List of top Chemistry Questions

The mass of a photon with wavelength $ 3.6\,??$ is:
An electron with values $4, 2, -2$ and $+1/2$ for the set of four quantum numbers $ n,\,\,l,\,\,{{m}_{l}} $ and $ s $ respectively, belongs to:
Which of the following compounds is the strongest acid?
Which of the following compounds has the highest boiling point?
Which of the following acts as pickling agent?
Which is chemically most active non-metal?
Which does not react with Fehling solution?
Which is used to obtain salicylic acid from phenol?
Variable valency is a general feature of
Two rigid boxes containing different ideal gases are placed on a table. Box $A$ contains one mole of nitrogen at temperature $T_0$, while box $B$ contains one mole of helium at temperature $(7/3)\, T_0$. The boxes are then put into thermal contact with each other, and heat flows between them until the gases reach a common final temperature (Ignore the heat capacity of boxes). Then, the final temperature of the gases, $T_f$, in terms of/$T_0$ is :
Transition elements form a large number of coordination compounds because they have
What is the cell reaction occurring in Daniel cell (Galvanic cell)?
The percentage of soil volume occupied by pore space is called porosity of soil. It is minimum in:
The number of ether isomers possible for $C_{4}H_{10}O$ are:
The magnitude of any physical quantity
The lightest particle is:
The increasing order of stability of the following free radicals is:
The incorrect statement among the following is
The hybrid state of sulphur in SO$_3$ molecule is
The general molecular formula, which represents the homologous series of alkanols is :
The correct order of increasing acid strength of the compounds :
Solubility product of $ BaCl_{2}$ is $ 4\times 10^{-9}$ . Its solubility would be:
Solubility of iodine in water may be increased by adding:
Rate of a reaction can be expressed by Arrhenius equation as : $k = Ae^{-E/RT}$ In this equation, E represents :
Oxidation number of $ N $ in $ NH_{3}$ (hydrazoic acid) is: