Class 12th

Kindly go through the solution 

First reaction is EAS which will be given by that phenol derivative whose p-position is free for EAS reaction.

Eutrophication of water body results in loss of biodiversity.

$E_{M{n}^{+3}/M{n}^{+2}}^o=1.51V$

the strongest oxidizing agent have the highest reduction potential. So Mn³⁺ is the strongest oxidizing agent.

Cerium exists in two oxidation states (+3) and (+4)

  $\begin{array}{l}C{e}^{+4}+e^{-}\to C{e}^{+3}{E}^0=1.61V\\ C{e}^{+3}+3e^{-}\to Ce{E}^0=-2.336V\end{array}$  

It exist as Ce⁺⁴ and acts like a strong oxidizing agent by gaining electrons

In y axis u? = v? a? = -E? q / m
s? = 0, u? t + (1/2)a? t² = 0 ⇒ t = 2u? /a? = 2v? m/E? q
x coordinate at that time = v? * t = (2v? m/0) * v? = (2v? ²m)/E? q

For permanent magnetic Y is good choice, As it has very high coercivity (comparitively)

Caprolactum is monomer of nylon-6

Isoprene is polymer of natural rubber

2 – chloro-1,3-butadiene or chloroprene is the polymer of neoprene which is a synthetic rubber

Acrylonitrite is one of the monomer of Buna-N

$C{H}_2=CH-CN$ Acrylonitrile

At second surface,
i = 25°
r = 25°
∴ θ = I + r = 50°