List of top Chemistry Questions

The oxidation number of nitrogen atom in MH4NO3 are
When the same quantity of heat is absorbed by a system at two different temperatures T1​ and T2​, such that T1​>T2​, change in entropies are ΔS1​ and ΔS2​ respectively. Then
The formal charge on central oxygen atom in ozone is
The IUPAC name of the complex $[Pt(NH_3)_2Cl(NH_2CH_3)]Cl$ is :
Which one of the following layers of a metallic compound can be formed on electric wire as insulator during rainy season and causes the power supply to our home from the electric pole to be interrupted?
The chemical equation BaCl2 + Na2SO4→BaSO 4 + 2NaCl is an example for which type of the following chemical reactions? 
The volume occupied by 10 grams of hydrogen gas at STP is
As per Moeller chart, the correct ascending order of their energies of the following orbitals is
The names of the sub-shells present in M shell (n= 3) are
The number of water molecules present in one formula unit of gypsum is
Which one of the following types of medicine is used for treating indigestion?
The colour of methyl orange in alkaline medium (basic) is
The chemical name of baking soda is
A thin layer of 'X' metal is used as galvanizing on iron surface to protect from rusting of iron. The name of X metal is
CH3COOH is an organic
Which one of the following compound hydrocarbons can show isomerism?
C2H5OH on oxidation with alkaline KMnO4 gives the compound A, which on further oxidation gives the compound B. The names of A, B respectively are
The IUPAC name of the compound CH3---CH2--CH=CH2 is
The molecular formula of cyclopentane is
Graphite is a good conductor of electricity because of
The name of complex ion formed when Ag2S is dissolved in KCN solution is
The most suitable method for concentration of sulphide ore is
Match the following :
Ore  Formula
AFe3O4IMagnesite 
BMgCO3IIMagnetite
CZnSIIICinnabar
DHg2SIVZinc Blende
Which of the molecules has highest bond length ('A')?
The shape of methane molecule is