List of top Chemistry Questions asked in UP Board XII

$H_2O$ is a liquid while $H_2S$ is a gas. Why?
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?
The unit of velocity constant for first order reactions is:
The concentration unit independent of temperature is:
Which of the following base is not present in DNA?
Benzyl alcohol is obtained from benzaldehyde by –
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
Write chemical equation for the preparation of ozone and its three oxidizing properties.
What is Aqua Regia? What happens when aqua regia reacts with (i) Gold, and (ii) Platinum.
Write the chemical equation of the reaction of glucose with bromine water.
Write a short note on Acetylation.
Differentiate between Lyophilic and Lyophobic colloids.
Write Nernst equation and its one application.
Write a short note on IUPAC system of nomenclature of coordination compounds.
Write a short note on denaturation of proteins.
How many primary alcoholic groups are present in glucose?
Define packing efficiency.
Explain Schottky defect.
Define packing efficiency.
Find out the oxidation number of Copper (Cu) in the following coordination compound: [Cu(NH$_3$)$_4$]SO$_4$.