1
JEE Main 2020 (Online) 2nd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
While titrating dilute HCl solution with aqueous NaOH, which of the following will not be required?
A
Pipette and distilled water
B
Clamp and phenolphthalein
C
Burette and porcelain tile
D
Bunsen burner and measuring cylinder
2
JEE Main 2020 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The compound that cannot act both as oxidising and reducing agent is :
A
H3PO4
B
H2SO3
C
H2O2
D
HNO2
3
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
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
4
JEE Main 2020 (Online) 7th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Oxidation number of potassium in K2O. K2O2 and KO2 respectively is :
A
+1, +2 and + 4
B
+1, +1 and + 1
C
+2, +1 and $$ + {1 \over 2}$$
D
+1, +4, and +2
Questions Asked from MCQ (Single Correct Answer)
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