Namma Kalvi
www.nammakalvi.org
A-PDF Text Replace DEMO: Purchase from www.A-PDF.com to remove the watermark
EC CHEMISTRY
10
12
VOLUME - I
This special guide is prepared
on the basis of New Syllabus
Whatever change in the question pattern
this guide will give 100% result
Vivek Illam, No. 19, Raj Nagar, N.G.O. ‘A’ Colony,
Palayamkottai, Tirunelveli - 627 007.
Ph: 0462 - 2553186
Cell : 94433 81701, 94422 69810, 90474 74696
, www.nammakalvi.org
PREFACE
Welcome to all teachers and students.
Nothing succeeds like success’ Loyola’s EC brings that success.
Loyola Publications has immense pleasure in bringing this EC Guide for Std XII
Chemistry.
T
his guide is framed in such a way to fulfil the needs of the students going for
Government Public Examination as well as various entrance examinations.
T
his guide elaborately deals with all the exercise questions given in the text
book.
M
oreover additional questions in each category (1, 2, 3 & 5 Marks) for all units
are provided.
A
nswers for 1 mark questions are provided with suitable explanations and
reasons wherever necessary.
A
nswer for 2, 3 and 5 mark questions are provided in a simple and lucid manner
so as to make the learning as an enjoyable experience.
A
fter learning this guide thoroughly a student will understand clearly all the
concepts given in the text book.
Surely this guide will be a boon to slow learners.
U
tmost care has been taken in bringing this guide without any conceptual and
spelling errors.
A
team of well experienced and dedicated teachers worked tirelessly in making
this endeavour a successful one.
Y
our valuable suggestions and comments are expected to improve this guide
in the coming years.
Loyola Publications wishes you all good luck.
Loyola Publication
, www.nammakalvi.org
Contents
Unit Title Page
1 Metallurgy 5
2 p-Block Elements-I 29
3 p-Block Elements - II 56
4 Transition and Inner Transition Elements 88
, Loyola EC – 12th CHEMISTRY
Metallurgy
www.nammakalvi.org
PART - I - TEXT BOOK EVALUATION
I. Choose the correct answer
1. Bauxite has the composition
a) Al2O3 b) Al2O3.nH2O c) Fe2O3.2H2O d) None of these
Ans : b) Al2O3.nH2O
2. Roasting of sulphide ore gives the gas (A). (A) is a colourless gas. Aqueous solution of (A)
is acidic. The gas (A) is
a) CO2 b) SO3 c) SO2 d) H2S Ans : c) SO2
3. Which one of the following reaction represents calcination?
a) 2Zn + O2 2ZnO b) 2ZnS + 3O2 2ZnO + 2SO2
c) MgCO3 MgO + CO2 d) Both (a) and (c)
Ans : c) MgCO3 MgO + CO2
4. The metal oxide which cannot be reduced to metal by carbon is
a) PbO b) Al2O3 c) ZnO d) FeO Ans : b) Al2O3
5. Which of the metal is extracted by Hall - Heroult process?
a) Al b) Ni c) Cu d) Zn Ans : a) Al
6. Which of the following statements, about the advantage of roasting of sulphide ore before
reduction is not true?
a) G 0f of sulphide is greater than those for CS2 and H2S
b) G 0r is negative for roasting of sulphide ore to oxide
c) Roasting of the sulphide to its oxide is thermodynamically feasible.
d) Carbon and hydrogen are suitable reducing agents for metal sulphides.
Ans : d) Carbon and hydrogen are suitable reducing agents for metal sulphides.
7. Match items in column I - I with the items of column - II and assign the correct code.
Column I Column II
A Cyanide process i Ultrapure Ge A B C D
B Froth floatation process ii Dressing of ZnS a) (i) (ii) (iii) (iv)
C Electrolytic reduction iii Extraction of Al b) (iii) (iv) (v) (i)
D Zone refining iv Extraction of Au c) (iv) (ii) (iii) (i)
v Purification of Ni d) (ii) (iii) (i) (v)
Ans :c) (iv) (ii) (iii) (i)
5 Unit - 1
www.nammakalvi.org
A-PDF Text Replace DEMO: Purchase from www.A-PDF.com to remove the watermark
EC CHEMISTRY
10
12
VOLUME - I
This special guide is prepared
on the basis of New Syllabus
Whatever change in the question pattern
this guide will give 100% result
Vivek Illam, No. 19, Raj Nagar, N.G.O. ‘A’ Colony,
Palayamkottai, Tirunelveli - 627 007.
Ph: 0462 - 2553186
Cell : 94433 81701, 94422 69810, 90474 74696
, www.nammakalvi.org
PREFACE
Welcome to all teachers and students.
Nothing succeeds like success’ Loyola’s EC brings that success.
Loyola Publications has immense pleasure in bringing this EC Guide for Std XII
Chemistry.
T
his guide is framed in such a way to fulfil the needs of the students going for
Government Public Examination as well as various entrance examinations.
T
his guide elaborately deals with all the exercise questions given in the text
book.
M
oreover additional questions in each category (1, 2, 3 & 5 Marks) for all units
are provided.
A
nswers for 1 mark questions are provided with suitable explanations and
reasons wherever necessary.
A
nswer for 2, 3 and 5 mark questions are provided in a simple and lucid manner
so as to make the learning as an enjoyable experience.
A
fter learning this guide thoroughly a student will understand clearly all the
concepts given in the text book.
Surely this guide will be a boon to slow learners.
U
tmost care has been taken in bringing this guide without any conceptual and
spelling errors.
A
team of well experienced and dedicated teachers worked tirelessly in making
this endeavour a successful one.
Y
our valuable suggestions and comments are expected to improve this guide
in the coming years.
Loyola Publications wishes you all good luck.
Loyola Publication
, www.nammakalvi.org
Contents
Unit Title Page
1 Metallurgy 5
2 p-Block Elements-I 29
3 p-Block Elements - II 56
4 Transition and Inner Transition Elements 88
, Loyola EC – 12th CHEMISTRY
Metallurgy
www.nammakalvi.org
PART - I - TEXT BOOK EVALUATION
I. Choose the correct answer
1. Bauxite has the composition
a) Al2O3 b) Al2O3.nH2O c) Fe2O3.2H2O d) None of these
Ans : b) Al2O3.nH2O
2. Roasting of sulphide ore gives the gas (A). (A) is a colourless gas. Aqueous solution of (A)
is acidic. The gas (A) is
a) CO2 b) SO3 c) SO2 d) H2S Ans : c) SO2
3. Which one of the following reaction represents calcination?
a) 2Zn + O2 2ZnO b) 2ZnS + 3O2 2ZnO + 2SO2
c) MgCO3 MgO + CO2 d) Both (a) and (c)
Ans : c) MgCO3 MgO + CO2
4. The metal oxide which cannot be reduced to metal by carbon is
a) PbO b) Al2O3 c) ZnO d) FeO Ans : b) Al2O3
5. Which of the metal is extracted by Hall - Heroult process?
a) Al b) Ni c) Cu d) Zn Ans : a) Al
6. Which of the following statements, about the advantage of roasting of sulphide ore before
reduction is not true?
a) G 0f of sulphide is greater than those for CS2 and H2S
b) G 0r is negative for roasting of sulphide ore to oxide
c) Roasting of the sulphide to its oxide is thermodynamically feasible.
d) Carbon and hydrogen are suitable reducing agents for metal sulphides.
Ans : d) Carbon and hydrogen are suitable reducing agents for metal sulphides.
7. Match items in column I - I with the items of column - II and assign the correct code.
Column I Column II
A Cyanide process i Ultrapure Ge A B C D
B Froth floatation process ii Dressing of ZnS a) (i) (ii) (iii) (iv)
C Electrolytic reduction iii Extraction of Al b) (iii) (iv) (v) (i)
D Zone refining iv Extraction of Au c) (iv) (ii) (iii) (i)
v Purification of Ni d) (ii) (iii) (i) (v)
Ans :c) (iv) (ii) (iii) (i)
5 Unit - 1
