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1
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The bond order and the magnetic characteristics of CN- are :
A
3, paramagnetic
B
$$2{1 \over 2}$$, paramagnetic
C
3, diamagnetic
D
$$2{1 \over 2}$$, diamagnetic
2
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following statements is correct ?
A
Gluconic acid can from cyclic (acteal/hemiacetal) structure
B
Gluconic acid is a partial oxidation product of glucose
C
Gluconic acid is obtained by oxidation of glucose with (HNO3)
D
Gluconic acid is a dicarboxylic acid.
3
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The number of possible optical isomers for the complexes MA2B2 with sp3 and dsp2 hydridized metal atom. respectively, is :
Note : A and B are unidentate netural and unidentate monoanionic ligands, respectively.
A
0 and 2
B
0 and 0
C
0 and 1
D
2 and 2
4
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The redox reaction among the following is :
A
reaction of H2SO4 with NaOH.
B
formation of ozone form atmosphere oxygen in the presence of sunlight.
C
combination of dinitrogen with dioxygen at 2000 K
D
reaction of [Co(H2O)6]Cl3 With AgNO3

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