List of top Chemistry Questions

Which among the following is a dihydric phenol?

Identify 'A' in the following reaction
C\(_2\)H\(_5\)OH + HCl \(\xrightarrow{A}\) C\(_2\)H\(_5\)Cl + H\(_2\)O

In colloidal dispersion of starch, the maximum possible size of starch particle is

Which among the following complexes is NOT a heteroleptic complex?

A metallic element crystallizes in simple cubic lattice. If edge length of the unit cell is 34Å, with density 8 g/cm\(^3\), what is the number of unit cells in 100 g of the metal? (Molar mass of metal = 108 g/mol)

Which of the following solution will have highest freezing point depression?

What is the unit of rate constant for the zero-order reaction?

Which of the following polymers is used to obtain adhesives?

Vapour pressure of solvent 'A' is 0.90 atm, when a non-volatile solute is added, vapour pressure drops to 0.60 atm. What is mole fraction of A in solution?

What is the oxidation state of sulphur in oil of vitriol?

Which of the following pairs of solution is isotonic?
(Molar mass of urea = 60, sucrose = 342 g mol\(^{-1}\))

Identify the increasing order of effective magnetic moment of following elements in their +2 oxidation state.
(Fe $(Z=26)$, Co $(Z=27)$, Ni $(Z=28)$, Cu $(Z=29)$)

Identify the product B in the following conversion.
\[ \text{Chlorobenzene} + \mathrm{H_2O} \xrightarrow[\text{Pressure}]{\mathrm{Cu},\,673\,K} A \xrightarrow[\;373\,K\;]{\text{conc. } \mathrm{H_2SO_4}} B \]

Which of the following equations has $\Delta_f H^\circ$ and $\Delta H^\circ$ same ?

What is the mass percentage of carbon in urea? (Molar mass of urea = \(60\,\text{g mol}^{-1}\))

Which among the following statements about terpenes is NOT true?

Which of the following pairs of aryl halides can NOT be prepared directly by electrophilic substitution?

Which of the following amines can not be prepared by Gabriel phthalimide synthesis?

Which of the following does NOT give yellow precipitate when reacted with (NaOH + I\(_2\)) mixture?

Propane nitrile on reaction with ethyl magnesium iodide in the presence of dry ether gives complex. This imine complex on acid hydrolysis forms

The common name of 1-Chloro-2, 2-dimethyl propane is

IUPAC name of isobutyl chloride is

In the reaction: \[ 2 \text{KClO}_3 (s) \rightarrow 2 \text{KCl} (s) + 3 \text{O}_2 (g) \quad \Delta H = -78 \, \text{kJ} \] If 33.6 L of oxygen gas is liberated at S.T.P., what is the mass of KClO\(_3\) produced?

What is the volume of 1 mole of a crystalline solid having unit cell edge length 16 \(\times\) 10\(^{-10}\) cm, if its unit cell contains 24 molecules?