Advertisements
Advertisements
प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
The catalyst used in laboratory preparation of oxygen gas from hydrogen peroxide gas is magnesium oxide
विकल्प
True
False
Advertisements
उत्तर
False.
The catalyst used in laboratory preparation of oxygengas from hydrogen peroxide gas is magnesium dioxide.
APPEARS IN
संबंधित प्रश्न
Describe a simple experiment to show that l/5th of air is oxygen.
What is the significance of water vapour in air?
Name the components of air with their approximate percentage by volume in air. Does the percentage by volume of each component remain the same, in the atmosphere of different parts of the world? Explain with reasons.
State the utility of oxygen for respiration in plants
Give word equation for the following conversion:
Nitrogen dioxide to nitric acid
How will you prove that air supports burning?
The component of air used by green plants to make their food, is ______.
Oxygen is used to oxidize ______.
Match the following
| 1. | Nitrogen | a. | Acid rain |
| 2. | CO2 | b. | Global warming |
| 3. | Melting of glaciers | c. | Volcanic gases |
| 4. | Corrosion of bridges | d. | Aerated drinks |
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
Mountaineers carry oxygen ______ with them, while climbing high mountains.
