JEE Main 2015 (Offline) | d and f Block Elements Question 207 | Chemistry

JEE Main 2015 (Offline)

MCQ (Single Correct Answer)

-1

Match the catalysts to the correct processes :

	Catalyst		Process
(A)	TiCl₃	(i)	Wacker process
(B)	PdCl₂	(ii)	Ziegler - Natta polymerization
(C)	CuCl₂	(iii)	Contact process
(D)	V₂O₅	(iv)	Deacon's process

$$\left( A \right) - \left( {ii} \right),\,\,\left( B \right) - \left( {iii} \right),\,\,\left( C \right) - \left( {iv} \right),\,\,\left( D \right) - \left( i \right)$$

$$\left( A \right) - \left( {iii} \right),\,\,\left( B \right) - \left( i \right),\,\,\left( C \right) - \left( {ii} \right),\,\,\left( D \right) - \left( {iv} \right)$$

$$\left( A \right) - \left( {iii} \right),\,\,\left( B \right) - \left( {ii} \right),\,\,\left( C \right) - \left( {iv} \right),\,\,\left( D \right) - \left( i \right)$$

$$\left( A \right) - \left( {ii} \right),\,\,\left( B \right) - \left( i \right),\,\,\left( C \right) - \left( {iv} \right),\,\,\left( D \right) - \left( {iii} \right)$$

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

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)

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

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