1
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Mischmetal is an alloy consisting mainly of :
A
lanthanoid and actinoid metals
B
actinoid and transition metals
C
lanthanoid metals
D
actinoid metals
2
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following compounds can be prepared in good yield by Gabriel phthalimide synthesis?
A
JEE Main 2020 (Online) 6th September Evening Slot Chemistry - Compounds Containing Nitrogen Question 163 English Option 1
B
JEE Main 2020 (Online) 6th September Evening Slot Chemistry - Compounds Containing Nitrogen Question 163 English Option 2
C
JEE Main 2020 (Online) 6th September Evening Slot Chemistry - Compounds Containing Nitrogen Question 163 English Option 3
D
CH3—CH2—NHCH3
3
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
For a reaction,
4M(s) + nO2(g) $$ \to $$ 2M2On(s)
the free energy change is plotted as a function of temperature. The temperature below which the oxide is stable could be inferred from the plot as the point at which :
A
the free energy change shows a change from negative to positive value
B
the slope changes from positive to negative
C
the slope changes from negative to positive
D
the slope changes from positive to zero
4
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The IUPAC name of the following compound is : JEE Main 2020 (Online) 6th September Evening Slot Chemistry - Basics of Organic Chemistry Question 178 English
A
2-nitro-4-hydroxymethyl-5-amino benzaldehyde
B
3-amino-4-hydroxymethyl-5-nitro benzaldehyde
C
4-amino-2-formyl-5-hydroxymehtyl nitrobenzene
D
5-amino-4-hydroxymethyl-2-nitro benzaldehyde
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