodium belong to?
Which method is used to concentrate sulphide ores?
In the modern periodic table, \(3^{rd}\) period ends with _____.
For a 1st order change R \(\rightarrow\) P, the concentration of Reactant R changes from 0.1 M to 0.025 M in 40 minutes. The rate of reaction when the concentration of R is 0.01 M is
Which metal is extracted by electrolysis?
pH of a neutral solution at 25°C is: ____.
The IUPAC name of CH₃–CH₂–CHO is: ____.
The work done in increasing the radius of a soap bubble from R to 2R is W. The work done in further increasing its radius from 2R to 3R will be:
In NO₃⁻ ion, the number of bond pairs and lone pairs of electrons on nitrogen atom are
The wavelength of the radiation emitted, when an electron falls from infinity to stationary state 1, would be (Rydberg constant = 1.097 × 10⁷ m⁻¹)
Alkali metals are powerful reducing agents because
In which of the compounds does 'manganese' exhibit highest oxidation number?
A balloon filled with an air sample occupies 3 L volume at 35°C. On lowering the temperature to T, the volume decreases to 2.5 L. The temperature T is? [Assume p-constant]
Which among the following is an ambidentate ligand?
A solution of 8 g of a certain organic compound in 2 dm³ water develops osmotic pressure 0.6 atm at 300 K. Calculate the molar mass of compound. [R = 0.082 atm dm^3 K^{-1} mol^{-1}]