List of top Chemistry Questions

Molecular nitrogen is less reactive than molecular oxygen. The bond length of $N_2$ is shorter than that of oxygen.
Change in colour of acidic solution of potassium dichromate by breath is used to test drunken drivers. Change in colour is due to complexation of alcohol with potassium dichromate.
An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If $T_i$ is the initial temperature and $T_f$ is the final temperature, which of the following statements is correct ?
Which one of the following sets of ions represents a collection of isoelectronic species ?
Cheese is an example of
Which one of the following is an example for heterogeneous catalysis?
Alizarin is a
When sodium nitrate is heated above $ \text{600}{{\,}^{\text{o}}}\text{C,} $ then:
Which of the following produces $ \text{C}{{\text{l}}_{2}} $ gas?
Lowest melting point chloride is:
$CH_3COCl$ does not react with
In $ \text{S}{{\text{O}}_{\text{2}}} $ hybridisation is:
$ \text{C}{{\text{H}}_{\text{3}}}\text{COCl} $ does not react with:
Which is extremely stable?
The stability of ferric ion is due to:
Which reagent can convert acetic acid into ethanol ?
When $ C{{H}_{3}}COOH $ reacts with $ C{{H}_{3}}-MgX: $
A cyclic hydrocarbon molecule has all the carbon and hydrogen is a single plane. All the carbon-carbon bonds are of same length, less than $ 1.54\,?? but more than $ 1.34 \,?? $ The C-C bond angle will be:
Acetals are
Which of the following is the most basic oxide?
$R - \underset{\overset{||}{O}}{C} - Cl + H_2 \ce{->[Pd/BaSO_4][S]} RCHO$, the name of reaction is :
How many ions will be furnished by $ CoCl_{3}\,.\,\,6NH_{3} $ ?
Reactivity order of following towards $ NaOE,\,EtOH $ :
Toluene by Etard reaction gives:
At high pressure van der Waals equation becomes :