List of top Chemistry Questions

During the preparation of Mohr’s salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of Fe2+ ion?
The plot of osmotic pressure II) vs concentration (mol L–1 ) for a solution gives a straight line with slope 25.73 L bar mol–1 . The temperature at which the osmotic pressure measurement is done is
(Use R = 0.083 L bar mol–1 K–1 )
Law of octaves was proposed by
Bond angle in BeCl\(_2\) molecule is
Which one of the following atoms is smaller in size?
Number of elements present in the sixth period of the modern periodic table
Element with atomic number 17 belongs to
Ionization energy along a period from left to right generally
Polar covalent bond present in
Number of bond pairs and lone pairs in the valence shell of nitrogen in NH\(_3\)
Oxygen gains ____________________ electrons during the chemical changes.
The hydrocarbons containing only single bonds between carbon atoms are called
The number of sigma and \(\pi\)-bonds in ethyne molecule:
If the hydrogen atom of -COOH gets replaced by 'R' (alkyl group) _______________ are obtained.
Which one of the following is a ketone?
Which of the following is an unsaturated compound?
Double bond present in
The final compound formed when methane reacts with chlorine in the presence of sunlight is
The process of conversion of starches and sugars to C2H5OH is called
What is the symbol used in a chemical equation to represent the gas evolved in a reaction?
Number of unpaired electrons present in carbon atom is
The process of dissolving acid or base in water is
Quantum mechanical model of the atom was developed by
The metal that occurs in the free form (native) is
Galena is an ore of