List of top Chemistry Questions

Which of the following is paramagnetic?

Which of the following has a tendency for covalent compound formation?

Oxidation state of sulphur in $S _{8}, H _{2} S$ and $S _{2} F _{2}$ is

Gas equation PV = nRT is obeyed by

Carbon atoms in benzene molecule are inclined at an angle of.

A fruity smell is obtained by the reaction of ethanol with

Which of the following has the highest nucleophilicity?

Which of the following, has the most acidic hydrogen?

The order of reactivities of the following alkyl halides for a $S_N$2 reaction is-

The compressibility of a gas is less than unity at STP. Therefore,

Propyne and propene can be distinguished by

For the equilibrium,${ MgCO_3(s) <=>[\triangle] MgO(s)+CO_2 (g)} $ which of the following expressions is correct ?

Benzoyl chloride is prepared from benzoic acid by

At 100$^\circ$C and 1 atm. if the density of liquid water is 1.0 g $cm^{-3}$ and that of water vapour is 0.0006 g $cm^{-3}$, then the volume occupied by water molecules in 1 litre of steam at that temperature

Amongst $H_2O , H_2S, H_2Se$ and $H_2Te,$ the 1one with the highest boiling point is

The number of $P - O - P$ bonds in cyclic metaphosphoric acid is

Amongst the following, identify the species with an atom in + 6 oxidation state

Ammonia can be dried by

The rms velocity of hydrogen is $\sqrt{7}$ times the rms velocity of nitrogen. If T is the temperature of the gas

Which of the following has maximum hydration energy?

Which species does not exist?

What is the weight of 1 mole atoms of Ag?

What is the pH for a neutral solution at the body temperature $ \left( 38{}^\circ C \right) $ ?

What is the end product in the following reaction? $ {{C}_{2}}{{H}_{5}}N{{H}_{2}}\xrightarrow{HN{{O}_{2}}}A\xrightarrow{PC{{l}_{5}}}B\xrightarrow{N{{H}_{3}}}C $

What is obtained, when aniline is sulphonated?