Forests and Wastewater Management

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Forest Ecosystems and Biodiversity

Subtopic

Forest Ecosystems and Biodiversity under Forests and Wastewater Management for Grade 7 CBSE.

Preview questions (no answers)

1.
$Which of these can be called a 'natural purifier' of water and air?$
A. $Factories$
B. $Forests$
C. $Dams$
D. $Cities$
2.
$What is the primary function of the grit and sand removal tank in an STP?$
A. $To kill bacteria$
B. $To let heavy particles settle down$
C. $To add oxygen to water$
D. $To remove floating oil$
3.
$Poor sanitation and contaminated drinking water is the cause of a large number of diseases. Which of these is a water-borne disease?$
A. $Scurvy$
B. $Dysentery$
C. $Goitre$
D. $Anaemia$

Download the worksheet for Forests and Wastewater Management - Forest Ecosystems and Biodiversity to practice offline. It includes additional chapter-level practice questions.

Interdependence of Plants, Animals, and Decomposers

Subtopic

Interdependence of Plants, Animals, and Decomposers under Forests and Wastewater Management for Grade 7 CBSE.

About Topic & Revision

Preview questions (no answers)

1.
$What is 'activated sludge' primarily composed of?$
A. $Only water$
B. $About 95% water and active bacteria$
C. $Only sand and grit$
D. $Chemicals like chlorine$
2.
$Which of these is an example of an inorganic impurity in wastewater?$
A. $Human faeces$
B. $Fruit and vegetable peels$
C. $Phosphates$
D. $Pesticides$
3.
$How do animals help plants in a forest?$
A. $By eating all the leaves$
B. $By helping in pollination and seed dispersal$
C. $By producing carbon dioxide which plants don't need$
D. $By blocking sunlight$

Download the worksheet for Forests and Wastewater Management - Interdependence of Plants, Animals, and Decomposers to practice offline. It includes additional chapter-level practice questions.

Sewage and Wastewater Treatment

Subtopic

Sewage and Wastewater Treatment under Forests and Wastewater Management for Grade 7 CBSE.

About Topic & Revision

Preview questions (no answers)

1.
$Which of the following is a physical process in wastewater treatment?$
A. $Chlorination$
B. $Decomposition by bacteria$
C. $Filtration through bar screens$
D. $Ozone treatment$
2.
$What describes the interdependence of plants and animals in a forest?$
A. $CO_2$
B. $Plants provide food and oxygen to animals$
C. $Decomposers provide nutrients to soil for plants$
D. $All of the above$
3.
$Open drains are a breeding place for:$
A. $Tigers$
B. $Flies and mosquitoes$
C. $Fish$
D. $Elephants$

Download the worksheet for Forests and Wastewater Management - Sewage and Wastewater Treatment to practice offline. It includes additional chapter-level practice questions.

Sanitation and Disease Control

Subtopic

Sanitation and Disease Control under Forests and Wastewater Management for Grade 7 CBSE.

About Topic & Revision

Preview questions (no answers)

1.
$Which gas is used by plants during photosynthesis to produce food?$
A. $Oxygen$
B. $Carbon dioxide$
C. $Nitrogen$
D. $Hydrogen$
2.
$Which of these animals helps in the dispersal of seeds in a forest?$
A. $Fish$
B. $Birds$
C. $Earthworms$
D. $Spiders$
3.
$What is the name of the liquid that remains after sludge has been removed and the water has been treated with bacteria?$
A. $Clarified water$
B. $Sludge$
C. $Sewage$
D. $Sand$

Download the worksheet for Forests and Wastewater Management - Sanitation and Disease Control to practice offline. It includes additional chapter-level practice questions.

Forests and Wastewater Management

Forest Ecosystems and Biodiversity

❓Preview questions (no answers)

Interdependence of Plants, Animals, and Decomposers

❓Preview questions (no answers)

Sewage and Wastewater Treatment

❓Preview questions (no answers)

Sanitation and Disease Control

❓Preview questions (no answers)

Preview questions (no answers)

Preview questions (no answers)

Preview questions (no answers)

Preview questions (no answers)