List of top Questions asked in Bihar Board Class XII

Write the electronic configurations of Kr (Z = 36) and Xe (Z = 54).
Discuss the utility of DNA fingerprinting.
Give one example of each of the following:
(i) Synthetic polymer
(ii) Condensation polymer
The IUPAC name of \( \text{CH}_3\text{CH}_2\text{CH}_2\text{OH} \) is
What are the main differences between physical adsorption and chemical adsorption?
What is Brownian movement?
Discuss electrochemical principle regarding rusting of iron.
What is the effect of dilution on molar conductance?
What is mole fraction?
Write Raoult's law of relative lowering of vapour pressure.
What are network solids? Give an example.
\( \text{C}_2\text{H}_5\text{Br} + \text{NaOH} \rightarrow \text{C}_2\text{H}_5\text{OH} + \text{NaBr} \) is an example of which of the following types of reaction?
Which of the following alkyl halides is hydrolyzed by \( S_N 1 \) mechanism?
Chloroform on reduction with Zn and water gives
When ethyl bromide is treated with dry silver oxide, then we get
Lucas reagent is
Butan-2-ol is a
Which of the following is a tertiary alcohol?
Which of the following has the highest bond energy?
The oxidation state of Ni in \( \text{Ni(CO)_4 \) is}
Which of the following has the highest molar electrical conductance in aqueous solution?
The IUPAC name of \( K_3[\text{Fe(CN)_6] \) is}
Vitamin B12 contains
The IUPAC name of \( \text{CH}_3\text{CH}_2\text{CH}_2\text{Cl} \) is
Which of the following metals is generally found in free state?