List of top Chemistry Questions

If $V$ is the volume of one molecule of gas under given conditions, the van der Waal?s constant $b$ is

Consider the reactions (A) $H _{2} O _{2}+2 HI \longrightarrow I _{2}+2 H _{2} O$ (B) $HOCl + H _{2} O _{2} \longrightarrow H _{3} O ^{+}+ Cl ^{-}+ O _{2}$ Which of the following statements is correct about $H _{2} O _{2}$ with reference to these reactions? Hydrogen peroxide is ____

Which of the following is strongest nucleophile

Which of the following element do not form complex with EDTA?

Beryllium shows diagonal relationship with aluminium. Which of the following similarity is incorrect ?

If the Planck?s constant $h = 6.6 \times 10^{-34} \, Js$, the de Broglie wavelength of a particle having momentum of $3.3 \times 10^{-24} \, kg \, ms^{-1}$ will be

The rate constant of a reaction is $1.5 \times 10^{-3}$ at $25^{\circ} C$ and $2.1 \times 10^{-2}$ at $60^{\circ} C$. The activation energy is

Which of the following is the correct and increasing order of lone pair of electrons on the central atom?

For the reaction taking place at certain temperature ${NH_2 COONH_4 (s) <=> 2NH_3 (g) + CO_2 (g) }$, if equilibrium pressure is 3X bar then $ \Delta_G$ would be

The pH of $0.1\, M$ solution of the following salts increases in the order :

Chloroform, $CHCl _{3}$, boils at $61.7^{\circ} C$. If the $K_{b}$ for chloroform is $3.63^{\circ} C / molal$, what is the boiling point of a solution of $15.0\, kg$ of $CHCl _{3}$ and $0.616\, kg$ of acenaphthalene, $C _{12} H _{10}$ ?

Following are colours shown by some alkaline earth metals in flame test. Which of the following are not correctly matched?

Amongst the elements with following electronic configurations, which one of them may have the highest ionization energy?

pH of a $0.1\, M$ monobasic acid is found to be $2$. Hence, its osmotic pressure at a given temperature $TK$ is

If osmotic pressure of 4% (w/v) solution of sucrose is same as 2% (w/v) solution of 'X' find molecular mass of X.

For $1$ molal aqueous solution of the following compounds, which one will show the highest freezing point ?

The trans-alkenes are formed by the reduction of alkynes with :

Aniline is a resonance hybrid of five structures and where do you find the maximum electron density in those structures?

What is the name of six membered cyclic structure of glucose?

Thermoplastic can be reused because of?

In the reaction shown below, the major product formed is

Hydrolysis of diazonium salt produces

Which of the following amino acid is achiral?

Which mechanism involves heterolytic fission?

When phenol is treated with CHCl₃ and NaOH, the product formed is