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Q57) AgCl precipitate dissolves in NH4OH due to the formation of ..[CBSE PMT 1998]




SOLUTION

AgCl + 2NH4OH → [Ag(NH3)2]Cl
Answer: (c)


Q58) Mg is an important component of which biomolecule occurring extensively in living world? [ CBSE PMT 2000]




SOLUTION


Answer: (b)


Q59) The total number of possible isomers of the complex compound [CuII(NH3)4][PtIICl4] is ..[ CBSE PMT 1998]



SOLUTION

(i) [Cu(NH3)4Cl][PtCl3 NH3]
ii) [ CuNH3Cl3] [Pt(NH3)3Cl]
iii) [CuCl4][Pt(NH3)3]
iv) [Cu(NH3)2Cl2] [Pt(NH3)2Cl2]
Answer:(d)



Q60) Which of the following is paramagnetic? [ AFMC 1997]



SOLUTION

[NiCl4]2- is paramagnetic because of unpaired electrons
Answer: (d)


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