Name______________ Class 8 CLASS TEST Marks:_____/25 1. Explain the natural ways in which the air pollution occurs. (4) _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ 2. List the methods of reducing pollution. (3) _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ 3. What is acid rain and how does it damages the environment and living things. (5) _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ 4. How oil spill occurs and list the extent of damage it causes. (2+4) _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ 5. List 5 ways in which the land can be polluted. (5) _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ _________________________________________________________________________________________________ 6. What is photochemical smog? (1) ________________________________________________________________________________________________ 7. What is pollution? (1) ________________________________________________________________________________________________