UJian Susulan Farfis 2025
Quiz
•
Health Sciences
•
University
•
Medium
Mutia Sari Wardana
Used 1+ times
FREE Resource
50 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
Apa satuan tegangan antarmuka?
Newton
Joule
Dyne/cm
Pascal
2.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
Dalam pengukuran tegangan antarmuka menggunakan metode kenaikan kapiler, rumusnya adalah:
γ = rhρg / 2
γ = ½ rhρg
γ = rhρg
γ = 2rhρg
3.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
Surfaktan dengan HLB tinggi digunakan untuk:
Membentuk emulsi air-dalam-minyak (W/O)
Membentuk emulsi minyak-dalam-air (O/W)
Menurunkan viskositas
Mengurangi adsorpsi ion
4.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
Dalam metode kapiler untuk mengukur tegangan permukaan, tinggi kolom cairan (h) berbanding lurus dengan:
Radius kapiler (r)
Kepadatan cairan (ρ)
Tegangan permukaan (γ)
Semua jawaban benar
5.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
Apa yang dimaksud dengan desorpsi?
Pengikatan molekul pada permukaan
Pelepasan molekul dari permukaan
Penurunan tegangan permukaan
Peningkatan sudut kontak
6.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
Fenomena kapilaritas adalah:
Naiknya cairan pada tabung sempit
Penurunan cairan pada tabung besar
Peningkatan viskositas cairan
Penurunan tegangan permukaan
7.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
Dalam adsorpsi negatif, molekul surfaktan akan:
Mengurangi tegangan permukaan
Menambah tegangan permukaan
Membentuk film monolayer
Meningkatkan viskositas
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