List of top Chemistry Questions

$H_2O$ is a liquid while $H_2S$ is a gas. Why?
Define Osmotic pressure. How will you show that Osmotic pressure is a colligative property?
Write a short note on primary and secondary structures of proteins.
Hinsberg’s reagent is –
The crystal system having dimensions $a \neq b \neq c$ and $\alpha = \beta = \gamma = 90^\circ$ is:
What is Schottky defect? What is the effect of the presence of Schottky defect on the density of lattice?
Which of the following base is not present in DNA?
Benzyl alcohol is obtained from benzaldehyde by –
The unit of velocity constant for first order reactions is:
The concentration unit independent of temperature is:
Write a short note on Nucleophilic substitution reactions in haloalkanes.
How will you obtain the following from Chlorobenzene? (Write only chemical equations) (i) Picric Acid
(ii) Dichlorobenzene
(iii) Chlorobenzene Sulphonic Acid
Write chemical equations of two methods of preparation of monohydric alcohol and also write chemical equation of the reactions of ethyl alcohol with conc. sulphuric acid (H$_2$SO$_4$) at different temperatures.
Write short notes on the following: (i) Reimer–Tiemann reaction
(ii) Kolbe reaction
What is Aqua Regia? What happens when aqua regia reacts with (i) Gold, and (ii) Platinum.
Write chemical equation for the preparation of ozone and its three oxidizing properties.
Write the chemical equation of the reaction of glucose with bromine water.
Write four characteristics of transition elements.
Write Nernst equation and its one application.
Differentiate between Lyophilic and Lyophobic colloids.
Write a short note on Acetylation.
Write a short note on denaturation of proteins.
Write a short note on IUPAC system of nomenclature of coordination compounds.
Define packing efficiency.
How many primary alcoholic groups are present in glucose?