Pollution and Its Types Questions and Answers
1 Marks Questions
Answer : Domestic sewage is an example of water pollutant.
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.
Answer : DDT is an example of non-biodegradable pesticide.
Answer : A constituent that causes pollution is pesticide.
Answer : A non-degradable pollutant is plastic.
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.
Answer : Odd one : Oxygen.
Category : Rest all are pollutants.
Answer : Any unwanted and disturbing sound beyond the normal level is known as noise pollution.
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
Answer : Chloroflurocarbons (CFCs) are banned in many countries because they are one of the major cause for ozone layer depletion.
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.
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.
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.
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.
Answer : Sulphur dioxide is the pollutant largely responsible for acid rain.