Pollution and Its Types Questions and Answers
1 Marks Questions
Question 1 : Give one example of water pollutant.
Answer : Domestic sewage is an example of water pollutant.
Question 2 : Briefly explain the term biomedical waste.
Answer : Biomedical wastes consist of the waste produced by hospitals, i.e. wastes containing dressing amputated body parts, used surgical instruments, etc. These spread diseases if left unmanaged.
Question 3 : Name the non-biodegradable pesticide.
Answer : DDT is an example of non-biodegradable pesticide.
Question 4 : A constituent that causes pollution.
Answer : A constituent that causes pollution is pesticide.
Question 5 : A non-degradable pollutant is ………….
Answer : A non-degradable pollutant is plastic.
Question 6 : Briefly describe the following term and then answer as directed.
Biodegradable pollutants. Name one.
Answer : Biodegradable pollutants are the substances which can be degraded by the action of the microorganisms, e.g., food and kitchen waste, paper, plant waste, etc.
Question 7 : A group is given with four examples in that group. There is one example which does not fit into the category, write down the category of the group and identify the odd one.
Sulphur dioxide, carbon monoxide, oxygen, nitrogen dioxide.
Answer : Odd one : Oxygen.
Category : Rest all are pollutants.
Question 8 : Define the term noise pollution.
Answer : Any unwanted and disturbing sound beyond the normal level is known as noise pollution.
Question 9 : Define the term pollutants with example.
Answer : Pollutants are the substances/materials that cause pollution and bring undesirable changes in the environment, e.g., chemicals , industrial wastes, etc.
Effects of Pollution Questions and Answers
1 Mark Questions
Question 1 : Give scientific reasons. Why use of CFC is banned in many countries.
Answer : Chloroflurocarbons (CFCs) are banned in many countries because they are one of the major cause for ozone layer depletion.
Question 2 : Give scientific reason for the following statement.
Carbon monoxide is dangerous when inhaled.
Answer : Carbon monoxide has great affinity with haemoglobin of our blood. Due to this, it gets mixed with haemoglobin almost 300 times more than oxygen. Thus cutting off the supply of oxygen. This is why it is dangerous when inhaled.
Question 3 : State any two harmful effects of acid rain.
Answer : i) It damages the fish and other aquatic life by increasing acidity of water.
ii) It damages the vegetation by killing the useful soil microbial community.
Question 4 : Answer briefly why carbon dioxide is considered as an air pollutant.
Answer : CO2 is responsible for the greenhouse effect or global warming. Rise of CO2 level causes enhanced greenhouse effect which leads to rise in temperature following many harmful effects as rising sea level , melting of glaciers, extinction of species at faster rate, etc.
Question 5 : Define ozone hole. When is the International Ozone Day observed?
Answer : Ozone hole is the thinning of the ozone layer due to increased use of CFCs. International Ozone Day is celebrated on 16th September every year.
Question 6 : Name the pollutant largely responsible for acid rain.
Answer : Sulphur dioxide is the pollutant largely responsible for acid rain.
Biology Questions and Answers ICSE Class 10 :
Cell Cycle and Cell Division | Genetics | Absorption by Roots| Transpiration | Photosynthesis | Circulatory System | Excretory System | Nervous System | Endocrine System | Reproductive System | Population and Its Control | AIDS to Health and Health Organisation | Pollution