Match the conversion in Column I with the types of reactions given in Column II- Column I Column II- A- PbS -PbO p- Roasting- B- CaCO3 -CaO q- Calcination- C- ZnS -Zn r- Carbon reduction- D- Cu2S -Cu s- Self-reduction- -

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Roasting

Match the con...

Question

Match the conversion in $C o l u m n I$ with the type(s) of reaction(s) given in $C o l u m n I I$ .
$\begin{matrix} C o l u m n I & C o l u m n I I A . & P b S ⟶ P b O & p . & R o a s t i n g B . & C a C O_{3} ⟶ C a O & q . & C a l c i n a t i o n C . & Z n S ⟶ Z n & r . & C a r b o n r e d u c t i o n D . & C u_{2} S ⟶ C u & s . & S e l f - r e d u c t i o n \end{matrix}$

A . \to p; B . \to q; C . \to p, r; D . \to p, s .

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

A . \to p, s; B . \to q; C . \to p, q, r; D . \to p, s .

No worries! We‘ve got your back. Try BYJU‘S free classes today!

A . \to s; B . \to q; C . \to p, r; D . \to p, s .

No worries! We‘ve got your back. Try BYJU‘S free classes today!

A . \to p, s; B . \to q, r; C . \to p, r; D . \to p, s .

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $A . \to p; B . \to q; C . \to p, r; D . \to p, s .$
$P b S ⟶ P b O$
This is an example of a sulphide ore getting converted $o n l y$ to an oxide ore.
Hence, it is actually roasting!

$C a C O_{3} ⟶ C a O$
Likewise, this is a carbonate ore getting calcined to an oxide ore! Calcination!

$Z n S ⟶ Z n$
The above is actually a sulphide ore getting converted into metal!
From the given options, well need "roasting" to convert it to an oxide, which could then
be reduced to the metal using carbon reduction. Zn is way too active a metal for self-reduction!

For extraction of copper, partial roasting of the sulphide ore followed by self-reduction is the way to go!
$C u_{2} S ⟶ C u$

Suggest Corrections

Similar questions

Q. Match the conversion in

C o l u m n I

with the type(s) of reaction(s) given in

C o l u m n I I

\begin{matrix} C o l u m n I & C o l u m n I I A . & P b S ⟶ P b O & p . & R o a s t i n g B . & C a C O_{3} ⟶ C a O & q . & C a l c i n a t i o n C . & Z n S ⟶ Z n & r . & C a r b o n r e d u c t i o n D . & C u_{2} S ⟶ C u & s . & S e l f - r e d u c t i o n \end{matrix}

Q. Match each of the reactions given in

C o l u m n I

with the corresponding product(s) given in

C o l u m n I I

\begin{matrix} C o l u m n I & C o l u m n I I A . & C u + d i l . H N O_{3} & p . & N O B . & C u + c o n c . H N O_{3} & q . & N O_{2} C . & Z n + d i l . H N O_{3} & r . & N_{2} O D . & Z n + c o n c . H N O_{3} & s . & C u (N O_{3})_{2} t . & Z n (N O_{3})_{2} \end{matrix}

Q. Match the extraction processes listed in

C o l u m n I

with metals listed in

C o l u m n I I

\begin{matrix} C o l u m n I & C o l u m n I I A . & S e l f - r e d u c t i o n & p . & L e a d B . & C a r b o n r e d u c t i o n & q . & S i l v e r C . & C o m p l e x f o r m a t i o n a n d d i s p l a c e m e n t b y m e t a l & r . & C o p p e r D . & D e c o m p o s i t i o n o f i o d i d e & s . & B o r o n \end{matrix}

Q. Match each of the reactions given in

C o l u m n I

with the corresponding product(s) given in

C o l u m n I I

\begin{matrix} C o l u m n I & C o l u m n I I A . & C u + d i l . H N O_{3} & p . & N O B . & C u + c o n c . H N O_{3} & q . & N O_{2} C . & Z n + d i l . H N O_{3} & r . & N_{2} O D . & Z n + c o n c . H N O_{3} & s . & C u (N O_{3})_{2} t . & Z n (N O_{3})_{2} \end{matrix}

Match each of the reactions given in Column - I with the corresponding product(s) given in Column - II:
$\begin{matrix} C o l u m n - I & C o l u m n - I I (a) C u + d i l . H N O_{3} & (p) N O (b) C u + c o n c . H N O_{3} & (q) N O_{2} (c) Z n + d i l . H N O_{3} & (r) N_{2} O (d) Z n + c o n c . H N O_{3} & (s) C u (N O_{3})_{2} (t) Z n (N O_{3})_{2} \end{matrix}$

___

Join BYJU'S Learning Program

Match the conversion in Column I with the type(s) of reaction(s) given in Column II. Column IColumn IIA.PbS⟶PbOp.RoastingB.CaCO3⟶CaOq.CalcinationC.ZnS⟶Znr.Carbon reductionD.Cu2S⟶Cus.Self−reduction