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प्रश्न
CFC is a pollutant.
पर्याय
True
False
MCQ
चूक किंवा बरोबर
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उत्तर
CFC is a pollutant- True.
shaalaa.com
Effects of Chemical Changes: Environmental Effects
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
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संबंधित प्रश्न
A chemical reaction is a temporary reaction.
Match the following.
| Spoilage | Decomposition |
| Ozone | Biocatalyst |
| Tarnishing | Oxygen |
| Yeast | Chemical reaction |
| Calcium oxide | Food |
What happens when an iron nail is placed in copper sulphate solution?
What is tarnishing? Give an example.
Explain how food items are spoiled by chemical reactions?
Do all the fruits and vegetables undergo browning? Explain.
Classify the following day-to-day activities based on chemical reactions by physical contact, solutions of reactants, heat, light, electricity, and catalyst.
- Burning of crackers during festivals
- Fading of coloured clothes on drying under sunlight.
- Cooking of eggs.
- Charging of batteries.
Explain the environmental effects of chemical reactions?
When a magnesium ribbon is burnt in the air, the ash formed is ______.
An element ‘A’ on exposure to moist air turns reddish-brown and a new compound ‘B’ is formed. The substance ‘A’ and ‘B’ are:
