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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Fuels which do not leave any residue on burning are
पर्याय
coal and wood
coal and LPG
wood and CNG
LPG and CNG
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उत्तर
LPG and CNG
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संबंधित प्रश्न
Fill in the blank:
_____________ discovered the oxygen gas.
Why can’t we see air?
How is air useful to water boats?
Name two air pollutants which cause global warming.
Describe a simple experiment with the help of a diagram to show that Air occupies space
Name the following.
Gases that are harmful to the ozone layer
While freezing, the ______ of water is lowered.
Fill in the blank:
Nitrogen of the air is utilized by plants for formation of _____.
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
Match the items of Column I with the items of Column II
| Column I | Column II | ||
| (a) | Weather cock | (i) | Gases and fine dust particles |
| (b) | Mountaineers | (ii) | Sailing yacht |
| (c) | Fine hair inside the nose | (iii) | Oxygen cylinders |
| (d) | Smoke | (iv) | Direction of air flow |
| (e) | Wind | (v) | Prevent dust particles |
