1
JEE Main 2020 (Online) 8th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A metal (A) on heating in nitrogen gas gives compound B. B on treatment with H2O gives a colourless gas which when passed through CuSO4 solution gives a dark blue-violet coloured solution. A and B respectively, are :
A
Na and NaNO3
B
Na and Na3N
C
Mg and Mg3N2
D
Mg and Mg(NO3)2
2
JEE Main 2020 (Online) 8th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Arrange the following bonds according to their average bond energies in descending order :
C–Cl, C–Br, C–F, C–I
A
C–Br > C–I > C–Cl > C–F
B
C–Cl > C–Br > C–I > C–F
C
C–I > C–Br > C–Cl > C–F
D
C–F > C–Cl > C–Br > C–I
3
JEE Main 2020 (Online) 8th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Two monomers in maltose are :
A
$$\alpha $$-D-glucose and $$\alpha $$-D-galactose
B
$$\alpha $$-D-glucose and $$\alpha $$-D-Fructose
C
$$\alpha $$-D-glucose and $$\alpha $$-D-glucose
D
$$\alpha $$-D-glucose and $$\beta $$-D-glucose
4
JEE Main 2020 (Online) 8th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Among (a) – (d) the complexes that can display geometrical isomerism are :
(a) [Pt(NH3)3Cl]+
(b) [Pt(NH3)Cl5]
(c) [Pt(NH3)2Cl(NO2)]
(d) [Pt(NH3)4ClBr]2+
A
(a) and (b)
B
(c) and (d)
C
(d) and (a)
D
(b) and (c)
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