List of top Chemistry Questions

Which of the following has the least atomic radius?
Identify the major product formed when Ethyl Bromide reacts with alcoholic KOH.
What is the energy of a photon of frequency \( \nu \)?
What is the SI unit of molar conductivity?
What is the oxidation state of Phosphorus in \(H_3PO_4\)?
Identify the product when Phenol reacts with Bromine water.
Which reagent is used in the Reimer--Tiemann reaction to convert phenol to salicylaldehyde?
Which one of the following elements is represented as Eka-silicon in Mendeleev's periodic table?
Uncertainty principle is valid for:
No two electrons in an atom can have the same set of quantum numbers. This is known as:
The number of electrons in one mole of methane (CH\(_4\)) is:
The elemental analysis of an organic compound gave:
C: 38.71%, H: 9.67%, O: 51.67%. What is the empirical formula of the compound?
On heating an aldehyde with Fehling's reagent, a reddish-brown precipitate is obtained due to the formation of:
Compound 'A' is obtained by the reaction of benzyl chloride with magnesium metal in dry ether followed by treatment with water. What is the compound 'A'?
The major product obtained in the dehydration of ethanol in the presence of \( \text{H}_2\text{SO}_4 \) at 413 K is:
Which of the following compounds has the highest boiling point?
What is the oxidation state of Phosphorus in \( H_3PO_4 \)?
A metal has BCC structure. Atomic radius \(=173\,\text{pm}\) and molar mass \(M=56\,\text{g mol}^{-1}\). The density of the metal is:
What is the difference in the oxidation number of Manganese (Mn) between \( \text{KMnO}_4 \) and \( \text{MnO}_2 \)?
Find the osmotic pressure of a \(0.1\,M\) glucose solution at \(27^\circ C\) \((R = 0.0821\,L\,atm\,mol^{-1}K^{-1})\).
Find the energy of a photon with a wavelength of \(4000\,\text{\AA}\). (Take \( h = 6.63 \times 10^{-34}\,\text{Js} \), \( c = 3 \times 10^8\,\text{m/s} \)).
Name the catalyst used in the manufacture of ammonia by Haber’s process.
Calculate the number of atoms per unit cell in a Face-Centered Cubic (FCC) crystal structure.
What is the ratio of the surface area of two soap bubbles if their radii are in the ratio \(2:3\)?
Calculate the de Broglie wavelength of an electron accelerated through a potential difference of \(100\,\text{V}\).