List of practice Questions

The number of moles of oxalate ions oxidized by one mole of permanganate ions in acidic medium is
Total number of geometrical isomers possible for the complexes [NiCl$_4$]$^{2-}$, [CoCl$_2$(NH$_3$)$_4$]$^+$, [Co(NH$_3$)$_3$(NO$_2$)$_3$] and [Co(NH$_3$)$_5$Cl]$^{2+}$ is
Match the following The correct answer is
Maltose on hydrolysis gives two monosaccharide units. The incorrect statement about the monosaccharides formed is
Identify the pair of drugs which act as antihistamines.
The half-life of a zero order reaction A $\rightarrow$ products, is 0.5 hour. The initial concentration of A is 4 mol L$^{-1}$. How much time (in hr) does it take for its concentration to come from 2.0 mol L$^{-1}$ to 1.0 mol L$^{-1}$?
Match the following The correct answer is
Observe the following statements Statement - I: The choice of reducing agent for the reduction of an oxide ore can be predicted by using Ellingham diagram, a plot of $\Delta G^\circ$ Vs T. Statement - II: According to Ellingham diagram, metal oxide with higher $\Delta G^\circ$ is more stable than the oxide with lower $\Delta G^\circ$. The correct answer is
Which one of the orders is correctly matched with the property mentioned against it?
Noble gas 'X' is used as a diluent for oxygen in modern diving apparatus and noble gas 'Y' is used mainly to provide an inert atmosphere in high temperature metallurgical processes. 'Y' and 'X' are respectively?
The dibasic oxoacid of phosphorus on disproportionation gives two products A and B. A and B are respectively
Which of the following is not an aromatic species?
In the estimation of nitrogen by Kjeldahl's method 0.933 g of an organic compound 'X' was analyzed. Ammonia evolved was absorbed in 60 mL of 0.1 M H$_2$SO$_4$. The unreacted acid requires 20 mL of 0.1 M NaOH for complete neutralization. The compound 'X' is
Which of the following is a least stable carbocation?
The incorrect statement about crystals with Schottky defect is
Two liquids 'A' and 'B' form an ideal solution. At 300 K, the vapour pressure of a solution containing 1 mole of 'A' and 3 moles of 'B' is 550 mm Hg. At the same temperature, if one more mole of 'B' is added to the solution, the vapour pressure of solution increases to 560 mm Hg. Then the ratio of vapour pressures of A and B in their pure state is
The molar conductivity of acetic acid solution at infinite dilution is 390 S cm$^2$ mol$^{-1}$. What is the molar conductivity of 0.01 M acetic acid solution (in S cm$^2$ mol$^{-1}$)? (Given: $K_a(\text{CH}_3\text{COOH})=1.8\times10^{-5}$, assume $1-\alpha \approx 1$)
Choose the correct statements about allotropes of carbon I. Graphite has layered structure II. Buckminster fullerene is not aromatic in nature III. The distance between two adjacent layers in graphite is 141.5 pm IV. The hybridization of carbons in graphite and Buckminster fullerene is same
Which of the following is a lung irritant that can lead to an acute respiratory disease in children?
Arrange the following in decreasing order of their boiling points (A) 2-Methylbutane (B) 2,2-Dimethylpropane (C) Pentane (D) Hexane
Temperature of maximum density of H$_2$O is y K and D$_2$O is x K. (x - y) (in K) is nearly
How many of the following metals give oxides and nitrides when burnt in air? Be, Na, Mg, Ba, Sr, Li, K
Identify the incorrect order against the property given in brackets
Diborane on hydrolysis gives a compound X. The correct statements about X are I. It is a tribasic acid II. It is a weak monobasic acid III. It has a layer structure IV. It is highly soluble in water
If the sum of bond orders of O$_2$ and O$_2^-$ is x, then bond order of O$_2^+$ will be