List of top Chemistry Questions

Which among the following is a dihydric phenol?
For the reaction \(4\text{NH}_3 + 5\text{O}_2 \rightarrow 4\text{NO} + 6\text{H}_2\text{O}\), if the rate of disappearance of \(\text{NH}_3\) is \(3.6 \times 10^{-3}\,\text{M s}^{-1}\), what is the rate of formation of water?
Osmotic pressure of a one molar solution at \(27^\circ\text{C}\) is (given \(R = 0.082\)).
Which of the following compounds is obtained when benzoic acid is treated with concentrated \(\text{H}_2\text{SO}_4\) and concentrated \(\text{HNO}_3\)?
What is the molar conductivity at infinite dilution of \(\text{CaCl}_2\), if the molar conductivity of \(\text{Ca}^{2+}\) ion and \(\text{Cl}^-\) ion at infinite dilution is \(119\) and \(71~\Omega^{-1}\text{cm}^2\text{mol}^{-1}\) respectively?
Which among the following polymer is used to make crockeries?
Lithium crystallises into a body centered cubic structure. What is the radius of lithium if the edge length of its unit cell is \(351~\text{pm}\)?
What type of hybridisation results in tetrahedral geometry?
Identify product B obtained in the following reaction:
\[ \text{CH}_3-\text{CH}_3 \;\xrightarrow[\Delta]{\text{HNO}_2}\; A \;\xrightarrow[\text{ether}]{\text{LiAlH}_4}\; B \]
Which among the following reagents is used for conversion of glucose to glucosime?
What is the IUPAC name of mesityl oxide?
Among the following isomeric amines, an amine having the highest boiling point is
What is the product formed when bauxite ore is treated with sodium hydroxide?
What is the symbol of the element if its atomic number is 116?
What is the relative rate of \( \text{S}_\text{N}1 \) reaction for \( (\text{CH}_3)_2\text{CH–Br} \)?
Identify the correct decreasing order of ionic radii of lanthanoids.
When butan-2-ol is dehydrated using sulphuric acid, the concentration of acid and temperature needed respectively is
Which among the following complexes is heteroleptic and cationic in nature?
Which type of overlap is involved in the formation of O–H bonds in a water molecule?
The compound which causes antidepressant action on the central nervous system is
A certain mass of a gas occupies a volume of \(2~\text{dm}^3\) at STP. At what temperature will the volume of the gas become double, keeping the pressure constant?
What is the cell constant of \( \frac{N}{10} \) KCl solution at \(25^\circ\text{C}\), if conductivity and resistance of the solution are \(0.0112~\Omega^{-1}\text{cm}^{-1}\) and \(55.0~\Omega\) respectively?
Which of the following oxyacids of chlorine does not contain lone pair of electrons on chlorine atom?
The SI unit of pressure is
What is the value of \(\Delta H\) for the formation of ethanol from ethene gas and liquid water from the following data?
(i) \(\text{C}_2\text{H}_4(g) + 3\text{O}_2(g) \rightarrow 2\text{CO}_2(g) + 2\text{H}_2\text{O}(l) \quad \Delta H = -1368 \, \text{kJ}\)
(ii) \(\text{C}_2\text{H}_4(g) + 3\text{O}_2(g) \rightarrow 2\text{CO}_2(g) + 2\text{H}_2\text{O}(g) \quad \Delta H = 1410 \, \text{kJ}\)