Exam Category
Environment
Showing 169 questions & PYQs organized by topics.
Environment
01
Which action taken by us can directly reduce biological magni
RRB PYQ MCQ
02
If the ozone layer becomes thinner , which of the following could…
RRB PYQ MCQ
03
What is the role of decomposers in an ecosystem?
RRB PYQ MCQ
04
Which of the following chemical compounds is mainly responsible for ozone depletion…
RRB PYQ MCQ
05
Which group of organisms depends solely and directly on producers for food?
RRB PYQ MCQ
06
The primary harmful e
RRB PYQ MCQ
07
A city is planning to build a new power plant and is…
RRB PYQ MCQ
08
Which of the following is NOT biodegradable?
RRB PYQ MCQ
09
All of the following are ways to restore Earth’s natural systems EXCEPT,…
RRB PYQ MCQ
10
Which of the following best defines an ecosystem?
RRB PYQ MCQ