List of practice Questions

An intrinsic semiconductor has a resistivity of $ 0.50 \Omega\, m $ at room temperature. Find the intrinsic carrier concentration, if the mobilities of electrons and holes are $ 0.39\, m^2/Volt $ , and $ 0.11 m^2/Volt \,sec $ respectively
An artificial satellite moving in a circular orbit at a distance $h$ from the centre of the earth has a total energy $E_0$. Its potential energy is
Example of electrophile is
Splitting of spectral lines in electric field is called
Arrange the following acids in order of their increasing acidity.
Which of the following are isoelectronic molecules?
The following reagent is used for introducing a formyl group $ (?CHO) $ into the benzene ring
An alkyl cyanide forms an amide when it is treated with
The emf of the cell involving the following reaction $ {2Ag^+ + H_2 -> 2Ag + 2H^+} $ is $ 0.80 \,Volt $ . The standard oxidation potential of silver electrode is
Among the following, which one is not a deuterostome?
Among the following the ambidentate ligand is
$AgNO_3$ (aqueous) was added to an aqueous $KCl$ solution gradually and the conductivity of the solution was measured. The plot of conductance $\Lambda$ versus the volume of $AgNO_3$ is
Age of fishes is also known as
Aestivation found in pea flowers is
Amongst the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is/are
Extra pure $N_2$ can be obtained by heating
Oxidation states of the metal in the minerals haematite and magnetite, respectively, are
Passing $H_2 S$ gas into a mixture of $Mn^{2+}, Ni^{2+}, Cu^{2+}$ and $Hg^{2+}$ ions in an acidified aqueous solution precipitates
The correct statement(s) pertaining to the adsorption of a gas on a solid surface is (are)
According to five kingdom classification bacteria belong to
Vertebrate brain differentiates from
Animals of class-Mammalia have
Secondary body cavity with segmented mesodermal lining is called
A tree that has strong erect stem with hollow intemodes and solid nodes is known as
Pedology refers to