Processes of Isolation of Elements-2
Chemistry Class 12 Science

MCQ Questions Class 12 General Principles and Processes of Isolation of Elements With Answers

rkmalviya74

CBSE Class 12 General Principles and Processes of Isolation of Elements Multiple Choice Questions with Answers. MCQ Questions Class 12 General Principles and Processes of Isolation of Elements with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 General Principles and Processes of Isolation of Elements MCQs with Answers to know their preparation level.

Trending
MCQ Class 10 Science Control and Coordination with Answers

Students who are searching for NCERT MCQ Questions for Class 12 General Principles and Processes of Isolation of Elements with Answers are compiled here to get good practice on all fundamentals. Know your preparation level on MCQ Questions for Class 12 General Principles and Processes of Isolation of Elements with Answers. You can also verify your answers from our provided MCQ Class 12 General Principles and Processes of Isolation of Elements with Answers. So, ace up your preparation with MCQ of Class 12 Chemistry Examinations.

MCQ Questions Class 12 General Principles and Processes of Isolation of Elements with Answers - Set - 2

Question 1: 

Which of the following pairs of metals is purified by van Arkel method?
(a) Ga and In
(b) Zr and Ti
(c) Ag and Au
(d) Ni and Fe

Correct Answer – (B)

Question 2 : 

Extraction of gold and silver involves leaching with
CN– ion. Silver is later recovered by
(a) distillation
(b) zone refining
(c) displacement with Zn
(d) liquation

Correct Answer – (C)

Question 3 : 

Purification of aluminium, by electrolytic refining, is known as
(a) Hoope’s process
(b) Baeyer’s process
(c) Hall’s process
(d) Serpeck’s process. 

Correct Answer – (A)

Question 4 : 

Nitriding is the process of surface hardening of steel by treating it in an atmosphere of
(a) NH3
(b) O3
(c) N2
(d) H2S

Correct Answer – (A)

Question 5 : 

The following reactions take place in the blast furnace in the preparation of impure iron. Identify the reaction pertaining to the formation of the slag.
(a) Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)
(b) CaCO3(s) → CaO(s) + CO2(g)
(c) CaO(s) + SiO2(s) → CaSiO3(s)
(d) 2C(s) + O2(g) → 2CO(g)

Correct Answer – (C)

MCQ Questions Class 12 General Principles and Processes of Isolation of Elements with Answers

Question 6: 

Identify the correct statement from the following :
(a) Wrought iron is impure iron with 4% carbon.
(b) Blister copper has blistered appearance due to evolution of CO2.
(c) Vapour phase refining is carried out for Nickel by van Arkel method.
(d) Pig iron can be moulded into a variety of shapes.

Correct Answer – (D)

Question 7: 

Calcium is obtained by
(a) reduction of calcium chloride with carbon
(b) electrolysis of molten anhydrous calcium chloride
(c) roasting of limestone
(d) electrolysis of solution of calcium chloride in H2O.

Correct Answer – (B)

Question 8: 

Aluminium is extracted from alumina (Al2O3) by electrolysis of a molten mixture of
(a) Al2O3 + HF + NaAlF4
(b) Al2O3 + CaF2 + NaAlF4
(c) Al2O3 + Na3AlF6 + CaF2
(d) Al2O3 + KF + Na3AlF6 

Correct Answer – (C)

Question 9: 

Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?
(a) The DGf° of the sulphide is greater than those for CS2 and H2S.
(b) The DGf° is negative for roasting of sulphide ore to oxide.
(c) Roasting of the sulphide to the oxide is thermodynamically feasible.
(d) Carbon and hydrogen are suitable reducing agents for metal sulphides.

Correct Answer – (D)

Question 10: 

Which of the following elements is present as the impurity to the maximum extent in the pig iron?
(a) Manganese
(b) Carbon
(c) Silicon
(d) Phosphorus

Correct Answer – (B)

MCQ Questions Class 12 General Principles and Processes of Isolation of Elements with Answers
Set 1
Set 2
Set 3
Set 4
Set 5

NCERT Solutions & Download NCERT Textbooks

MCQ Questions Class 12 Surface Chemistry with Answers
Set 1
Set 2
Set 3
Set 4
Set 5
MCQ Questions Mechanical Engineering I. C. Engines
Set 1
Set 2
Set 3
Set 4
Set 5

Related Posts

NCERT Class 9 Science MCQ
Class 9 Science

Class 9 Science MCQ

rkmalviya74
NCERT Class 9 Science MCQ (12)
Class 9 Physics Science

Class 9 Science MCQ Sound

rkmalviya74

Leave a Reply