List of top Questions asked in Bihar Board Class XII

The important oxide ore of iron is
In which of the following is the oxidation state of oxygen \(+2\)?
Which of the following is a radioactive noble gas?
By which of the following noble gases have the maximum number of compounds been formed?
Which of the following is a polar compound?
Which of the following conducts electricity in a solution?
The standard electrode potentials of metals A, B, C and D are $-3.05\,\mathrm{V}$, $-1.66\,\mathrm{V}$, $-0.40\,\mathrm{V}$ and $+0.8\,\mathrm{V}$ respectively. Which of the following would have the highest reducing power?
The cell constant of a conductivity cell is
The rate of the reaction $2A + B \rightarrow C$ can be represented by which of the following?
The rate law of a reaction is $\text{Rate}=k[A][B]^2$. If the concentration of $B$ is trebled keeping $[A]$ constant, the rate becomes
The IUPAC name of CH$_3$–CH(NH$_2$)–CH$_3$ is:
Primary amine on reaction with Grignard reagent gives which of the following?
Which of the following is the most basic?
Which of the following is Hinsberg reagent?
Which of the following is formed when acetamide reacts with Br$_2$/KOH?
Which of the following is deposited at cathode on electrolysis of aqueous NaCl solution?
Which of the following gives acetone on oxidation?
The functional group of a secondary amine is
The coordination number of a metal crystallizing in a hexagonal close packed (hcp) structure is:
Which of the following is not an ideal solution?
Which of the following can pass through semi-permeable membrane?
If 18 g of glucose is dissolved in 1000 g of solvent, then the solution is said to be:
Which of the following will have highest boiling point?
Chloroform on reduction with zinc and water gives
Which of the following will not give iodoform test?