Our Environment
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
Which of the following is the correct order in a terrestrial food chain?
A.Grass Grasshopper Frog Snake
B.Snake Frog Grasshopper Grass
C.Grasshopper Grass Snake Frog
D.Frog Snake Grass Grasshopper
- 2.
In an ecosystem, the flow of nutrients is:
A.Unidirectional
B.Cyclic
C.Irreversible
D.Random
- 3.
Which of the following can be decomposed by biological processes?
A.Glass
B.Vegetable peels
C.Steel
D.PVC
Download the worksheet for Our Environment - Eco-system to practice offline. It includes additional chapter-level practice questions.
Environmental problems
SubtopicEnvironmental problems under Our Environment for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which of these is a major component of sewage that can be decomposed naturally?
A.Plastic bottles
B.Organic kitchen waste
C.Metal pins
D.Polythene bags
- 2.
Which of the following is considered a 'Clean' energy source that doesn't contribute significantly to the greenhouse effect?
A.Coal
B.Petroleum
C.Solar energy
D.Natural gas
- 3.
In the context of waste management, what does the term 'Recycle' mean?
A.Using a product again for the same purpose
B.Processing waste materials into new products
C.Reducing the amount of waste generated
D.Burying waste deep in the ground
Download the worksheet for Our Environment - Environmental problems to practice offline. It includes additional chapter-level practice questions.
Ozone depletion
SubtopicOzone depletion under Our Environment for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Ozone depletion is a global environmental issue because:
A.It only affects people in cities
B.CFCs stay in one place
C.UV radiation affects the entire planet
D.Ozone is only found in one country
- 2.
CFCs were widely used as which of the following in aerosol sprays?
A.Fuel
B.Propellants
C.Water vapor
D.Pigments
- 3.
When an oxygen atom () joins with an oxygen molecule (), what is the resulting product?
A.B.C.D.
Download the worksheet for Our Environment - Ozone depletion to practice offline. It includes additional chapter-level practice questions.
Waste production and their solutions
SubtopicWaste production and their solutions under Our Environment for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which of the following items is biodegradable but takes a relatively longer time than food waste to decompose?
A.Plastic straw
B.Wood
C.Glass bottle
D.Aluminum foil
- 2.
What is the primary goal of the 'Clean India Mission' (Swachh Bharat Abhiyan) regarding waste?
A.To increase plastic production
B.To achieve better waste management and sanitation
C.To build more factories
D.To stop the use of paper
- 3.
How does recycling paper help the environment?
A.It requires more trees to be cut
B.It saves trees and reduces energy consumption
C.It produces more plastic waste
D.It has no effect on the environment
Download the worksheet for Our Environment - Waste production and their solutions to practice offline. It includes additional chapter-level practice questions.
Biodegradable and non-biodegradable substances
SubtopicBiodegradable and non-biodegradable substances under Our Environment for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Which of the following is a non-biodegradable material found in the kitchen?
A.Potato skins
B.Expired spices
C.Empty tin cans
D.Rotten fruit
- 2.
Waste that remains inert and does not react with the environment biologically is:
A.Biodegradable
B.Non-biodegradable
C.Green waste
D.Biotic
- 3.
Identify the biodegradable material among the following:
A.Plastic bucket
B.Iron nails
C.Cow dung
D.Glass marble
Download the worksheet for Our Environment - Biodegradable and non-biodegradable substances to practice offline. It includes additional chapter-level practice questions.