1
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The isoelectronic set of ions is :
A
F, Li+, Na+ and Mg2+
B
Li+, Na+, O2- and F-
C
N3–, O2-, F- and Na+
D
N3–, Li+, Mg2+ and O2-
2
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The principle of column chromatography is :
A
Gravitational force.
B
Capillary action.
C
Differential adsorption of the substances on the solid phase.
D
Differential absorption of the substances on the solid phase.
3
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The graph between $${\left| \psi \right|^2}$$ and r (radial distance) is shown below. This represents : JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Structure of Atom Question 168 English
A
3s orbital
B
2s orbital
C
2p orbital
D
1s orbital
4
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The major product of the following reaction is : JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Compounds Containing Nitrogen Question 206 English
A
JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Compounds Containing Nitrogen Question 206 English Option 1
B
JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Compounds Containing Nitrogen Question 206 English Option 2
C
JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Compounds Containing Nitrogen Question 206 English Option 3
D
CH3CH = CH–CH2NH2

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