Question

Please answer questions 61 and 67...
Ignore the second picture...

Answer 1

$\huge\underline{\underline{\mathfrak \red{Question\:67:}}}$

$\large{\sf N_2+3H_2→ 2NH_3+}$

$\implies{\sf - \dfrac{d[N_2]}{dt}}$

$\implies{\sf -\dfrac{1}{3}\dfrac{d[H_2]}{dt} }$

$\implies{\sf +\dfrac{1}{2}\dfrac{d[NH_3]}{dt}}$

Therefore , option (3) is correct

$\huge\underline{\underline{\mathfrak \red{Question\:61}}}$

Option (3) is correct nylon-2 nylon-6

❏Biodegradable polymers are a special class of polymer that breaks down after its intended purpose by bacterial decomposition process to result in natural byproducts such as gases