1
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
The correct order of bond dissociation enthalpy of halogens is :
A
F2 > Cl2 > Br2 > I2
B
Cl2 > Br2 > F2 > I2
C
I2 > Br2 > Cl2 > F2
D
Cl2 > F2 > Br2 > I2
2
JEE Main 2021 (Online) 24th February Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
What is the correct order of the following elements with respect to their density?
A
Cr < Zn < Co < Cu < Fe
B
Cr < Fe < Co < Cu < Zn
C
Zn < Cr < Fe < Co < Cu
D
Zn < Cu < Co < Fe < Cr
3
JEE Main 2021 (Online) 24th February Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Consider the elements Mg, Al, S, P and Si, the correct increasing order of their first ionization enthalpy is :
A
Al < Mg < Si < S < P
B
Al < Mg < S < Si < P
C
Mg < Al < Si < S < P
D
Mg < Al < Si < P < S
4
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
The correct order of the ionic radii of
O2–, N3–, F , Mg2+, Na+ and Al3+ is :
A
N3– < O2– < F < Na+ < Mg2+ < Al3+
B
N3– < F < O2– < Mg2+ < Na+ < Al3+
C
Al3+ < Na+ < Mg2+ < O2– < F < N3–
D
Al3+ < Mg2+ < Na+ < F < O2– < N3–
JEE Main Subjects
EXAM MAP
Joint Entrance Examination
JEE MainJEE AdvancedWB JEE
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Medical
NEET