Every question from past board papers on Principles Related to Practical Chemistry, newest paper first. Open any question for its full worked answer.
Match List I with List II
List I (Ion): A. \(\mathrm{Co^{2+}}\) B. \(\mathrm{Mg^{2+}}\) C. \(\mathrm{Pb^{2+}}\) D. \(\mathrm{Al^{3+}}\)
List II (Group Number in Cation Analysis): I. Group-I II. Group-III III. Group-IV IV. Group-VI
Choose the correct answer from the options given below :
Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from 0 to VI.
A. \(Al^{3+}\) B. \(Cu^{2+}\) C. \(Ba^{2+}\) D. \(Co^{2+}\) E. \(Mg^{2+}\)
Choose the correct answer from the options given below:
During the preparation of Mohr's salt solution (Ferrous ammonium sulphate), which of the following acid is added to prevent hydrolysis of \(Fe^{2+}\) ion?
Pumice stone is an example of -
Given below are two statements :
Statement I :
In the coagulation of a negative sol, the flocculating power of the three given ions is in the order -
\(Al^{3+} > Ba^{2+} > Na^+\)
Statement II :
In the coagulation of a positive sol, the flocculating power of the three given salts is in the order -
\(NaCl > Na_2SO_4 > Na_3PO_4\)
In the light of the above statements, choose the most appropriate answer from the options given below :
Measuring Zeta potential is useful in determining which property of colloidal solution ?
Which mixture of the solutions will lead to the formation of negatively charged colloidal \([AgI]I^-\) sol. ?
On which of the following properties does the coagulating power of an ion depend ?
Which one of the following characteristics is associated with adsorption ?
Fog is a colloidal solution of :
The coagulation values in millimoles per litre of the electrolytes used for the coagulation of \(As_2S_3\) are given below:
I. (NaCl) = 52, II. (BaCl\(_2\)) = 0.69,
III. (MgSO\(_4\)) = 0.22
The correct order of their coagulating power is
