Have an account?
Skip to Content
Chemistry
7th
grade
Uses of oxygen, hydrogen and carbon dioxide
15 questions
Show Answers
See Preview
- Multiple ChoicePlease save your changes before editing any questions.
Ingredients of rocket fuel are:
Hydrogen
Carbon Dioxide
Oxygen
Nitrogen
- Fill in the BlankPlease save your changes before editing any questions.
Smoke from the dry ice is an effect of ....... of dry ice.
- Multiple ChoicePlease save your changes before editing any questions.
Liquid oxygen is:
Pink
Green
Celadon
Blue
- Multiple ChoicePlease save your changes before editing any questions.
Ingredients of substance in breathing apparatuses are oxygen and hydrogen.
True
False
- Multiple ChoicePlease save your changes before editing any questions.
Welder is a man who combines metals.
True
False
- Fill in the BlankPlease save your changes before editing any questions.
Oxygen refines:
- Multiple ChoicePlease save your changes before editing any questions.
Wich element has got the lowest density?
Carbon Dioxide
Hydrogen
Oxygen
They have got the same density
- Multiple ChoicePlease save your changes before editing any questions.
The name of prototype of bus powered by hydrogenous fuel is Solaris Urbino 12 hydrogen.
True
False
- Multiple ChoicePlease save your changes before editing any questions.
The effect of cryotherapy isn't:
Faster action of the organism
Bleach of teeth
Quicker Metabolic Rate
Faster recovery of damage tissues
- Multiple ChoicePlease save your changes before editing any questions.
The symbol of Hydrogen is:
Hy
He
H
Ho
- Multiple ChoicePlease save your changes before editing any questions.
We use oxygen in getting:
Polymers
Radium
Isotopes
Ethylene glicol
- Fill in the BlankPlease save your changes before editing any questions.
Carbon dioxide is an important ingredient of very sweet drink. Write down its name,
- Multiple ChoicePlease save your changes before editing any questions.
Carbon dioxide is used by:
Ice cream makers
Carriers of fruits
Alpinists and divers
Bus drivers and taxi drivers
Welders
- Multiple ChoicePlease save your changes before editing any questions.
Ingredients are also an important part of:
Instruction
Novel
Recipe
Statute
- Multiple ChoicePlease save your changes before editing any questions.
Dry ice is used by:
Ice cream makers and barmans
Barmans and firefighters
Astronauts and candies makers
Candies makers and ice cream makers