List of top Chemistry Questions

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

Ammonia can be dried by

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?

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?

0 .15 g of a substance dissolved in 15 g of a solvent higher by 0.216$^\circ$C than that of the pure solvent. Find out the molecular weight of the substance. $(K_b\, for\, solvent \, is\, 2.16 ^\circ C)$

The number of atoms in 4.25 g of $NH_3$ is approximately

The oxidation number of phosphorus in pyrophosphoric acid is

The de-Broglie wavelength of a particle with mass 1 g and velocity 100 m/s is

Who modified Bohr's theory by introducing elliptical orbits for electron path?