1
JEE Main 2019 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following amines can be prepared by Gabriel phthalimide reaction ?
A
neo-pentylamine
B
n-butylamine
C
t-butylamine
D
triethylamine
2
JEE Main 2019 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the following compounds, the decreasing order of basic strength will be :
A
(C2H5)2NH > NH3 > C2H5NH2
B
NH3 > C2H5NH2 > (C2H5)2NH
C
(C2H5)2NH > C2H5NH2 > NH3
D
C2H5NH2 > NH3 > (C2H5)2NH
3
JEE Main 2019 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct order of the spin-only magnetic moment of metal ions in the following low-spin complexes, [V(CN)6]4–,[Fe(CN)6]4–, [Ru(NH3)6]3+, and [Cr(NH3)6]2+ , is :
A
V2+ > Ru3+ > Cr2+ > Fe2+
B
V2+ > Cr2+ > Ru3+ > Fe2+
C
Cr2+ > V2+ > Ru3+ > Fe2+
D
Cr2+ > Ru3+ > Fe2+ > V2+
4
JEE Main 2019 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The lathanide ion that would show colour is :
A
Sm3+
B
Gd3+
C
Lu3+
D
La3+
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