List of top Chemistry Questions

The hybridizations of atomic orbitals of nitrogen in $NO _{2}^{+}, NO _{3}^{-}$ and $NH _{4}^{+}$ respectively are
The rate of a first order reaction is $0.04 mol \, l^{-1} \, s^{-1}$ at 10 seconds and $0.03 \, mol \, l^{-1} \, s^{-1}$ at 20 seconds after initiation of the reaction. The half-life period of the reaction is :
Match items of Column I with the items of Column II and assign the correct code:
The suspension of slaked lime in water is known as
The highest DDT concentration in aquatic food chain shall occur in
One mole of an ideal monatomic gas undergoes a process described by the equation $PV^{3}=$ constant. The heat capacity of the gas during this process is -
Natural rubber has :
$MY$ and $NY_3$, two nearly insoluble salts, have the same $K_{SP}$ values of $6.2 \times 10^{-13}$ at room temperature. Which statement would be true in regard to $MY$ and $NY_3$ ?
Which of the following statement about hydrogen is incorrect ?
Which of the following biphenyls is optically active ?
Which among the given molecules can exhibit tautomerism?
tautomerism
Lithium has a $bcc$ structure. Its density is $530 \, kg \, m^{-3}$ and its atomic mass is $6.94 \, g \, mol^{-1}$. Calculate the edge length of a unit cell of Lithium metal. ($NA = 6.02 \times 10^{23} \, mol^{-1}$)
In which of the following molecules, all atoms are coplanar ?
In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion $(Ca^{2+})$ and fluoride ion $(F^-)$ are
Which of the following statements is not correct?
Which of the following statement about hydrogen is incorrect ?
Boric acid is an acid because its molecule
The electronic configurations of Eu (Atomic No. 63), Gd(Atomic No. 64) and Tb (Atomic No. 65) are:
The reaction can be classified as:
The reaction can be classified
Which of the following pairs of d-orbitals will have electron density along the axes?
Which one of the following compounds shows the presence of intramolecular hydrogen bond?
Which one of the following is incorrect for ideal solution ?
Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because
When copper is heated with conc. $HNO_3$ it produces :
Two electrons in the same atomic orbital can be distinguished by their