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प्रश्न
______ soil has pH 7.
पर्याय
Temperature
volume
mass
density
humidity
acidic
weight
neutral
shape
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उत्तर
Neutral soil has pH 7.
संबंधित प्रश्न
Match the following :
| Column A | Column B |
| (a) Global warming | 1. Hydrated ferric oxide |
| (b) Acid rain | 2. Manganese dioxide |
| (c) Rust | 3. Carbon dioxide |
| (d) Catalyst | 4. Methane |
| (e) Photosynthesis | 5. Nitrogen Dioxide |
Name two air pollutants which cause global warming.
Name three greenhouse gases.
The capacity of air to hold moisture depends upon the ______ of the air.
Water does not have a ______ but has definite ______ and ______.
Why is it said that-
Air is a homogeneous mixture of various gases.
What will happen if the amount of water vapour in the air increases.
Fill in the blank:
Rusting is a chemical reaction which involves _____ oxidation.
Draw a neat labelled diagram for the following experiment.
To determine the component of air used up in burning, by using phosphorus and a bell jar.
The layer of air around the earth is known as ______.
