JEE Main 2014 (Offline) | d and f Block Elements Question 169 | Chemistry

JEE Main 2014 (Offline)

MCQ (Single Correct Answer)

-1

Which series of reactions correctly represents chemical relations related to iron and its compound?

Fe $$\buildrel {dil.\,{H_2}S{O_4}} \over \longrightarrow $$ FeSO₄ $$\buildrel {{H_2}S{O_4},{O_2}} \over \longrightarrow $$ Fe₂(SO₄)₃ $$\buildrel {heat} \over \longrightarrow $$ Fe

Fe $$\buildrel {{O_2} \, {, heat}} \over \longrightarrow $$ FeO $$\buildrel {dil.\,{H_2}S{O_4}} \over \longrightarrow $$ FeSO₄ $$\buildrel {heat} \over \longrightarrow $$ Fe

Fe $$\buildrel {{Cl_2} \, {, heat}} \over \longrightarrow $$ FeCl₃ $$\buildrel {heat, \, air} \over \longrightarrow $$ FeCl₂ $$\buildrel {Zn} \over \longrightarrow $$ Fe

Fe $$\buildrel {{O_2},\,heat} \over \longrightarrow $$ Fe₃O₄ $$\buildrel {CO,\,{{600}^o}C} \over \longrightarrow $$ FeO $$\buildrel {CO,\,{{700}^o}C} \over \longrightarrow $$ Fe

JEE Main 2013 (Offline)

MCQ (Single Correct Answer)

-1

Which of the following arrangements does not represent the correct order of the property stated against it?

Ni²⁺ < Co²⁺ < Fe²⁺ < Mn²⁺ : ionic size

Co³⁺ < Fe³⁺ < Cr³⁺ < Sc³⁺ : stability in aqueous solution

Sc < Ti < Cr < Mn : number of oxidation states

V²⁺ < Cr²⁺ < Mn²⁺ < Fe²⁺ : paramagnetic behaviour

JEE Main 2013 (Offline)

MCQ (Single Correct Answer)

-1

Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest $$E_{{M^{3 + }}/{M^{2 + }}}^0$$ value?

Mn (Z = 25)

Fe (Z = 26)

Co (Z = 27)

Cr (Z = 24)

AIEEE 2012

MCQ (Single Correct Answer)

-1

Iron exhibits + 2 and +3 oxidation states. Which of the following statements about iron is incorrect?

Ferrous oxide is more basic in nature than the ferric oxide

Ferrous compounds are relatively more ionic than the corresponding ferric compounds

Ferrous compounds are less volatile than the corresponding ferric compounds

Ferrous compounds are more easily hydrolysed than the corresponding ferric compounds.

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