List of practice Questions

The oxidation number of iron in $Fe_3O_4$ is
The oxidation number of $Cr\, in\, CrO_5$ is
The oxidation number of carbon in $ {H_2C_2O_4}$
The oxidation number of C in $CH_4, CH_3Cl. CH_2Cl_2, CHCl_3 \,and \,CCl_4$ is respectively
The oxidation number of C in sucrose $C_{12}H_{22}O_{11}$ is
The oxidation number of carbon in $ {CH_2O}$ is
The owner of a milk store finds that he can sell $980\,L$ of milk each week at ?
The oxidation number and covalency of sulphur in sulphur molecule $(S_8) $are
The oxidation number of Ag in Tollen's reagent is
The oxidation number of C and in HCN and HNC respectively are
The osmotic pressure of 1 m solution at 27 $^\circ$C is
The osmotic pressure of 5% (mass-volume)solution of cane sugar at 150$^\circ$C (mol. mass of sugar = 342) is
The outer layer of vacuole is called
The outer sphere of a spherical air capacitor is earthed. For increasing its capacitance
The organelles which take part in photo-respiration are
The origin of lateral roots is from
The osmotic pressure of 0.2 molar solution of urea at 300 K (R = 0.082 litre atm $mol^{-1} K^{-1})$ is
The order of size of nucleus and Bohr's radius of an atom respectively are
The order of stability of free radical is
The ore of aluminium is
The organ of Corti is a structure present in
The order of rate of hydrolysis of alkyl halides: $1^{\circ}, 2^{\circ}, 3^{\circ}$ and $CH_3X$ by $S_N2$ pathway is
The order of reactivity of $CH_{3}CHO, CH_{3}COC_{2}H_{5}$ and $CH_{3}COCH_{3}$ is
The order of reactivity of the following alcohols with halogen acids is
The order of reactivity of various alkyl halides towards nucleophilic substitution follows the order