
Tugas Viskositas S1 Farmasi
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Other
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University
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Practice Problem
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Hard
erlina fatmasari
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rheopeksi adalah suatu gejala dimana suatu sol akan:
a. Menjadi cair jika dikocok
b. Lebih cepat menjadi gel bila diaduk perlahan-lahan
c. Menjadi gel jika didiamkan tanpa pengadukan
d. Memiliki viskositas tetap terhadap kecepatan aliran
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. Dalam formulasi sediaan farmasi cair, tipe aliran thiksotropik diinginkan karena:
a. Membentuk gel saat dikocok
b. Mempunyai konsistensi tinggi dalam wadah dan mudah dituangkan saat dikocok
c. Tidak berubah viskositasnya
d. Selalu menjadi lebih kental saat diaduk
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3. Alat yang digunakan untuk mengukur viskositas dengan metode bola jatuh adalah:
a. Viskometer Brookfield
b. Viskometer Ubbelohde
c. Viskometer Hoeppler
d. Viskometer Cannon-Fenske
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. Pada bidang farmasi, rheologi penting untuk mencegah pengendapan dalam sediaan:
a. Tablet
b. Salep
c. Cairan suspensi
d. Kapsul keras
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5. Prinsip kerja viskometer putar Brookfield adalah:
a. Mengukur waktu aliran cairan melalui kapiler
b. Mengukur kecepatan jatuhnya bola dalam cairan
c. Mengukur torsi yang dibutuhkan untuk memutar spindle dalam cairan
d. Mengukur berat jenis cairan
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
1. Thiksotropi adalah sifat fluida yang viskositasnya __________ ketika diberikan gaya geser dan kembali seperti semula setelah gaya dilepaskan.
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
7. Persamaan η = t(Sb − Sr)B digunakan pada pengukuran viskositas dengan metode __________.
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