☰
Menu
← Back to shiwamsclass.com
← Website
Home
Free quizzes
Free mock tests
All mock tests
CBSE Class 10
CBSE Class 12
Bihar Board 12
JEE Main
JEE Advanced
Chapter-wise PYQ
CBSE Class 10 PYQ
CBSE Class 12 PYQ
Bihar Board 12 PYQ
JEE Main PYQ
JEE Advanced PYQ
Sign in
← shiwamsclass.com
← CBSE Class 10 PYQ
Our Environment
CBSE Class 10 · Science · 24 past questions
Topic
Biodegradable and non-biodegradable waste
4
Energy flow and the 10 percent law
4
Biomagnification and pesticides
3
Food chains and trophic levels
3
Ecosystem components and balance
1
Ozone layer depletion
1
Level
Easy
3
Moderate
2
Year
2026
3
2025
0
2024
0
2023
0
3 of 24 ·
show all
Q2
2026
Organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic…
Try it →
Q8
2026
For Questions number 8 and 9, two statements are given — one labelled as Assertion (A) and the other labelled…
Try it →
Q10
Sample paper 2026-27
A fish living in a pond ecosystem feeds on small aquatic insects (larvae). These insect larvae, in turn, feed…
Try it →