Fill Ups of The d- and f-Block Elements & Coordination Compounds, Past year Questions JEE Adv. JEE Notes | EduRev

Class 12 Chemistry 35 Years JEE Mains &Advance Past yr Paper

Created by: Abhishek Kapoor

JEE : Fill Ups of The d- and f-Block Elements & Coordination Compounds, Past year Questions JEE Adv. JEE Notes | EduRev

The document Fill Ups of The d- and f-Block Elements & Coordination Compounds, Past year Questions JEE Adv. JEE Notes | EduRev is a part of the JEE Course Class 12 Chemistry 35 Years JEE Mains &Advance Past yr Paper.
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Q.1. AgCN dissolves in excess KCN solution to give the complex compound ...........                    (1980)

Ans. K[Ag(CN)2]

Solution. K[Ag(CN)2]


Q.2. Mn2+ can be oxidised to Mn O-4 by .................     (1981 - 1 Mark)

(SnO2, PbO2, BaO2)

Ans. PbO2

Solution. PbO2;


Q.3.  Galvanization of iron denotes coating with ...............     (1983 - 1 Mark)

Ans. zinc

Solution. Zinc;


Q.4. Silver chloride is sparingly soluble in water because its lattice energy is greater than .............. energy.    (1987 - 1 Mark)

Ans. hydration/solvation

Solution. Hydration/solvation; [A substance dissolves when its ΔHhydration > lattice energy]


Q.5. The salts ............... and ............... are isostructural.      (1988 - 1 Mark)

(FeSO4.7H2O, CuSO4.5H2O, MnSO4.4H2O, ZnSO4.7H2O)

Ans. FeSO4.7H2O, ZnSO4.7H2O

Solution. FeSO4.7H2O, ZnSO4.7H2O ;


Q.6. The type of magnetism exhibited by [Mn(H2O)6]2+ ion is .............

Ans. Paramagnetism; [Mn(H2O)6]2+ shows paramagnetism because of presence of 5 unpaired electrons in the outer most orbital (3d5) of Mn2+.


Q.7. The IUPAC name of [Co(NH3)6] Cl3 is .............               (1994 - 1 Mark)

Ans. paramagnetism

Solution. Hexammine cobalt (III) chloride


Q.8. When Fe(s) is dissolved in aqueous hydrochloric acid in a closed vessel, the work done is ...........    (1997 - 1 Mark).

Ans. zero

Solution. zero


Q.9. Silver jewellery items tarnish slowly in the air due to their reaction with ............... .

Ans. H2S

Solution. H2S; It is due to formation of sulphide of silver (Ag,S) which is black.

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