1
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Among the statements(a)-(d) the incorrect ones are :
(a) Octahedral CO(III) complexes with strong fields ligands have very high magnetic moments.
(b) When $$\Delta $$0 < P, the d-electron configuration of Co(III) in an octahedral complex is $$t_{eg}^4e_g^2$$
(c) Wavelength of light absorbed by [Co(en)3]3+ is lower than that of [CoF6]3-
(d) If the $$\Delta $$0 for an octahedral complex of CO(III) is 18,000 cm-1, the $$\Delta $$t for its tetrahedral complex with the same ligand be 16,000 cm-1
A
(a) and (b) only
B
(b) and (c) only
C
(c) and (d) only
D
(a) and (d) only
2
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Within each pair of elements F & Cl, S & Se, and Li & Na, respectively, the elements that release more energy upon and electron gain are :
A
F, S and Li
B
Cl, Se and Na
C
Cl, S and Li
D
F, Se and Na
3
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The ammonia (NH3) released on quantitative reaction of 0.6 g urea (NH2CONH2) with sodium hydroxide (NaOH) can be neutralized by :
A
200 ml of 0.02 N HCl
B
100 ml of 0.2 N HCl
C
100 ml of 0.1 HCl
D
200 ml of 0.4 N HCl
4
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.
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