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JEE Main 2025 (Online) 28th January Evening Shift
MCQ (Single Correct Answer)
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For bacterial growth in a cell culture, growth law is very similar to the law of radioactive decay. Which of the following graphs is most suitable to represent bacterial colony growth ?

Where N - Number of Bacteria at any time, $\mathrm{N}_0$ - Initial number of Bacteria.

A
JEE Main 2025 (Online) 28th January Evening Shift Chemistry - Chemical Kinetics and Nuclear Chemistry Question 21 English Option 1
B
JEE Main 2025 (Online) 28th January Evening Shift Chemistry - Chemical Kinetics and Nuclear Chemistry Question 21 English Option 2
C
JEE Main 2025 (Online) 28th January Evening Shift Chemistry - Chemical Kinetics and Nuclear Chemistry Question 21 English Option 3
D
JEE Main 2025 (Online) 28th January Evening Shift Chemistry - Chemical Kinetics and Nuclear Chemistry Question 21 English Option 4
2
JEE Main 2025 (Online) 28th January Evening Shift
Numerical
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The spin only magnetic moment ( $\mu$ ) value (B.M.) of the compound with strongest oxidising power among $\mathrm{Mn}_2 \mathrm{O}_3, \mathrm{TiO}$ and VO is ____________ B.M. (Nearest integer).
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3
JEE Main 2025 (Online) 28th January Evening Shift
Numerical
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Total number of molecules/species from following which will be paramagnetic is __________.

$\mathrm{O}_2, \mathrm{O}_2^{+}, \mathrm{O}_2^{-}, \mathrm{NO}, \mathrm{NO}_2, \mathrm{CO}, \mathrm{K}_2\left[\mathrm{NiCl}_4\right],\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_3, \mathrm{~K}_2\left[\mathrm{Ni}(\mathrm{CN})_4\right]$
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4
JEE Main 2025 (Online) 28th January Evening Shift
Numerical
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Electrolysis of 600 mL aqueous solution of NaCl for 5 min changes the pH of the solution to 12 .

The current in Amperes used for the given electrolysis is ___________ . (Nearest integer).
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