Environmental Science-13

CTET Environmental Science MCQs

1. We have days and nights because of:
(a) Earth’s rotation 
(b) Earth’s revolution
(c) Sun’s rotation
(d) Sun’s revolution

2. The tail of flying birds acts as rudder. By this statement we can understand that the tail acts as:
(a) A part of the body which is beautiful
(b) A part which wards off flies and mosquitoes
(c) A part which guides the bird while flying
(d) A part which helps the bird take off



3. The combination of which of the following soils is best for plant growth
(a) Clay, sand & gravel
(b) Humus, clay & gravel
(c) Sand, humus & gravel
(d) Humus, sand & clay



4. Which of the following does not belong to the group formed by the other trees?
(a) Mango
(b) Coconut
(c) Tamarind
(d) Neem

5. In spring which of the following occurs?
(a) The days are longer & nights are shorter
(b) The nights are longer & days are shorter
(c) Days and nights are of almost equal duration
(d) None of the above

6. Which of the following plays an important role in the cause of rainfall
(a) Evaporation
(b) Condensation
(c) Both evaporation & condensation
(c) Filteration

7. A human body consists of ________ number of bones
(a) 205
(b) 206
(c) 207
(d) 208

8. Sanjay has a sugar cube in her mouth, in which part of his tongue, will the cube be sweetest?
(a) Front
(b) Middle
(c) Rear
(d) Sides

9. The mosquito repellent (coils, mats and liquids) that we generally use in our homes are:
(a) Pesticides
(b) Fertilizers
(c) Sedatives
(d) Insecticides

10. Cows have strong grinding teeth at the back of the mouth, but they cannot eat the flesh of the of other animals. This is because:
(a) They do not need to eat the flesh
(b) They don’t have strong grinding teeth at the front
(c) They don’t have long sharp pointed teeth
(d) They dislike eating flesh

11. During summer the earth is
(a) Closer to the sun
(b) Away from the sun
(c) Closer to the moon
(d) Away from the moon

12. Non-green plants like mushroom can’t make their own food because:
(a) They are too small
(b) They lack chlorophyll
(c) They lack photo-tropism
(d) They lack roots to suck water

13. Most of the reptiles like snakes, crocodiles, etc. eat their food by:
(a) Tearing its flesh
(b) A process called cud chewing
(c) Swallowing it as a whole
(d) Sucking its blood

14. How much time does the earth take to complete one rotation?
(a) 24 hrs.
(b) 1 day
(c) 1 year
(d) Both A & B

15. How many muscles are there in a human body?
(a) 600
(b) 700
(c) 800
(d) 900

16. Which of the following is not a part of the excretory system?
(a) Eyes
(b) Kidneys
(c) Lungs
(d) Skin

17. During breathing which gas is most required by us?
(a) Hydrogen
(b) Oxygen
(c) Carondioxide
(d) Nitrogen

18. Which part of the body controls all the other organs?
(a) Heart
(b) Eyes
(c) Brain
(d) Stomach

19. Flamingos have ______ kind of feet
(a) Perching
(b) Wading
(c) Webbed
(d) None of these

20. The tomato plant falls under the category of:
(a) Herbs
(b) Shrubs
(c) Trees
(d) Grass

21. Which Indian scientist has got a Nobel Prize for his contribution in physics?
(a) Rabindra Nath Tagore
(b) Mahatma Gandhi
(c) Albert Einstein
(d) Hargovind Khurana

22. When some sugar is dissolved in a glass of water, the water level:
(a) Increases
(b) Decreases
(c) Remains the same
(d) None of the above

23. The nature of relationship between condensation & evaporation is:
(a) They are the same
(b) They are opposite
(c) They are similar but not in all respects
(d) None of the above

24. We slip very easily on a wet floor because
(a) Water reduces the friction
(b) Water increases the friction
(c) We slip because we lose our balance
(d) None of the above

25. The process of solid changing into liquid upon the supply of heat is called:
(a) Condensation
(b) Evaporation
(c) Melting
(d) Boiling

26. When we exhale, our lungs have to:
(a) Contract
(b) Expand
(c) Be still
(d) None of the above

27. Our head is made up of only one movable bone; it is called:
(a) Skull
(b) Cranium
(c) Jawbone
(d) Collarbone

28. The young ones of the frog are called:
(a) Young frogs
(b) Frog cubs
(c) Puppies
(d) Tadpoles

29. Paper is mainly made up of:
(a) Cellulose & starch
(b) Polythene & cotton
(c) Bamboo & grass
(d) Sunflower & Maize

30. Our sun is:
(a) Planet
(b) Satellite
(c) Comet
(d) Star

ANSWERS

1. (a) 2. (c) 3. (d) 4. (b) 5. (c)
6. (c) 7.(b) 8. (a) 9. (d) 10. (c)
11. (a) 12. (b) 13. (c) 14. (d) 15. (a)
16. (a) 17. (b) 18. (c) 19. (b) 20. (a)
21. (d) 22. (c) 23. (b) 24. (a) 25. (c)
26. (a) 27. (c) 28. (d) 29. (c) 30. (d)