Susu getah asli atau disebut ............. didapati apabila batang pokok getah ditoreh

TINDAKAN ASID DAN ALKALI TERHADAP LATEKS

Quiz
•
Science
•
9th - 12th Grade
•
Medium
Thogeswari Thirunavukarsu
Used 2+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lateks
neoprena
isoprena
tiada jawapan
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Di dalam susu getah, molekul-molekul getah berbentuk rantai diselaputi oleh satu lapisan membran protein yang bercas positif menyebabkan ianya kekal dalam bentuk cecair
BETUL
SALAH
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apabila asid ditambah ke dalam lateks, ion-ion hidrogen yang bercas positif daripada asid akan meneutralkan cas negatif pada permukaan membran protein
BETUL
SALAH
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Susu getah akan menggumpal akibat daripada tindakan bakteria yang menghasilkan ...................dan meneutralkan membran protein molekul getah
ASID
NEUTRAL
ALKALI
CECAIR
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apabila ............ ditambah ke dalam lateks, ion-ion hidroksida daripada ............ akan meneutralkan ion hidrogen daripada asid
ALKALI,ALKALI
ASID,ALKALI
ALKALI,ASID
ASID,ASID
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tanpa asid, cas-cas negatif kekal pada membran protein dan molekul getah tetap menolak antara satu sama lain dan tidak berlanggar
BETUL
SALAH
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah kesan asid terhadap lateks?
Menyebabkan lateks bergumpal
Menyebabkan lateks lebih keras
Mengekalkan keadaan lateks
Menyebabkan lateks lebih tahan haba
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