Advertisements
Advertisements
प्रश्न
Discuss how acid rain occurs due to emission of smoke from vehicles and industries?
Advertisements
उत्तर
- Rain becomes acidic in nature due to the presence of certain pollutants in the air released by cars and industrial processes.
- Acid rain is caused by emissions of sulphur dioxide and nitrogen oxide which react with the water molecules in the atmosphere.
APPEARS IN
संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Formation of manure from leaves is a physical change.
How do the following help in bringing about a chemical change?
pressure.
What are (i) positive catalysts and (ii) negative catalysts? Support your answer with one example for each of them.
Explain by writing a word equation.
Respiration is a chemical change.
Give a chemical test to distinguish between the following gases.
H2 and CO2
Explain the term ‘chemical reaction’ with special reference to – ‘reactants’ and ‘products’.
Which of the following are chemical changes?
(i) Decaying of wood
(ii) Burning of wood
(iii) Sawing of wood
(iv) Hammering of a nail into a piece of wood
Which of the following is a chemical change?
Melting of wax is a change where a solid changes to liquid state. Give one more such change which you observe in your surroundings
Photosynthesis is a chemical charge. Justify your answer.
