Chemistry
Grade-6
Easy
Question
By which of the following ways we can reduce the exposure of synthetic chemicals in the house?
- Opt for (no-VOC or low-VOC) paints
- By using green cleaning substances
- Use flowers as substitute for chemical air fresheners
- All the above
Hint:
We can reduce the use of chemicals in house by stopping the use of substances which have or release chemicals.
The correct answer is: All the above
Ways to reduce exposure to synthetic chemicals in the house are:
Use flowers as a substitute for chemical air fresheners, By using green cleaning substances, and Opt for (no-VOC or low-VOC) paints.
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Using renewable energy sources is always better because:
Using renewable energy sources is always better because:
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Match column A(pollutants) with column B(sources).
Column A |
Column B |
(a) Ammonia |
(i) Fossils fuels |
(b) Black carbon |
(ii) Fertilizers |
(c) Formaldehyde |
(iii) Cigarettes |
(d) Smoke |
(iv) Disinfectants |
Match column A(pollutants) with column B(sources).
Column A |
Column B |
(a) Ammonia |
(i) Fossils fuels |
(b) Black carbon |
(ii) Fertilizers |
(c) Formaldehyde |
(iii) Cigarettes |
(d) Smoke |
(iv) Disinfectants |
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By installing tall chimneys in the factories:
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The long form of C.N.G. is:
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The natural air filters from the following is:
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Various health deteriorating compounds present in the smoke are:
Various health deteriorating compounds present in the smoke are:
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Which of the following measures need to be taken to control air pollution from vehicles?
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(ii) Use a hybrid or all-electric cars
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(i) Installation of catalytic converters in vehicles
(ii) Use a hybrid or all-electric cars
(iii) Use internal combustion engines in vehicles
(iv) Use lead containing fuels
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The most important cause of air pollution is:
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- When fossil fuels burn, nitrogen oxides are released into the atmosphere, contributing to the formation of smog and acid rain. The most common nitrogen compounds released into the atmosphere by human activities are collectively called nitrogen oxides.
The most important cause of air pollution is:
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The correction of is c)Burning fossils fuels.
- Air pollution is a mixture of harmful substances from man-made and natural sources. Motor vehicle emissions, fuel oil and natural gas used to heat homes, by-products of manufacturing and power generation, especially coal-fired power plants, and smoke from chemical manufacturing are the main sources of anthropogenic air pollution.
- When fossil fuels burn, nitrogen oxides are released into the atmosphere, contributing to the formation of smog and acid rain. The most common nitrogen compounds released into the atmosphere by human activities are collectively called nitrogen oxides.
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Burning of fossils fuels like petrol, and diesel causes:
The correct option is a)Global warming.
- Fossil fuels are formed by the decomposition of buried carbon-based organisms that died millions of years ago.
- They create carbon-rich deposits that are decomposed and burned for energy. They are non-renewable and currently provide about 80% of the world's energy.
- They are also used in the production of plastics, steel and various products. Fossil fuels include his three types: coal, oil and gas.
- When fossil fuels burn, large amounts of carbon dioxide, a greenhouse gas, are released into the atmosphere. Greenhouse gases trap heat in the atmosphere, causing global warming.
- The average global temperature has already increased by 1°C. Temperatures above 1.5°C increase the risk of sea level rise, extreme weather conditions, biodiversity loss, species extinction, food insecurity, and worsening health and poverty for millions of people worldwide. .
Burning of fossils fuels like petrol, and diesel causes:
ChemistryGrade-6
The correct option is a)Global warming.
- Fossil fuels are formed by the decomposition of buried carbon-based organisms that died millions of years ago.
- They create carbon-rich deposits that are decomposed and burned for energy. They are non-renewable and currently provide about 80% of the world's energy.
- They are also used in the production of plastics, steel and various products. Fossil fuels include his three types: coal, oil and gas.
- When fossil fuels burn, large amounts of carbon dioxide, a greenhouse gas, are released into the atmosphere. Greenhouse gases trap heat in the atmosphere, causing global warming.
- The average global temperature has already increased by 1°C. Temperatures above 1.5°C increase the risk of sea level rise, extreme weather conditions, biodiversity loss, species extinction, food insecurity, and worsening health and poverty for millions of people worldwide. .
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(iii)
(iv)
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(ii)
(iii)
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