List of top Chemistry Questions

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?
Vinyl chloride reacts with $ HCl $ to form:
The compound that is not a Lewis acid, is
The co-ordination number of bcc crystal is:
Night blindness is caused by the deficiency of:
$ C{{H}_{3}}C{{H}_{2}}COOH\xrightarrow[Fe]{C{{l}_{2}}}X\xrightarrow{alc.\,KOH}Y, $ the compound $ Y $ is:
Butyne-1 and butyne-2 can be distinguished by:
As a result of osmosis, the volume of concentrate solution:
Which set has the same number of unpaired electrons in their ground state?
Lead pipes are not suitable for drinking water because:
Although CO is neutral gas, yet it shows acidic nature or reaction with: (at high pressure and temperature)
The most dangerous reaction of an acid is with the metal:
In which of the following compounds, the central atom has not completed octet?
The de-Broglie wavelength of a particle with mass 1 g and velocity 100 m/s is
The uncertainty in momentum of an electron is $1\times 10^{-5} kg m/s.$ The uncertainty in its position will be (Given, $h = 6.62 \times 10^{-34} kg m^2/s)$
p-orbitals in a given shell can accommodate upto:
Which of the following has minimum ionization energy?
The number of atoms in 4.25 g of $NH_3$ is approximately
The Lassaignes solution of an organic compound with nitrogen; sulphur and chlorine contains:
A vessel contains equal volumes of $ \text{S}{{\text{O}}_{\text{2}}} $ and $ \text{C}{{\text{H}}_{4}}. $ Through a small hole the gases effused into vacuum. After 200 seconds the total volume is reduced to half. What is the ratio of $ \text{S}{{\text{O}}_{\text{2}}} $ and $ \text{C}{{\text{H}}_{\text{4}}} $ remaining in the vessel?
Which of the following form of sulphur can be prepared by pouring liquid sulphur into cold water?
The boiling points of the following hydrides follow the order of
Metals having $ \text{n}{{\text{s}}^{\text{1}}} $ the valence electronic configuration: