IIT-JEE 2008 Paper 1 Offline | Isolation of Elements Question 22 | Chemistry

IIT-JEE 2008 Paper 1 Offline

MCQ (Single Correct Answer)

-1

Native silver metal forms a water soluble complex with a dilute aqueous solution of NaCN in the presence of:

nitrogen

oxygen

carbon dioxide

argon

IIT-JEE 2007 Paper 1 Offline

MCQ (Single Correct Answer)

-1

Extraction of zinc from zinc blende is achieved by

electrolytic reduction

roasting followed by reduction with carbon

roasting followed by reduction with another metal

roasting followed by self-reduction

IIT-JEE 2006

MCQ (Single Correct Answer)

-0

Match the extraction processes listed in Column I with metals listed in Column II.

Column I		Column II
(A)	Self-reduction	(P)	Lead
(B)	Carbon reduction	(Q)	Silver
(C)	Complex formation and displacement by metal	(R)	Copper
(D)	Decomposition of iodide	(S)	Boron

$$ [\mathrm{A} \rightarrow(\mathbf{P}, \mathbf{R}) ; \mathbf{B} \rightarrow(\mathbf{P}, \mathbf{R}) ; \mathbf{C} \rightarrow(\mathbf{Q}) ; \mathrm{D} \rightarrow(\mathrm{~S})] .$$

$$ [\mathrm{A} \rightarrow(\mathbf{P}) ; \mathbf{B} \rightarrow(\mathbf{P}, \mathbf{R}) ; \mathbf{C} \rightarrow(\mathbf{Q}) ; \mathrm{D} \rightarrow(\mathrm{~S})] .$$

$$ [\mathrm{A} \rightarrow(\mathbf{P}, \mathbf{R}) ; \mathbf{B} \rightarrow(\mathbf{R}) ; \mathbf{C} \rightarrow(\mathbf{Q}) ; \mathrm{D} \rightarrow(\mathrm{~S})] .$$

$$ [\mathrm{A} \rightarrow(\mathbf{P}, \mathbf{R}) ; \mathbf{B} \rightarrow(\mathbf{P}, \mathbf{R}) ; \mathbf{C} \rightarrow(\mathbf{S}) ; \mathrm{D} \rightarrow(\mathrm{Q})] .$$

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