1
JEE Main 2025 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
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In which of the following complexes the CFSE, $\Delta_o$ will be equal to zero?

A
$\mathrm{K}_3\left[\mathrm{Fe}(\mathrm{SCN})_6\right]$
B
$\left[\mathrm{Fe}(\mathrm{en})_3\right] \mathrm{Cl}_3$
C
$\left[\mathrm{Fe}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Br}_2$
D
$\mathrm{K}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]$
2
JEE Main 2025 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Which of the following acids is a vitamin ?

A
Saccharic acid
B
Ascorbic acid
C
Aspartic acid
D
Adipic acid
3
JEE Main 2025 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Radius of the first excited state of Helium ion is given as : $\mathrm{a}_0 \rightarrow$ radius of first stationary state of hydrogen atom.

A
$\mathrm{r}=\frac{\mathrm{a}_0}{4}$
B
$\mathrm{r}=2 \mathrm{a}_0$
C
$\mathrm{r}=4 \mathrm{a}_0$
D
$\mathrm{r=\frac{a_0}{2}}$
4
JEE Main 2025 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The IUPAC name of the following compound is :

JEE Main 2025 (Online) 22nd January Morning Shift Chemistry - Basics of Organic Chemistry Question 26 English

A
5-Methoxycarbonly-2-methylhexanoic acid
B
Methyl-5-carboxy-2-methylhexanoate.
C
2-Carboxy-5-methoxycarbonylhexane.
D
Methyl-6-carboxy-2,5-dimethylhexanoate.
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