IIT-JEE 2008 Paper 2 Offline | Isolation of Elements Question 21 | Chemistry

1

IIT-JEE 2008 Paper 2 Offline

MCQ (Single Correct Answer)

+4

-1

Match the conversions in Column I with the type(s) of reaction(s) given in Column II. Indicate your answer by darkening the appropriate bubbles of the 4 $$\times$$ 4 matrix given in the ORS.

	Column I		Column II
(A)	PbS $$\to$$ PbO	(P)	roasting
(B)	CaCO$$_3$$ $$\to$$ CaO	(Q)	Calcination
(C)	ZnS $$\to$$ Zn	(R)	carbon reduction
(D)	Cu$$_2$$S $$\to$$ Cu	(S)	self reduction

A

A $$\to$$ (p); B $$\to$$ (q); C $$\to$$ (p); D $$\to$$ (s)

B

A $$\to$$ (q); B $$\to$$ (p); C $$\to$$ (r); D $$\to$$ (p, s)

C

A $$\to$$ (p); B $$\to$$ (q); C $$\to$$ (p, r); D $$\to$$ (p, s)

D

A $$\to$$ (p); B $$\to$$ (q, s); C $$\to$$ (p, r); D $$\to$$ (p)

2

IIT-JEE 2008 Paper 1 Offline

MCQ (Single Correct Answer)

+3

-1

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

A

nitrogen

B

oxygen

C

carbon dioxide

D

argon

3

IIT-JEE 2007 Paper 1 Offline

MCQ (Single Correct Answer)

+3

-1

Extraction of zinc from zinc blende is achieved by

A

electrolytic reduction

B

roasting followed by reduction with carbon

C

roasting followed by reduction with another metal

D

roasting followed by self-reduction

4

IIT-JEE 2006

MCQ (Single Correct Answer)

+3

-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

A

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

B

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

C

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

D

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

JEE Advanced Subjects