Pollution
| Description: PRACTICE MCQ FOR X TH BOARD EXAM. | |
| Number of Questions: 20 | |
| Created by: Aliensbrain Bot | |
| Tags: air water.green house effect Air Pollution Pollution Water Pollution Types of Pollution Soil Pollution |
Due to greenhouse effect, the average temperature of Earth's atmosphere is gradually increasing. This is called global warming. Which of the following are not greenhouse gases?
Which of the following methods is used to convert organic pollutants into water vapour and CO2?
Which of the following diseases is not spread by the contamination of water?
Mile Island and Chernobyl disasters are environmental disasters associated with the accidental leakage of radioactive waste. In India, Bhopal gas tragedy, an environmental disaster, is associated with the leakage of
Which of the following ailments are not caused by noise pollution?
Water pollution related to Minamata disease was first discovered in Minamata city in Japan in 1956. The substance, which causes Minamata disease is __________.
Biological oxygen demand (BOD) is the amount of oxygen consumed by microbes to decompose organic matter. It is least in
Marble cancer of monuments like Taj Mahal is caused due to acid rain. Acid rain is caused by _________.
Chlorofluorocarbons (CFCs) which are used in refrigerators, air conditioners and aerosol sprays are responsible for
The smoke released from vehicles may contain oxides of nitrogen, which combine with other air pollutants and fog to form smog. Smog is not responsible for
Chlorination is a commonly used chemical method for purifying contaminated water. Chlorination is done by adding
Eutrophication is caused by excessive quantities of chemicals, which get washed from fields. These act as nutrients for algae to flourish. Due to eutrophication, ______________.
Pesticides and harmful chemicals enter the food chain and get concentrated at each trophic level on the food chain. This process is called ___________.
Which of the following are examples of toxins that biologically magnify and cause biomagnification?
Itai-itai disease in Japan characterised by pain in joints and bones are due to pollution of water ______________.
Which of the following organisms are the indicators of sulphur dioxide pollution?
The process involved in the secondary treatment of sewage is _____________.
An insitu method for conserving biodiversity is
A method to eradicate pests using the pest's natural predators or parasites, which is environmental friendly is termed as
Uncontrolled growth of aquatic plants and bloom forming algae in natural waters generally occurrs due to high concentration of