List of top Chemistry Questions

Aniline does not undergo Friedel-Crafts reaction. Friedel-Crafts reaction is an electrophilic substitution reaction.
4 g of a hydrated crystal of formula AxH$_2$O has 0.8 g of water. If the molar mass of the anhydrous crystal (A) is 144 g mol$^{-1}$, x value is
Meso compounds do not show optical activity because
Adsorption theory is applicable for
Which of the following does not give oxygen on heating ?
Identify the correct order of solubility in aqueous medium :
Which of the following does not give oxygen on heating ?
Which of the following statements about the interstitial compounds is incorrect ?
Which of the following structure is similar to graphite?
Which one of the following sets of ions represents the collection of isoelectronic species ?
The process of zone refining is used in the purification of
The values of $K_{sp}$ of $CaCO_3$ and $CaC_2O_4$ are $4.7 \times 10^{-9}$ and $1.3 \times 10^{-9}$ respectively at $25�C$. If the mixture of these two is washed with water, what is the concentration of $Ca^{2+}$ ions in water?
An example for a neutral buffer is
Which of the following cations will have minimum flocculation value for arsenic sulphide sol ?
The stability of a Lyophobic colloid is due to
Mesomeric effect involves
$XeF_2$ is isostructural with:
Which one of the following molecules contains no $\pi$ bond ?
Which of the following is a polar molecule ?
What is the density of $N_2$ gas at $227°C$ and 5.00 atm. pressure ? (R = 0.082 L Atm $K^{-1} mol^{-1}$)
Hybridised states of carbon in Graphite and Diamond are respectively
A group of atoms can function as a ligand only when
Acetone and Propanal are
An alkyl bromide $(X)$ reacts with Sodium in ether to form $4, 5$ -diethyl octane, the compound X is
Which of the following is not a colligative property ?