Advertisements
Advertisements
प्रश्न
What is pollution?
एक पंक्ति में उत्तर
Advertisements
उत्तर
Unwanted change in physical, chemical, and biological properties of the environment. This is termed pollution.
shaalaa.com
Effects of Chemical Changes: Production of Heat, Light, Sound and Pressure
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Burning of matchstick is an example for chemical reaction caused by _______
Which of the following factor induces electrtolysis?
Electrolysis of brine solution gives _______ gases.
Light energy may come out due to chemical reactions.
Match the following.
| Rusting | Photosynthesis |
| Electrolysis | Haber’s process |
| Thermolysis | Iron |
| Food | Brine |
| Catalysis | Decomposition of limestone |
What happens to the brine during electrolysis?
Explain any three conditions that are required for a chemical reaction to take place. Give example.
Chemically rust is ______.
Lead nitrate produces brown gas on heating.
Photochemistry deals with chemical reactions involving light.
