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1
JEE Main 2019 (Online) 10th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
A reaction of cobalt (III) chloride and ethylenediamine in a 1 : 2 mole ratio generates two isomeric products A (violet coloured) and B (green coloured). A can show optical activity, but B is optically inactive. What type of isomers does A and B represcent ?
A
Ionisation isomers
B
Linkage isomers
C
Coordination isomers
D
Geometrical isomers
2
JEE Main 2019 (Online) 10th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
The difference in the number of unpaired electrons of a metal ion in its high spin and low-spin octahedral complexes is two. The metal ion is -
A
Mn2+
B
Ni2+
C
Co2+
D
Fe2+
3
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Which of the following is not an example of heterogenous catalytic reaction ?
A
Ostwald's process
B
Combustion of coal
C
Hydrogenation of vegetable oils
D
Haber's process
4
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The total number of isomers for a square planar complex
[M(F)(Cl)(SCN)(NO2)] is
A
16
B
8
C
12
D
4
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