CBSE Class 10 Science Chapter 15 Our Environment Multiple Choice Questions with Answers. MCQ Class 10 Science Our Environment with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 10 Science Our Environment MCQs with Answers to know their preparation level.
MCQ Class 10 Science Our Environment with Answers - Set - 5
Question 1:
Assertion: Vegetarian food habit is more beneficial to organisms.
Reason: Only 10% energy is available as food from one trophic level to next.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
Correct Answer – (A)
Question 2 :
What will happen if all the deer are killed in the given food chain?
Grass → Deer → Lion
(a) The population of grass decreases.
(b) The population of lions increases.
(c) The population of lions remains unchanged.
(d) The population of lions decreases and grass increases.
Correct Answer – (D)
Question 3 :
The depletion of the ozone layer causes
(a) global warming
(b) earthquakes
(c) increased UV radiations
(d) acid rain
Correct Answer – (C)
Question 4 :
Which of the following chemicals causes depletion of the ozone layer?
(a) Carbon tetrachloride
(b) Methane
(c) Chloro fluoro carbon
(d) Carbon monoxide
Correct Answer – (C)
Question 5 :
Which of the following is an abiotic component of an ecosystem?
(a) Humus
(b) Bacteria
(c) Plants
(d) Fungi
Correct Answer – (A)
MCQ Class 10 Science Our Environment with Answers
Question 6 :
Which of the two in the following sets belong to the same trophic level?
(a) Grass; Grasshopper
(b) Goat; Spider
(c) Hawk ; Rat
(d) Frog ; Lizard
Correct Answer – (D)
Question 7 :
In the given foodchain if the amount of energy at the fourth trophic level is 4 kJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake
(a) 4 kJ
(b) 40 kJ
(c) 400 kJ
(d) 4000 kJ
Correct Answer – (D)
Question 8 :
In a food chain, the third trophic level is always occupied by
(a) herbivore
(b) carnivore
(c) decomposer
(d) producer
Correct Answer – (B)
Question 9 :
Which one of the following pairs belong to the category of primary consumers?
(a) Eagle and snake
(b) Grasshoppers & cattle
(c) Snake and frog
(d) Water beetles & fish
Correct Answer – (B)
Question 10 :
Which of the following is biodegradable?
(a) Aluminium can
(b) Polythene bag
(c) Cowdung
(d) DDT
Correct Answer – (C)
- NCERT Solutions Class 10 Science Chapter 8 : How Do Organisms Reproduce?
- NCERT Solutions Class 10 Science Chapter 9 : Heredity and Evolution
- NCERT Solutions Class 10 Science Chapter 10 : Light Reflection and Refraction
- NCERT Solutions Class 10 Science Chapter 11 : Human Eye and Colourful World
- NCERT Solutions Class 10 Science Chapter 12 : Electricity
- NCERT Solutions Class 10 Science Chapter 13 : Magnetic Effects of Electric Current
- NCERT Solutions Class 10 Science Chapter 14 : Sources of Energy
- NCERT Solutions Class 10 Science Chapter 15 : Our Environment
- NCERT Solutions Class 10 Science Chapter 16 : Management of Natural Resources
- NCERT Solutions Class 10 Science Textbook Download
