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optativa

Authored by DENIA Cuello

Biology

2nd Grade

Used 1+ times

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19 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Son utilizados por humanos desde la época prehistoria.

Fibras textiles

Fibras naturales

Fibras artificiales

Textiles

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Se obtiene a partir de celulosa pura derivada de borra de algodón.

Poliester

Acenato

Rayón

Lino

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Formada por sustancias químicas, elaborada por los seres vivos.

Fibras naturales

Fibras textiles

Lino

Rayón

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Se emplea para eliminar manchas que contienen algodón.

Pepsinogeno

Amilasas

Rayón

Vicosas

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Extrajo por primera vez la clorofila.

Willstatter

Von Baeyer

Richard Martin

Fischer

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Sintetizo la anilina del alquitrán de carbón de hulla.

Von Hofmann

Perkin

Karrer

Robert

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Realizó la síntesis del colorantes rojo en la sangre de los vertebrados.

Perkin

Karrer

Von

Fischer

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