I prodotti con la carta
Quiz
•
Other
•
6th Grade
•
Practice Problem
•
Medium
Gerardo Centrella
Used 17+ times
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40 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
Per la produzione della carta da macero quanti alberi si utilizzano?
Circa il 10% degli alberi utilizzati per la produzione della carta da cellulosa
Circa il 5% degli alberi utilizzati per la produzione della carta da cellulosa
Meno dell’1% degli alberi utilizzati per la produzione della carta da cellulosa
Nessun albero
2.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
Per separare la cellulosa dalla lignina si usa una soluzione di acqua e .....................................................................................
soda caustica
carica
calandratura
compressione
3.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
Una ............................................. è una sostanza chimica aggiunta alla pasta sbiancata per ottenere proprietà specifiche.
soda caustica
carica
calandratura
compressione
4.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
L’operazione di ............................................................. rende la carta liscia e compatta.
soda caustica
carica
calandratura
compressione
5.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
La fase di ................................................................. permette di ottenere un foglio dello spessore desiderato.
soda caustica
carica
calandratura
compressione
6.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
E' realizzata con materiali di prima qualità e alto contenuto di cellulosa:
carta per usi igienici
carta velina
carta da pacco
carta per quotidiani
carta per fotocopie
7.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
E' leggerissima e semitrasparente:
carta per usi igienici
carta velina
carta da pacco
carta per quotidiani
carta per fotocopie
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