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Published on: 28/05/2021
QB365 Provides the HOT Question Papers for Class 12 Chemistry, and also provide the detail solution for each and every HOT Questions. HOT Questions will help to get more idea about question pattern in every exams and also will help to get more marks in Exams
Download CBSE Class 12th Standard CBSE Chemistry question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Chemistry
Questions + Answers key
Take MCQ Chemistry Test1.
Though both Cr2+ and Mn3+ have d4 configuration, yet Cr2+ is reducing and Mn3+ is oxidizing. Explain Why?
2.
CrO3 is an acid anhydride. Explain.
3.
Why are Fe3+ and Cu2+ prominent in their aqueous solutions?
4.
Among the ionic species Sc3+, Ce4+ and Eu2+ Which one is a good oxidizing agent?
5.
Calculate the spin only magnetic moment of Iron present in the following compound.
[Fe(H2O)5NO]2+
1.
Because of the stable half filled configuration of t2g sets Cr3+.
2.
It dissolves in water to give chromic acid.
CrO3 + H2O ⟶ H2CrO4
3.
Because of high hydration enthalpies.
4.
Ce4+ is a good reducing agent because it can readily change to to the most stable oxidation state by gaining one electron. Others cannot do so.
5.
5.92 BM
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