☰
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
Energy flow and the 10 percent law
3
Food chains and trophic levels
3
Biodegradable and non-biodegradable waste
2
Biomagnification and pesticides
2
Ecosystem components and balance
1
Ozone layer depletion
1
Level
Easy
2
Moderate
1
Year
2026
3
2025
1
2024
1
2023
0
3 of 24 ·
show all
Q7
2026
Which of the following limits the number of trophic levels in a food chain ?
Try it →
Q11
Sample paper 2026-27
The following two questions consist of two statements – Assertion (A) and Reason (R). Answer these questions…
Try it →
Q12
Sample paper 2026-27
Study the food chain given below…
(with a figure)
Try it →