Imprimir Test: Chemistry test (Chemistry - 9º Upper secondary school - chemistry history

1.

What is the colour of the qualitative determining reaction of glycerol?

A.

black

B.

ink blue

C.

sky blue

D.

green

2.

How many types of bacteria act in lactic acid fermentation of Bulgarian yoghurt?

A.

4

B.

3

C.

2

D.

1

3.

What is the name of the process of yogurt production?

A.

oxidation

B.

fermentation

C.

hydrolysis

D.

decomposition

4.

What is the Glycerol taste?

A.

sweet

B.

salty

C.

sour

D.

tasteless

5.

What is the qualitative reaction reagent for starch detection?

A.

Glycerol

B.

Iodine tincture

C.

Ammonia solution

D.

Copper hydroxide