Chemistry

With decrease in inter-nuclear distance, the potential energy of the system decreases, reaches a minimum value and then sharply increases due to rise in inter-electronic as well as inter-nuclear repulsions

Among its different uses noradrenaline is used as an anti-depressant.

ρ = M/V
∴ 6.17 = (2 x MX? ) / (N? x (300 x 10? ¹? )³)
Solving MX? = 50 g
∴ No. of molecules in 200 g
= (200/50) x N? = 4 N?

In water gas shift reaction carbon monoxide is oxidized into carbon dioxide by treating it with steam in presence of catalyst.

For A
0.693/300 = (2.303/t) log (A? /A? )

For B
0.693/180 = (2.303/t) log (B? /B? )

Given A? = B? & A? = 4B?
Substituting & solving we get t = 900 s

At CMC, the particles cluster together through lyophobic end to form associated colloid called micelle. Further all lyophilic ends (polar head) get projected towards water.

B is least basic as lone pair of electron is present in resonance so as to make the system aromatic in nature
D is most basic as it results in formation of equivalent resonating structures upon attack of H?
Among A and C, the former is less basic as sp² hybridistion of nitrogen decrease its basic strength.
Hence option 3 follows

According to Aufbau's principal, the increasing energy of atomic orbitals for sixth period element follows the order
6s < 4f < 5d < 6p

The major functions of hormones are:

• Regulating Metabolism
• Controlling Growth and Development
• Managing Stress and Energy
• Regulating Sleep and Mood