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Uses of oxygen, hydrogen and carbon dioxide

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Ingredients of rocket fuel are:

a)

Hydrogen

b)

Carbon Dioxide

c)

Oxygen

d)

Nitrogen

2.

Smoke from the dry ice is an effect of (a)   of dry ice.

3.

Liquid oxygen is:

a)

Pink

b)

Green

c)

Celadon

d)

Blue

4.

Ingredients of substance in breathing apparatuses are oxygen and hydrogen.

a)

True

b)

False

5.

Welder is a man who combines metals.

a)

True

b)

False

6.

Oxygen refines:

(a)  

7.

Wich element has got the lowest density?

a)

Carbon Dioxide

b)

Hydrogen

c)

Oxygen

d)

They have got the same density

8.

The name of prototype of bus powered by hydrogenous fuel is Solaris Urbino 12 hydrogen.

a)

True

b)

False

9.

The effect of cryotherapy isn't:

a)

Faster action of the organism

b)

Bleach of teeth

c)

Quicker Metabolic Rate

d)

Faster recovery of damage tissues

10.

The symbol of Hydrogen is:

a)

Hy

b)

He

c)

H

d)

Ho

11.

We use oxygen in getting:

a)

Polymers

b)

Radium

c)

Isotopes

d)

Ethylene glicol

12.

Carbon dioxide is an important ingredient of very sweet drink. Write down its name,

(a)  

13.

Carbon dioxide is used by:

a)

Ice cream makers

b)

Carriers of fruits

c)

Alpinists and divers

d)

Bus drivers and taxi drivers

e)

Welders

14.

Ingredients are also an important part of:

a)

Instruction

b)

Novel

c)

Recipe

d)

Statute

15.

Dry ice is used by:

a)

Ice cream makers and barmans

b)

Barmans and firefighters

c)

Astronauts and candies makers

d)

Candies makers and ice cream makers