Our Environment Class 10 Science MCQ Quiz – Test Your Knowledge

Are you ready to test your knowledge of Our Environment? This chapter focuses on ecosystem components, food chains, trophic levels, ozone layer depletion, and waste management—important topics for your CBSE Class 10 Science exam.

About the Quiz

Chapter Name: Our Environment
Subject: Science (Biology)
Book: NCERT Class 10 Science
Question Type: Multiple Choice Questions (MCQs)
Leaderboard: Yes (Compete with Others!)

Why Take This Quiz?

✔ Helps in quick revision for board exams
✔ Covers important NCERT-based questions
✔ Leaderboard feature to track your performance

Click Below to Start the Quiz!

Chapter 13 - Our Environment

1 / 15

If a deer is eaten by a tiger, then the energy transfer will be from

Secondary consumer to environment

Producer to primary consumer

Primary consumer to secondary consumer

Producer to decomposer

2 / 15

Why do all food chains start with plants?

Because plants can produce their own energy

Because plants are nutritious

Because plants are easily grown

Because plants do not require energy

3 / 15

Assertion: The food chain is responsible for the entry of harmful chemicals into our bodies.

Reason: The length and complexity of food chains vary greatly.

Both A and R are true, but R is not the correct explanation of the assertion.

Both A and R are true, and R is the correct explanation of the assertion.

A is false, but R is true.

A is true, but R is false.

4 / 15

Observe the food web and answer the questions given below:

The mussel can be described as

Secondary consumer

Primary consumer

Decomposer

Producers

5 / 15

Which trophic level is incorrectly defined?

Decomposers – microbial heterotrophs

Herbivores – primary consumers

Carnivores – Secondary or tertiary consumers

Omnivores – molds, yeast, and mushrooms

6 / 15

The given figure best represents:

food chain in forest, grassland and pond

Food chain in grassland, pond, and forest

Food chain in pond, forest, and grassland

Food chain in forest, pond, and grassland

Food chain in forest, grassland, and pond

7 / 15

In the food web, what two organisms are competing for food?

A and B

D and F

B and D

A and C

8 / 15

Assertion: A greater number of individuals are present in lower trophic levels.

Reason: The flow of energy is unidirectional.

Both A and R are true, and R is the correct explanation of the assertion.

A is false, but R is true.

A is true, but R is false.

Both A and R are true, but R is not the correct explanation of the assertion.

9 / 15

The decomposers are not included in the food chain. The correct reason for the same is because decomposers:

Do not break down organic compounds

Act at every trophic level of the food chain

Convert organic material to inorganic forms

Release enzymes outside their body to convert organic material to inorganic forms

10 / 15

Which of the following features relates to biodegradable substances?

Persist in the environment for long time

Remain inert

Broken down by biological processes

May harm the ecosystem

11 / 15

If Ravi is consuming curd/yogurt for lunch, which trophic level in a food chain he should be considered as occupying?

Third trophic level

Fourth trophic level

First trophic level

Second trophic level

12 / 15

The chemicals that are non-degradable, get progressively accumulated at each trophic level, and their concentration is seen maximum in the bodies of top consumers. This phenomenon is known as:

Pollution

Eutrophication

Accumulation

Biomagnification

13 / 15

Assertion: Biodegradable substances result in the formation of compost and natural replenishment.

Reason: It is due to the breakdown of complex inorganic substances into simple organic substances.

Both A and R are true, and R is not the correct explanation of A.

A is false but R is true.

A is true but R is false.

Both A and R are true, and R is the correct explanation of A.

14 / 15

In 1987, an agreement was formulated by the United Nations Environment Programme (UNEP) to freeze the production of “X” to prevent the depletion of “Y”. “X” and “Y” respectively referred to here are:

CFCs; Ozone

Ozone; CFCs

UV rays; Diatomic oxygen

CFCs; rays UV

15 / 15

Which of the following organisms convert organic material to inorganic forms?

Producers

Herbivores

Decomposers

Carnivores

Your score is

The average score is 60%

Leaderboard – Top Scorers

Check out the highest scorers below!

Pos.	Name	Score	Duration	Points
1	Priya	100 %	1 minutes 10 seconds	15
2	Abhinav	100 %	1 minutes 23 seconds	15
3	Sa	100 %	1 minutes 26 seconds	15
4	Varun	100 %	1 minutes 37 seconds	15
5	Priya Singh	100 %	1 minutes 42 seconds	15
6	Priya Singh	100 %	1 minutes 47 seconds	15
7	varun	100 %	1 minutes 47 seconds	15
8	Nirun	100 %	1 minutes 51 seconds	15
9	Anmol	100 %	2 minutes 2 seconds	15
10	Manu Manvith	100 %	2 minutes 5 seconds	15
11	Veer	100 %	2 minutes 9 seconds	15
12	,,,,	100 %	2 minutes 10 seconds	15
13	Arjun	100 %	2 minutes 20 seconds	15
14	Manvith	100 %	3 minutes 1 seconds	15
15	Shree	100 %	3 minutes 23 seconds	15
16	Pritha	100 %	3 minutes 33 seconds	15
17	vinay	100 %	4 minutes 59 seconds	15
18	varun	100 %	5 minutes 38 seconds	15
19	Priya Singh	100 %	8 minutes 17 seconds	15
20	Prashant Kumar Rai (VIII-C)	93 %	1 minutes 27 seconds	14
21	Akarsh	93 %	1 minutes 30 seconds	14
22	Vivian	93 %	1 minutes 35 seconds	14
23	Priya	93 %	2 minutes 8 seconds	14
24	Varun	93 %	2 minutes 8 seconds	14
25	Priya Singh	93 %	2 minutes 12 seconds	14
26	Priya Singh	93 %	2 minutes 25 seconds	14
27	Ashish	93 %	2 minutes 34 seconds	14
28	/	93 %	2 minutes 37 seconds	14
29	Judith	93 %	2 minutes 46 seconds	14
30	Nirun	93 %	2 minutes 46 seconds	14
31	Mahi	93 %	2 minutes 52 seconds	14
32	Harshita	93 %	3 minutes 11 seconds	14
33	.	93 %	3 minutes 22 seconds	14
34	Gaurav	93 %	5 minutes 19 seconds	14
35	Priya Singh	93 %	7 minutes 1 seconds	14
36	Sivangi	93 %	10 minutes 51 seconds	14
37	Iqra Nafees	93 %	12 minutes 20 seconds	14
38	varun	93 %	31 minutes 21 seconds	14
39	Jkl	87 %	1 minutes 39 seconds	13
40	Hi	87 %	1 minutes 57 seconds	13
41	Shabby	87 %	2 minutes 8 seconds	13
42	Amal Roshna	87 %	2 minutes 9 seconds	13
43	Soumya	87 %	2 minutes 15 seconds	13
44	Anaya	87 %	2 minutes 45 seconds	13
45	Varun	87 %	3 minutes	13
46	.	87 %	3 minutes 11 seconds	13
47	Kajal	87 %	3 minutes 16 seconds	13
48	Cc	87 %	3 minutes 18 seconds	13
49	Anushka	87 %	3 minutes 19 seconds	13
50	Anmol	87 %	3 minutes 22 seconds	13
51	golu chaudhry	87 %	3 minutes 24 seconds	13
52	A	87 %	3 minutes 56 seconds	13
53	Anu	87 %	3 minutes 58 seconds	13
54	Praveen	87 %	4 minutes 11 seconds	13
55	Abhishek Kumar	87 %	4 minutes 15 seconds	13
56	Judith	87 %	4 minutes 46 seconds	13
57	Shalu	87 %	4 minutes 52 seconds	13
58	M	87 %	5 minutes 36 seconds	13
59	Shraddha	87 %	5 minutes 36 seconds	13
60	gfyfyt	87 %	5 minutes 57 seconds	13
61	Harahul	87 %	6 minutes 26 seconds	13
62	H	87 %	8 minutes 11 seconds	13
63	akki	87 %	17 minutes 41 seconds	13
64	Akarsh	80 %	1 minutes 23 seconds	12
65	Shreyansh Singh	80 %	1 minutes 32 seconds	12
66	Akarsh	80 %	1 minutes 40 seconds	12
67	Shreyansh Singh	80 %	2 minutes 17 seconds	12
68	Pritha	80 %	2 minutes 41 seconds	12
69	Shreya R Gowda	80 %	3 minutes 14 seconds	12
70	Aakriti	80 %	3 minutes 15 seconds	12
71	pakhee	80 %	3 minutes 18 seconds	12
72	Siva	80 %	3 minutes 31 seconds	12
73	Vinayak	80 %	3 minutes 49 seconds	12
74	ARR	80 %	3 minutes 58 seconds	12
75	Dj	80 %	4 minutes 2 seconds	12
76	Trinay	80 %	4 minutes 2 seconds	12
77	Hariharan	80 %	4 minutes 30 seconds	12
78	Veronica	80 %	4 minutes 31 seconds	12
79	Anishpanday	80 %	5 minutes 5 seconds	12
80	Maliha	80 %	5 minutes 49 seconds	12
81	Ari	80 %	7 minutes 23 seconds	12
82	Raj	80 %	7 minutes 27 seconds	12
83	Ssdddf	80 %	8 minutes 34 seconds	12
84	Rishith	80 %	9 minutes 4 seconds	12
85	Abhinav Singh	80 %	9 minutes 17 seconds	12
86	Sonam	80 %	16 minutes 39 seconds	12
87	De	80 %	1 hours 49 minutes 4 seconds	12
88	Manvi	73 %	1 minutes 26 seconds	11
89	Sri	73 %	1 minutes 44 seconds	11
90	Namrta	73 %	1 minutes 52 seconds	11
91	Rv	73 %	1 minutes 52 seconds	11
92	Ashish	73 %	2 minutes 1 seconds	11
93	Vighneshwari	73 %	2 minutes 10 seconds	11
94	Vcvj	73 %	3 minutes 7 seconds	11
95	u	73 %	3 minutes 7 seconds	11
96	Ishu	73 %	3 minutes 10 seconds	11
97	Shree	73 %	3 minutes 13 seconds	11
98	fire	73 %	3 minutes 17 seconds	11
99	Harsha	73 %	3 minutes 22 seconds	11
100	Vir	73 %	3 minutes 41 seconds	11
101	Dhhritii	73 %	3 minutes 53 seconds	11
102	Akhil yadav	73 %	4 minutes 5 seconds	11
103	Vivek Kumar	73 %	4 minutes 10 seconds	11
104	Vivaan	73 %	4 minutes 32 seconds	11
105	Kj	73 %	4 minutes 43 seconds	11
106	Ravi	73 %	5 minutes 3 seconds	11
107	Priyanshi Yadav	73 %	5 minutes 20 seconds	11
108	Rahi	73 %	5 minutes 20 seconds	11
109	Vaibhav Goel	73 %	5 minutes 34 seconds	11
110	Trinay	73 %	5 minutes 38 seconds	11
111	Shree	73 %	5 minutes 39 seconds	11
112	goluswamy	73 %	5 minutes 45 seconds	11
113	Sahasra Pagidimarri	73 %	5 minutes 45 seconds	11
114	Ghdx	73 %	5 minutes 50 seconds	11
115	jeyvanth	73 %	5 minutes 55 seconds	11
116	Harsha	73 %	5 minutes 58 seconds	11
117	Diksha	73 %	6 minutes	11
118	Ari	73 %	6 minutes 2 seconds	11
119	Aakriti	73 %	6 minutes 4 seconds	11
120	Deepika	73 %	6 minutes 35 seconds	11
121	I	73 %	6 minutes 39 seconds	11
122	GURNOOR	73 %	6 minutes 39 seconds	11
123	golu chaudhry	73 %	6 minutes 51 seconds	11
124	Gaurav Dubey	73 %	7 minutes 34 seconds	11
125	DIYA DIJESH	73 %	7 minutes 49 seconds	11
126	Himanshu	73 %	8 minutes 11 seconds	11
127	F	73 %	8 minutes 13 seconds	11
128	akash	73 %	8 minutes 16 seconds	11
129	Lana	73 %	8 minutes 19 seconds	11
130	Arjun	73 %	8 minutes 23 seconds	11
131	Himanshu	73 %	8 minutes 38 seconds	11
132	Preeti	73 %	8 minutes 59 seconds	11
133	jai	73 %	9 minutes 5 seconds	11
134	Pritha	73 %	9 minutes 42 seconds	11
135	Vighneshwari	67 %	1 minutes 50 seconds	10
136	yo	67 %	1 minutes 59 seconds	10
137	Sahil	67 %	2 minutes 41 seconds	10
138	Shreyansh Singh	67 %	3 minutes 5 seconds	10
139	Nikhil	67 %	3 minutes 6 seconds	10
140	M,ydhz	67 %	3 minutes 32 seconds	10
141	Oufwqeufb	67 %	3 minutes 37 seconds	10
142	Arushi	67 %	3 minutes 42 seconds	10
143	Rukhsar	67 %	4 minutes 9 seconds	10
144	Vivek Kumar	67 %	4 minutes 15 seconds	10
145	Dilasa	67 %	4 minutes 25 seconds	10
146	Kritika	67 %	5 minutes 5 seconds	10
147	Nirun	67 %	5 minutes 19 seconds	10
148	Amal Roshna	67 %	5 minutes 20 seconds	10
149	Shabby	67 %	5 minutes 33 seconds	10
150	Sahil	67 %	5 minutes 33 seconds	10
151	M.Mary Senofiah	67 %	5 minutes 40 seconds	10
152	Mahi sharma	67 %	5 minutes 41 seconds	10
153	Maya	67 %	6 minutes 12 seconds	10
154	kk	67 %	6 minutes 18 seconds	10
155	A	67 %	6 minutes 39 seconds	10
156	Mamta	67 %	6 minutes 48 seconds	10
157	garima	67 %	6 minutes 57 seconds	10
158	Manvith	67 %	6 minutes 57 seconds	10
159	Anupriya patel	67 %	7 minutes 5 seconds	10
160	Shravya	67 %	7 minutes 29 seconds	10
161	g	67 %	7 minutes 42 seconds	10
162	Adarsh	67 %	8 minutes 20 seconds	10
163	Pritam Ghosh	67 %	9 minutes 32 seconds	10
164	mmm	67 %	13 minutes 16 seconds	10
165	Sneha	67 %	33 minutes 15 seconds	10
166	Samarth	60 %	1 minutes 58 seconds	9
167	Manisha	60 %	2 minutes	9
168	Kashish	60 %	2 minutes 7 seconds	9
169	Aditya dubey	60 %	3 minutes 9 seconds	9
170	Rock it 🤛🏻	60 %	3 minutes 26 seconds	9
171	Saanvi	60 %	3 minutes 29 seconds	9
172	Sahaf ahmad	60 %	3 minutes 33 seconds	9
173	Anne	60 %	3 minutes 34 seconds	9
174	Dhriti	60 %	3 minutes 35 seconds	9
175	..	60 %	3 minutes 46 seconds	9
176	R	60 %	3 minutes 47 seconds	9
177	Pravin	60 %	4 minutes	9
178	Umar	60 %	4 minutes 4 seconds	9
179	yo	60 %	4 minutes 7 seconds	9
180	Prachi	60 %	4 minutes 12 seconds	9
181	Hsvf	60 %	4 minutes 27 seconds	9
182	YUVRAJ JOGSAN	60 %	4 minutes 27 seconds	9
183	Yashika	60 %	4 minutes 40 seconds	9
184	Komal	60 %	4 minutes 56 seconds	9
185	Sri	60 %	5 minutes 7 seconds	9
186	Shatakshi	60 %	5 minutes 19 seconds	9
187	Avantika	60 %	5 minutes 45 seconds	9
188	Nikhil	60 %	5 minutes 51 seconds	9
189	Gf	60 %	5 minutes 58 seconds	9
190	Aditya yadav	60 %	6 minutes 33 seconds	9
191	Anurag soni	60 %	7 minutes 3 seconds	9
192	Bably kimari	60 %	7 minutes 23 seconds	9
193	Bhoomika	60 %	7 minutes 55 seconds	9
194	Kamini	60 %	7 minutes 58 seconds	9
195	Vaibhav Goel	60 %	8 minutes 6 seconds	9
196	Abhishek	60 %	8 minutes 14 seconds	9
197	Deepesh	60 %	8 minutes 58 seconds	9
198	Prachi verma	60 %	9 minutes 57 seconds	9
199	Shivendra Singh Sengar	60 %	10 minutes 4 seconds	9
200	Srushti	60 %	11 minutes 16 seconds	9

Key Topics Covered in the Quiz

✔ Ecosystem and Its Components
✔ Food Chain & Food Web
✔ Trophic Levels and Energy Flow
✔ Biodegradable & Non-Biodegradable Substances
✔ Ozone Layer & Its Depletion
✔ Waste Management & Sustainable Development

More Class 10 Science MCQ Quizzes

Take the quiz now and strengthen your concepts of Our Environment!

WhatsApp Group

Join Now

Telegram Group

Join Now

Spread the love

Also See: The Making of a Global World: A+ Class 10 Notes

About the Quiz

Why Take This Quiz?

Leaderboard – Top Scorers

Key Topics Covered in the Quiz

More Class 10 Science MCQ Quizzes

Related posts:

Leave a Comment Cancel reply