Ncert Solutions Chemistry Class 11th
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Match the activity given in Column I with the type of pollution created by it given in Column II.
Column I (Activity)
Column II (Effect)
(i) Releasing gases to the atmosphere after burning waste material containing Sulphur.
(a) Water pollution
(ii) Using carbamates as pesticides
(b) Photochemical smog, damage to plant life, corrosion to building material, induce breathing problems, water pollution.
(iii) Using synthetic detergents for washing clothes
(c) Damaging ozone layer
(iv) Releasing gases produced by automobiles and factories in the atmosphere.
(d) May cause nerve diseases in humans.
(v) Using chlorofluorocarbon compounds for cleaning computer parts
(e) Classical smog, acid rain, water pollution, induce breathing problems, damage to buildings, corrosion of metals.
Match the activity given in Column I with the type of pollution created by it given in Column II.
|
Column I (Activity) |
Column II (Effect) |
|
(i) Releasing gases to the atmosphere after burning waste material containing Sulphur. |
(a) Water pollution |
|
(ii) Using carbamates as pesticides |
(b) Photochemical smog, damage to plant life, corrosion to building material, induce breathing problems, water pollution. |
|
(iii) Using synthetic detergents for washing clothes |
(c) Damaging ozone layer |
|
(iv) Releasing gases produced by automobiles and factories in the atmosphere. |
(d) May cause nerve diseases in humans. |
|
(v) Using chlorofluorocarbon compounds for cleaning computer parts |
(e) Classical smog, acid rain, water pollution, induce breathing problems, damage to buildings, corrosion of metals. |
This is a Matching Type Questions as classified in NCERT Exemplar
(i)→ (e); (ii)→ (d); (iii)→ (a); (iv)→ (b) ; (v)→ (c)
Upvote 
Match the pollutant(s) in Column I with the effect(s) in Column II.
Column I
Column II
(i) Oxides of sulphur
(a) Global warming
(ii) Nitrogen dioxide
(b) Damage to kidney
(iii) Carbon dioxide
(c) ‘Blue baby’ syndrome
(iv) Nitrate in drinking water
(d) Respiratory diseases
(v) Lead
(e) Red haze in traffic and congested areas.
Match the pollutant(s) in Column I with the effect(s) in Column II.
|
Column I |
Column II |
|
(i) Oxides of sulphur |
(a) Global warming |
|
(ii) Nitrogen dioxide |
(b) Damage to kidney |
|
(iii) Carbon dioxide |
(c) ‘Blue baby’ syndrome |
|
(iv) Nitrate in drinking water |
(d) Respiratory diseases |
|
(v) Lead |
(e) Red haze in traffic and congested areas. |
This is a Matching Type Questions as classified in NCERT Exemplar
(i)→ (d); (ii)→ (e); (iii)→ (a); (iv)→ (c) ; (v)→ (b)
Upvote In the following questions more than one option of Column I and Column II may match.
Match the terms given in Column I with the compounds given in Column II.
Column I
Column II
(i) Acid rain
(a) CHCl2 CHF2
(ii) Photochemical smog
(b) CO
(iii) Combination with haemoglobin
(c) CO2
(iv) Depletion of ozone layer
(d) SO2
(e) Unsaturated hydrocarbons
In the following questions more than one option of Column I and Column II may match.
Match the terms given in Column I with the compounds given in Column II.
|
Column I |
Column II |
|
(i) Acid rain |
(a) CHCl2 CHF2 |
|
(ii) Photochemical smog |
(b) CO |
|
(iii) Combination with haemoglobin |
(c) CO2 |
|
(iv) Depletion of ozone layer |
(d) SO2 |
|
(e) Unsaturated hydrocarbons |
This is a Matching Type Questions as classified in NCERT Exemplar
(i)→ (c); (ii)→ (d); (iii)→ (b); (iv)→ (a)
Upvote The consequences of global warming may be _________.
(i) Increase in average temperature of the earth
(ii) Melting of Himalayan Glaciers.
(iii) Increased biochemical oxygen demand.
(iv) Eutrophication.
The consequences of global warming may be _________.
(i) Increase in average temperature of the earth
(ii) Melting of Himalayan Glaciers.
(iii) Increased biochemical oxygen demand.
(iv) Eutrophication.
This is a Multiple choice Questions as classified in NCERT Exemplar
Options (i) and (ii) are correct since 75% of the solar energy reaching the earth is being absorbed by the earth's surface and this increases its temperature. The rest of the heat radiates back to the atmosphere. The average global t
Upvote The acids present in acid rain are _________.
(i) Peroxyacetyl nitrate
(ii) H2CO3
(iii) HNO3
(iv) H2SO4
The acids present in acid rain are _________.
(i) Peroxyacetyl nitrate
(ii) H2CO3
(iii) HNO3
(iv) H2SO4
This is a Multiple choice Questions as classified in NCERT Exemplar
Options (ii), (iii) and (iv) are correct since rainwater has a pH of 5.6 due to the presence of H+ ions formed by the reaction of rainwater with carbon dioxide present in the atmosphere. The reactions can be shown as-
H2O (l)+CO
Upvote Phosphate containing fertilizers cause water pollution. Addition of such compounds in water bodies causes __________.
(i) Enhanced growth of algae.
(ii) Decrease in amount of dissolved oxygen in water.
(iii) Deposition of calcium phosphate.
(iv) Increase in fish population.
Phosphate containing fertilizers cause water pollution. Addition of such compounds in water bodies causes __________.
(i) Enhanced growth of algae.
(ii) Decrease in amount of dissolved oxygen in water.
(iii) Deposition of calcium phosphate.
(iv) Increase in fish population.
This is a Multiple choice Questions as classified in NCERT Exemplar
Options (i) and (ii) are correct since fertilizers contain phosphates as additives. The addition of phosphates in water enhances the growth of the algae. Such profuse growth of algae covers the water surface and reduces the oxygen co
Upvote Which of the following conditions shows the polluted environment?
(i) pH of rainwater is 5.6.
(ii) Amount of carbon dioxide in the atmosphere is 0.03%.
(iii) Biochemical oxygen demand 10 ppm.
(iv) Eutrophication.
Which of the following conditions shows the polluted environment?
(i) pH of rainwater is 5.6.
(ii) Amount of carbon dioxide in the atmosphere is 0.03%.
(iii) Biochemical oxygen demand 10 ppm.
(iv) Eutrophication.
This is a Multiple choice Questions as classified in NCERT Exemplar
Options (iii) and (iv) are correct since clean water has BOD less than 5 ppm and polluted water has BOD value higher than 5 ppm. So, 10 BOD means highly polluted water. This process in which nutrient enriched water bodies support a
Upvote Which of the following practices will not come under green chemistry?
(i) If possible, making use of soap made of vegetable oils instead of using synthetic detergents.
(ii) Using H2O2for bleaching purpose instead of using chlorine based bleaching agents.
(iii) Using bicycle for travelling small distances instead of using petrol/diesel-based vehicles.
(iv) Using plastic cans for neatly storing substances.
Which of the following practices will not come under green chemistry?
(i) If possible, making use of soap made of vegetable oils instead of using synthetic detergents.
(ii) Using H2O2for bleaching purpose instead of using chlorine based bleaching agents.
(iii) Using bicycle for travelling small distances instead of using petrol/diesel-based vehicles.
(iv) Using plastic cans for neatly storing substances.
This is a Multiple choice Questions as classified in NCERT Exemplar
Option (iv)
Using plastic cans for neatly storing substances is correct since use of plastic cans for neatly storing substances will not come under green chemistry because plastic is non-biodegradable and causes pollution.
Upvote Which of the following statements is correct?
(i) Ozone hole is a hole formed in the stratosphere from which ozone oozes out.
(ii) Ozone hole is a hole formed in the troposphere from which ozone oozes out.
(iii) Ozone hole is thinning of the ozone layer of the stratosphere at some places.
(iv) Ozone hole means vanishing of the ozone layer around the earth completely.
Which of the following statements is correct?
(i) Ozone hole is a hole formed in the stratosphere from which ozone oozes out.
(ii) Ozone hole is a hole formed in the troposphere from which ozone oozes out.
(iii) Ozone hole is thinning of the ozone layer of the stratosphere at some places.
(iv) Ozone hole means vanishing of the ozone layer around the earth completely.
This is a Multiple choice Questions as classified in NCERT Exemplar
Option (iii)
Ozone hole is thinning of the ozone layer of the stratosphere at some places is correct since it was found that a unique set of conditions were responsible for the ozone hole. In summer, nitrogen dioxide and methane react
Upvote The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary air pollutants?
(i) CO
(ii) Hydrocarbon
(iii) Peroxyacetyl nitrate
(iv) NO
The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary air pollutants?
(i) CO
(ii) Hydrocarbon
(iii) Peroxyacetyl nitrate
(iv) NO
This is a Multiple choice Questions as classified in NCERT Exemplar
Option (iii) Peroxyacetyl nitrate is correct since,
NO2 (g) NO (g)+ [ O ] (i)
Oxygen atoms are very reactive
Upvote