
LATIHAN UKOM 3
Quiz
•
Chemistry
•
University
•
Practice Problem
•
Medium
insani maharani
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15 questions
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1.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Berikut adalah logo obat tradisional yaitu
Obat Herbal Terstandar
Fitofarmaka
Jamu
Herbal
2.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
seorang analis akan menentukan kadar zat aktif obat secara alkalimetri dengan larutan baku NaOH pro analis dalam bentuk padat. Massa atom relatif NaOH adalah 40. Berapa gram NaOH yang harus ditimbang?
4 gram
3 gram
1 gram
2 gram
Answer explanation
=40gram x 0,1 mol x 0,5 L= 2 gram
mol L
kenapa 0,5 L?
karena 500 mL=500:1000=0,5 L
3.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Logo apakah ituu?
Jamu
OHT
Fitofarmaka
simplisia
4.
MULTIPLE CHOICE QUESTION
20 sec • 5 pts
Seorang analis diminta untuk menentukan bobot jenis sirup dengan piknometer. dimana piknometer kosonh 17 gram, piknometer berisi air suling 23 gram, piknometer berisi sirup 25 gram. Berapa BJ sampel?
2,33
1,33
5,32
1,08
Answer explanation
BJ= bj zat
bj air
BJ= (25-17)
(23-17)
=1,33
5.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Logo apa yaaa
Jamu
OHT
Fitofarmaka
jamu pegal linu
6.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Dilakukan pemeriksaan kadar air simplisia dengan cara gravimetri. Daun kemangi ditimbang
kurang lebih 10,1004 g. Berat cawan kosong adalah 46.7891 g. Setelah dikeringkan di oven,
bobotnya menjadi 56,2982g. Berapakah hasil penetapannya (%)?
5,45
5,75
5,55
5,85
Answer explanation
Kadar air = (berat simplisia)- ((berat cawan+simplisia)-berat cawan) x 100%
Berat simplisia
= 10,1004 – 9,5091 x 100%
10,1004
= 5.85%
7.
MULTIPLE CHOICE QUESTION
10 sec • 7 pts
Pada identifikasi dengan KLT. Diketahui jarak noda 3 cm dan jarak elusi 8 cm. Berapakah Rf?
0,375
0,345
0,875
1,23
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