List of top Chemistry Questions

Percentage of free space in body centred cubic (bcc) unit cell is

Of the isomeric hexanes, the isomers that give the minimum and maximum number of monochloro derivatives are respectively

Morphine obtained from opium is

Total volume of atoms present in a face centred cubic unit cell of a metal is ($r$ is atomic radius)

The change in entropy for the fusion of $1$ mole of ice is [mp of ice = $273\, K$, molar enthalpy of fusion for ice $ = 6.0\,kJ\,mol^{-1} $ ]

Methanol and ethanol are miscible in water due to

Metals have

Methanol and ethanol are miscible in water due to

Mercury is a liquid metal because

Identify the reaction for which $\Delta H\ne \Delta E.$

Hydrolysis of $NCl _{3}$ gives $NH _{3}$ and $X$. Which of the following is $X$ ?

Which of the following compounds when heated with $CO$ at $150^{\circ} C$ and $500$ atm pressure in presence of $BF _{3}$ forms ethyl propionate ?

When acetaldehyde is heated with Fehling solution, a red precipitate is formed. Which of the following is that?

Which of the products is formed when acetone is reacted with barium hydroxide solution?

What is the correct order of occurrence ($\%$ by weight) in air of $Ne , Ar$ and $Kr$ ?

Which of the following is added to chloroform to slow down its aerial oxidation in presence of light?

A solution of an acid has $\left[ H ^{+}\right]=2 \times 10^{-5}$. Find out the concentration of $OH ^{-}$ions.

The disperse phase, dispersion medium and nature of colloidal solution (lyophilic or lyophobic) of 'gold sol' respectively, are

From Williamson's synthesis preparation of which of the following is possible?

$ t- $ butyl chloride preferably undergo hydrolysis by

$ A\,\,0.5\,\,g/L $ solution of glucose is found to be isotonic with a $ 2.5\,\,g/L $ solution of an organic compound. What will be the molecular weight of that organic compound?

What is the equation for the equilibrium constant $ ({{K}_{c}}) $ for the following reaction? $ \frac{1}{2}A(g)+\frac{1}{3}B(g)\frac{2}{3}C(g) $

What is the electrode potential (in $ V $ ) of the following electrode at $ {{25}^{o}}C $ ? $ N{{i}^{2+}}(0.1\,\,M)|Ni(s) $ (Standard reaction potential of $ N{{i}^{2+}}|Ni $ is $ -0.25\,\,V,\,\,\frac{2.303RT}{F}=0.06) $

What is the wavelength (in $ m $ ) of a particle of mass $ 6.62\times {{10}^{-29}}g $ moving with a velocity of $ {{10}^{3}}\,\,m{{s}^{-1}} $ ?

Calculate the concentration of $NaOH$ solution in g/ml. which has the same normality as that of a solution of $HCl$ of concentration $0.04 \,g/ml$