This chapter is currently out of syllabus
1
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The correct statement is :
A
leaching of bauxite using concentrated NaOH solution gives sodium aluminate and sodium silicate
B
the Hall-Heroult process is used for the production of aluminium and iron
C
pig iron is obtained from cast iron
D
the blistered appearance of copper during the metallurgical process is due to the evolution of CO2
2
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The idea of froth floatation method came from a person X and this method is related to the process Y of ores. X and Y, respectively, are :
A
washer woman and concentration
B
fisher woman and concentration
C
wisher man and reduction
D
fisher man and reduction
3
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The correct statement is :
A
zincite is a carbonate ore.
B
Sodium cyanide cannot be used in the metallurgy of silver.
C
aniline is a froth stabilizer.
D
zone refining process is used for the refining of titanium.
4
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Match the refining methods (Column I) with metals (Column II).
Column I
(Refining Methods)
Column II
(Metals)
(I) Liquation (a) Zr
(II) Zone Refining (b) Ni
(III) Mond Process (c) Sn
(IV) Van Arkel Method (d) Ga
A
(I)-(c) ; (II)-(a) ; (III)-(b) ; (IV)-(d)
B
(I)-(c) ; (II)-(d) ; (III)-(b) ; (IV)-(a)
C
(I)-(b) ; (II)-(d) ; (III)-(a) ; (IV)-(c)
D
(I)-(b) ; (II)-(c) ; (III)-(d) ; (IV)-(a)
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