• 6s: \(n+\ell = 6\)
• 4f: \(n+\ell = 7\)
• 5d: \(n+\ell = 7\) (higher \(n\), so after 4f)
• 6p: \(n+\ell = 8\)

Post-cesarean Endometritis is the most common infectious complication after CS (incidence 10–30% without prophylaxis).

Risk factors: CS (especially emergency), prolonged ROM, prolonged labor, multiple VEs, lower socioeconomic status.

Diagnosis criteria (clinical):

• Fever \(\geq 38.5°C\) on \(\geq 2\) occasions after 24 hours postpartum
• Uterine tenderness (fundal)
• Foul-smelling/abnormal lochia
• Leukocytosis

Gold Standard Treatment: IV Clindamycin + Gentamicin

• Clindamycin: \(900\,\text{mg}\) IV every 8 hours (anaerobic coverage)
• Gentamicin: \(1.5\,\text{mg/kg}\) IV every 8 hours OR \(5\,\text{mg/kg}\) once daily (gram-negative coverage)
• Continue until patient is afebrile for 24–48 hours
• No oral follow-up needed if responded to IV therapy (ACOG recommendation)

Ampicillin is added if Enterococcus suspected (no response in 72 hours).

• They are hydrophobic due to alkyl groups.
• They are biocompatible and used in medical implants.
• They have high thermal stability and high dielectric strength (statement 'c' is incorrect because it says low dielectric strength).
• They are resistant to oxidation and chemicals.

Magnetic susceptibility: $\chi = \frac{M}{H}$, where $M$ is magnetisation (magnetic moment per unit volume).

Volume of cube: $V = (1\times10^{-2})^3 = 10^{-6}\ \text{m}^3$

Magnetisation: $M = \frac{\text{dipole moment}}{V} = \frac{20\times10^{-6}}{10^{-6}} = 20\ \text{A/m}$

$\chi = \frac{M}{H} = \frac{20}{60\times10^3} = 3.33\times10^{-4}$

$\chi \approx 3.3 \times 10^{-4}$