List of top Chemistry Questions

Write preparation of glucose from sucrose.
While doing qualitative analysis in chemistry lab, Abhishek added yellow coloured potassium chromate solution into a test tube. He was surprised to see the colour of the solution changing immediately to orange. He realised that the test tube was not clean and contained a few drops of some liquid. Which of the following substances will be the most likely liquid to be present in the test tube before adding potassium chromate solution?
What do you understand by order of a reaction? Calculate the total order of those reactions which have velocity equations:
(i) Velocity \( = K[A]^{1/2}[B]^{3/2} \)
(ii) Velocity \( = K[A]^3[B]^{-1} \)
Tertiary alkyl halides are least reactive towards SN2 reaction.
Williamson’s synthesis of preparing dimethyl ether is a/an:
The IUPAC name of complex compound [Co(NH$_3$)$_6$]Cl$_3$ is
Write the products of the following reactions:
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Hydrogen atom of chloroform is acidic in nature.
In compound (X), hyperconjugation is present and in (Y), resonance effect is present. What are X and Y, respectively?
Which of the following compounds can be coloured?
Explain Raoult's Law. The vapour pressure of chloroform (\( \text{CHCl}_3 \)) and dichloromethane (\( \text{CH}_2\text{Cl}_2 \)) are 200 mm Hg and 4.5 mm Hg respectively at 298 K. Calculate the vapour pressure of the solution formed by mixing 51 g of \( \text{CHCl}_3 \) and 20 g of \( \text{CH}_2\text{Cl}_2 \) at 298 K.
Match each complex to its geometry:
Pick the reaction that shows the Gattermann-Koch process:
Which of these separation technique pairs is correctly matched?
Which aniline derivative is a commonly used dental local anaesthetic?
If a compound has octahedral geometry, what is the central atom’s hybridization?
Which metal reacts most with dilute acid to displace hydrogen?
Highest oxidation numbers for chromium and manganese:
Which ligand is stronger based on the spectrochemical series?
When phenol is treated with NaOH, CO_2 (heat), and then acidified, what results?
Which element releases electrons most easily (lowest ionization enthalpy)?
Choose the correct ascending order of ionization energy for Zn, Cu, Ag:
What is the bond order for diatomic carbon according to molecular orbital theory?
Rank elements Li, Be, B, C in increasing first ionization energy:
Which compound’s common name is cumene?