
Kimfar praktek
Authored by Surya Rahadi
Chemistry
1st Grade
Used 16+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Histamin adalah?
Zat kimia yang dihasilkan tubuh untuk memicu muculnya reaksi alergi
Benda asing dari luar tubuh pemicu reaksi alergi
Alergen
Zat kimia yang memicu bakteri masuk ke tubuh
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Kelarutan garam antihistamin dalam pelarut organik adalah
Mudah larut
Sukar larut
Praktis tidak larut
Larut
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Suatu sampel yang merupkan senyawa golongan barbital diuji rantai sampingnya dengan meneteskan suatu pereaksi asam sulfat pekat dan formalin kemudian dipanaskan di atas penangas air akan menghasilkan
Warna merah anggur
Warna putih kekuningan
Warna kuning
Warna pereaksi hilang
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Reaksi kristalisasi barbiturat dimana sedikit sampel padat atau larutan dalam etanol diletakkan pada objek glass, lalu ditambahkan 1-2 tetes pereaksi dan ditutup dengan deck glass yang dipanaskan pada api kecil sampai mendidih (tidak sampai kering), kemudian dinginkan akan menghasilkan kristal berwarna
Biru ungu
Jingga merah sampai coklat
Putih kekuningan
Tidak berwarna
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Larutan yang mengandung 10 mg sampel A dalam 1 ml air ditambahkan 1 ml NH OH 10%, dipanaskan pada api kecil sampai mendidih, kemudian didinginkan lalu ditambahkan 1 tetes larutan CuSO4 16%, setelah itu dikocok dan membentuk larutan berwarna ungu biru disertai endapan hijau biru, jika dibiarkan selama 3 menit, endapan akan berubah menjadi jarum-jarum rosa. Apakah kandungan sampel A
Kaffein
Teofilin
Fenobarbital
Fenitoin
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Obat SSP yang jika ditambahkan Amonia dan Perak Nitrat akan membentuk endapan seperti gelatin dan jika diberikan Asam Nitrat endapannya akan larut adalah
Fenobarbital
Fenitoin
Kaffein
Teofilin
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Fenitoin Na saat ditambahkan pereaksi Natrium hidroksida akan membentuk
Endapan biru
Kristal ungu
Warna merah keunguan tidak stabil
Warna kuning jingga sampai jingga merah
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