
Test finale 2F
Authored by Stefano Cannioto
Chemistry
12th Grade

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual è l'intervallo della scala del pH
0-7
0-100
7-14
0-14
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Che tipo di zuccheri ricerchiamo col saggio di Lugol
Glucosio
Cellulosa
Amido
Fruttosio
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Il liquido di Lugol quando entra a contatto con lo zucchero di interesse cambia colore
da rosso a giallo
da verde a nero
da giallo a blu
da marrone a nero
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Col saggio di Fehling il rame contenuto nel reattivo A passa dalla forma ossidata a quella ridotta con una variazione cromatica
da blu a rosso mattone
da blu a nero
da giallo a verde
nessuna risposta
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Il succo di cavolo rosso in ambiente acido si colora di
rosso
nero
blu
verde
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La curcuma per la presenza di curcumina in ambiente alcalino si colora di
giallo
rosso
viola
verde
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quale tra questi prodotti di uso comune ha pH maggiore
vino
succo di limone
ammoniaca
acqua distillata
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