1
JEE Main 2022 (Online) 29th July Evening Shift
Numerical
+4
-1
Change Language

Sum of oxidation state (magnitude) and coordination number of cobalt in $$\mathrm{Na}\left[\mathrm{Co}(\mathrm{bpy}) \mathrm{Cl}_{4}\right]$$ is _________.

JEE Main 2022 (Online) 29th July Evening Shift Chemistry - Coordination Compounds Question 139 English

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2
JEE Main 2022 (Online) 29th July Evening Shift
Numerical
+4
-1
Change Language

A 1.84 mg sample of polyhydric alcoholic compound 'X' of molar mass 92.0 g/mol gave 1.344 mL of $$\mathrm{H}_{2}$$ gas at STP. The number of alcoholic hydrogens present in compound 'X' is ________.

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3
JEE Main 2022 (Online) 29th July Evening Shift
Numerical
+4
-1
Change Language

The number of stereoisomers formed in a reaction of $$(±)\mathrm{Ph}(\mathrm{C}=\mathrm{O}) \mathrm{C}(\mathrm{OH})(\mathrm{CN}) \mathrm{Ph}$$ with $$\mathrm{HCN}$$ is ___________.

$$\left[\right.$$where $$\mathrm{Ph}$$ is $$-\mathrm{C}_{6} \mathrm{H}_{5}$$]

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4
JEE Main 2022 (Online) 29th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

If $$z \neq 0$$ be a complex number such that $$\left|z-\frac{1}{z}\right|=2$$, then the maximum value of $$|z|$$ is :

A
$$\sqrt{2}$$
B
1
C
$$\sqrt{2}-1$$
D
$$\sqrt{2}+1$$
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