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प्रश्न
What is pollution?
एका वाक्यात उत्तर
उत्तर
Unwanted change in physical, chemical, and biological properties of the environment. This is termed pollution.
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Effects of Chemical Changes: Production of Heat, Light, Sound and Pressure
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
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संबंधित प्रश्न
Burning of matchstick is an example for chemical reaction caused by _______
In Haber’s process of producing ammonia _______ is used as a catalyst.
Iron objects undergo rusting when exposed to _______ and _______.
Electrolysis of brine solution gives _______ gases.
Decomposition of lead nitrate is an example for a chemical reaction caused by light.
Formation of slaked lime from quicklime is an endothermic reaction.
Match the following.
| Rusting | Photosynthesis |
| Electrolysis | Haber’s process |
| Thermolysis | Iron |
| Food | Brine |
| Catalysis | Decomposition of limestone |
What happens to the brine during electrolysis?
Lead nitrate produces brown gas on heating.
Name the nitrate which does not produce brown gas on heating?
