This chapter is currently out of syllabus
1
JEE Main 2021 (Online) 27th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which refining process is generally used in the purification of low melting metals?
A
Chromatographic method
B
Liquation
C
Electrolysis
D
Zone refining
2
JEE Main 2021 (Online) 26th August Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Given below are two statements :

Statement I : Sphalerite is a sulphide or of zinc and copper glance is a sulphide ore of copper.

Statement II : It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using 'depressants' in a forth flotation method.

Choose the most appropriate answer from the options given below :
A
Statement I is true but Statement II is false.
B
Both Statement I and Statement II are true.
C
Statement I is false but Statement II is true.
D
Both Statement I and Statement II are false.
3
JEE Main 2021 (Online) 26th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Given below are two statements :

Statement I : The choice of reducing agents for metals extraction can be made by using Ellingham diagram, a plot of $$\Delta$$G vs temperature.

Statement II : The value of $$\Delta$$S increases from left to right in Ellingham diagram.

In the light of the above statements, choose the most appropriate answer from the options given below :
A
Both Statement I and Statement II are true
B
Statement I is false but Statement II is true
C
Both Statement I and Statement II are false
D
Statement I is true but Statement II is false
4
JEE Main 2021 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which one of the following set of elements can be detected using sodium fusion extract?
A
Sulfur, Nitrogen, Phosphorous, Halogens
B
Phosphorous, Oxygen, Nitrogen, Halogens
C
Nitrogen, Phosphorous, Carbon, Sulfur
D
Halogens, Nitrogen, Oxygen, Sulfur
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12