CBSE Class 3 Science Resources and Pollution MCQs

Question. What is this 

(a) Solar cooker
(b) Wind mill
(c) Solar water heater
(d) Computer
Answer: C

Question. Pick the odd one out. 
(a) Coal
(b) Petroleum
(c) Air
(d) Natural gas
Answer: C
Explanation: Only air is renewable all others are non renewable.

Question. Renewable resource are also called __________ resources.
(a) white energy
(b) blue energy
(c) green energy
(d) black energy
Answer: C
Explanation: Renewable resource are called green energy resources. 

Question. While waiting at red light on the traffic signal we should __________.
(a) switch off the car engine.
(b) run the car very fast.
(c) listen loud music
(d) none of the above.
Answer: A 

Question. Non renewable resources are made ______ .
(a) from dead animals and plants
(b) in factory
(c) at home
(d) any where
Answer: A

Question. Complete the following web chart. 

Choose the correct option.
(a) A-Flowers, B-Carbon monoxide, C-Hydrogen
(b) A-Leaves, B-Nitrogen, C-Hydrogen
(c) A-Water vapour, B-Nitrogen, C-Carbon dioxide
(d) A-Water vapour, B-Nitrogen, C-Hydrogen
Answer: C

Question. We can use non renewable resources in any quantity.
(a) correct
(b) incorrect
(c) partially true
(d) none of these
Answer: B
Explanation: We have to use the non renewable resource carefully as they are limited in amount. 

Question. What is this? 

(a) Pressure cooker
(b) Wind mill
(c) Mobile
(d) Car
Answer: B

Question. Match the column I with column II and select the correct option.
     Column I                 Column II
(A) Noise pollution     1. Bathing in rivers with soap
(B) Air pollution          2. Factory chimneys
(C) Water pollution    3. Burning wood
                                  4. Unnecessary blowing horns
                                  5. Throwing untreated waste in water bodies
(a) (A) - 2, 3; (B) - 5, (C) - 4, 1
(b) (A) – 1, 5; (B) – 2, 3; (C) – 4
(c) (A) – 4; (B) – 2, 3; (C) – 1, 5
(d) (A) – 4; (B) – 1, 5; (C) – 2, 3
Answer: C

Question. Which one of the following is a non renewable resource?
(a) Coal
(b) Oil
(c) Natural gas
(d) All of these
Answer: D

Question. Which of these are wrongly classified.
Renewable Non-renewable
source of energy source of energy
(a) Rivers Solar enegy
(b) Wind Coal
(c) Water Petrol
(d) Tides Diesel
Answer: A
Explanation: Solar energy is not a non-renewable source of energy. It is a renewable source of energy.
Renewable source of energy is defined as the energy which can be renewed easily but non-renewable source of energy is defined the energy which cannot be renewed easily. If takes a long period of time to renew itself, e.g., as coal, petrol, diesel etc.

Question. The wood to make table comes from __________. 
(a) trees
(b) well
(c) the table comes as it is
(d) none of these
Answer: A
Explanation: Trees are cut to make wooden table. 

Question. Trees help in reducing the pollution of our environment. Lakhs of trees are planted by people in the month of July every year. This occasion is called
(a) Forest Conservation Day
(b) Wild life Week
(c) Plantation Month
(d) Van Mahotsav
Answer: D
Explanation: Van Mahotsav is the occasion on which lakhs of trees are planted by the people.
It is celebrated on first week of July every year. It was started in 1950 by Dr. Munshi.

Question. What is the use of solar energy for plants? 
(a) They like the sunlight
(b) They use it in preparing their food
(c) It gives colour to them
(d) All of these
Answer: B

Question. We should use the non renewable resources carefully as: 
(a) they are limited in quantity
(b) they take time to form
(c) both a and b
(d) none of these
Answer: C

Question. Out of these which is used for medicinal purposes?
(a) Rubber
(b) Steel
(c) Tulsi
(d) Soil
Answer: C
Explanation: The plant of Tulsi has medicinal use. 

Question. A solar cooker uses solar energy to __________.
(a) Heat water
(b) Wash the clothes
(c) Cook the food
(d) Give water
Answer: C
Explanation: Solar cooker cooks the food by using solar energy. 

Question. Renewable resources are those __________.
(a) which can be eaten
(b) which can be reproduced by nature
(c) both a and b
(d) none of these
Answer: B
Explanation: Renewable resources are those which can be reproduced by nature.

Question. The petrol which we use in our vehicles is a ___________.
(a) renewable resource
(b) non renewable resource
(c) both a and b
(d) none of these
Answer: B
Explanation: Petrol is non renewable resource. 

Question. Which natural resource is used in wind mill?
(a) Water
(b) Solar energy
(c) Air
(d) Plants
Answer: C
Explanation: The wind mill uses air to produce electricity. 

Question. Forests give _____ to the atmosphere. 
(a) Carbon dioxide
(b) Oxygen
(c) Light
(d) All of these
Answer: B

Question. Out of these what do living things not need to live?
(a) Air
(b) Bicycle
(c) Water
(d) Food
Answer: B
Explanation: Living things do not need bicycle to live. 

Question. Which one of the following is a renewable resource?
(a) Solar power
(b) Soil
(c) Trees
(d) All of these
Answer: D

Question. At night plants take in X and animals take in Y, during breathing. Select the option that correctly identifies X and Y. 
            X         Y
(a) Oxygen Oxygen
(b) Carbon dioxide Carbon dioxide
(c) Carbon dioxide Oxygen
(d) Oxygen Carbon dioxide
Answer: A
Explanation: At night plants take in oxygen and release carbon dioxide. While at day time, plants take in carbon dioxide and release oxygen. Animals on the other hand, always take in oxygen and release carbon dioxide. 

Question. Various materials which are obtained from nature are called natural resources.
Which of the following is not a natural resource? 
(a) Minerals
(b) Water
(c) Soil
(d) Plastic
Answer: D
Explanation: Plastic is not a natural resource. It is a man-made resource. Natural resource is a resource which is provided by nature to the earth. They occur in nature.
Plastic is not a natural resource. It is made in factories for the use of human welfare.

Question. The Taj Mahal at Agra is a beautiful historical monument made of pure, white marble. But, due to some causes, Taj Mahal area is discolouring its white marble and also corroding it slowly. The monument is being affected by which type of pollution? 

(a) Water pollution
(b) Air pollution
(c) Soil pollution
(d) All of these
Answer: B
Explanation: Air pollution around Taj Mahal area is discolouring its white colour. The cause of this air pollution is the release of harmful chemicals from the factories directly
into the air.

Question. What do plants purify? 
(a) Paper
(b) Air
(c) Wood
(d) All of these
Answer: B
Explanation: Plants purify air by giving out oxygen. 

Question. Which of the following materials can be recycled?
I. Glass II. Paper III. Stone IV. Wood
Choose the correct option.
(a) I and II
(b) II and III
(c) III and IV
(d) I and IV
Answer: A
Explanation: Glass and paper are the materials which can be recycled. Recycling is a process to change waste materials into new products to prevent waste. It reduces the consumption of fresh raw materials. W ood and stone cannot be recy cled easily.

Question. Why are plants kept in garden?
(a) To enhance beauty of garden
(b) They attract money
(c) None of these
(d) Both a and b
Answer: A
Explanation: Plants enhance beauty of gardens. 

Question. Ram left the tap of the wash basin open. What will you do ? 
(a) Close the tap lightly
(b) Explain the importance of water and its conservation.
(c) Shout at Ram & take him to the police station.
(d) Both (a) and (b)
Answer: D
Explanation: Close the tap tightly and explain the importance of water conservation.

Question. __________ of the factories pollute the air. 
(a) People
(b) Smoke from chimneys
(c) Animals
(d) All of these
Answer: B
Explanation: Smoke coming out from the chimneys of factories pollute air. 

Question. Which of the following things should we do to keep our environment clean?
I. Throw garbage only at collection points.
II. Stop using plastic bags.
III. Water should be conserved.
Choose the correct option.
(a) I and II
(b) II and III
(c) I and III
(d) I, II and III
Answer: D
Explanation: I. Throw garbage only at collection points.
II. Stop using plastic bags.
III. Water should be conserved. 

Question. Which of these is a renewable resource?
(a) Goat
(b) Cow
(c) Buffalo
(d) All of these
Answer: D
Explanation: All animals are renewable resources. 

Question. The overuse of plastic articles is not good for us and the environment. We should take steps to minimize their use. 
What can we do to minimize overuse of plastics?
I. We should use paper bags.
II. We should give away cold plastic toys to others who can use them.
III. We should throw the plastic container.
Choose the correct option.
(a) Only I
(b) Only II
(c) I and III
(d) I and II
Answer: D
Explanation: I. We should use paper bags.
II. We should give away old plastic toys to others who can use them. 

Question. The given graph provides information about noise level in different situations. 

Which of the following scenarios can create a noise level as indicated on the graph by the letter X?
(a) A plane taking off
(b) A dog barking
(c) Honking of a car
(d) Metro train moving on tracks
Answer: A
Explanation: Letter ‘X’ on the graph shows maximum noise which can be created by a plane taking off.

Question. Answer in true or false and tell the sequence:
1. We get solar energy from sun
2. We drink air
3. Trees give us wood
4. Soil is a non renewable resource
(a) FFFF
(b) FTFT
(c) TTFF
(d) TFTF
Answer: D

Question. ______ attract rain and prevent floods.
(a) Soil
(b) Forests
(c) Sun
(d) None of these
Answer: B

Question. Moving air is called __________.
(a) wind
(b) wave
(c) food
(d) none of these
Answer: A
Explanation: Moving air is called wind.

Question. Match the columns 

    A B C D
(a) 4 3 1 2
(b) 2 4 1 3
(c) 1 2 3 4
(d) 3 2 4 1
Answer: B

Question. Pick the odd one out 
(a) Plants
(b) Animals
(c) Soil
(d) Petrol
Answer: D
Explanation: All others are renewable resources but petrol is a non renewable resource. 

Question. Wind is utilised as a ______ source of energy.
(a) Non renewable
(b) Renewable
(c) Artificial
(d) All of these
Answer: B

Question. Which of the following waste material present in household garbage are biodegradable? 
Polythene bag, Paper bag, Vegetable peels, Aluminium foil,
Broken glass, Tea leaves
(a) Paper bag, Aluminium foil, Broken glass
(b) Vegetable peels, Tea leaves, Broken glass
(c) Paper bag, Broken glass, Tea leaves
(d) Paper bag, Vegetable peels, Tea leaves
Answer: D
Explanation: Paper bag, vegetable peels, tea leaves.
These three components are biodegradable waste materials.
Biodegradable materials are those materials which are degraded or broken down by the action of bacteria. After degradation, they get mix with soil and increases its fertility.

Directions  : Fill in the blanks in the given passage: Water is an important ___(23)___ resource. ___(24)%___ of the earth’s surface is covered by water. The sources of water are seas, wells and ___(25)___ etc. We get a lot of water in the form of ___(26)___ . Water has ___(27)___ states and these are solid, liquid and ___(28)___ . We use water for many purposes out of which ___(29)___ is one of the most important use of it.

Question.
(a) doors
(b) lakes
(c) hospitals
(d) None of these
Answer: B

Question.
(a) 80
(b) 19
(c) 71
(d) 34
Answer: C

Question.
(a) drinking
(b) wasting
(c) cleaning
(d) None of these
Answer: A
Explanation: We need to drink water to live.

Question.
(a) rain
(b) air
(c) soil
(d) plants
Answer: A

Question.
(a) gels
(b) emulsions
(c) gas
(d) carbon
Answer: C
Explanation: Gas is the third state of water. 

Question.
(a) renewable
(b) non renewable
(c) clean
(d) None of these
Answer: A

Question.
(a) 4
(b) 3
(c) 2
(d) 5
Answer: B

Directions : Read the passage and answer the questions that follows question.
Global warming is an increase in the average temperature of the Earth’s atmosphere. Over the last century, global average temperature has increased by more than 1oF. It is primarily a problem of too much carbon dioxide in the atmosphere. Planting more trees will help to bring down the level of carbon dioxide in the atmosphere.

Question. Global warming is …….. Of the earth.
(a) an increase in average temperature
(b) a decrease in the average temperature
(c) melting of the polar ice caps and glaciers
(d) All of them
Answer: A

Question. Which of the following is/are mainly responsible for global warming?
(a) Burning of fossil fuels
(b) Cutting down and burning of forests
(c) Both (a) and (b)
(d) None of the above
Answer: C
Explanation: I. Burning of fossil fuels.
II. Cutting down and burning of forests. 

Directions : Read the passage below and answer the questions that follow: 
The speed with which we are using the non renewable resources, we can fall short of these in near future. With increase in population the needs are also increasing. There is need of more buildings,vehicles and transportation. For meeting these needs we make new buildings.
In constructing the buildings trees are cut. Though the trees are renewable but they cannot be regrown by the nature at the same speed of their cutting. With increase in number of vehicles, consumption of petrol has also increased which cannot be reproduced. Same is the case with natural gas. We need to be very careful while using these resources as they were formed under the earth millions of years ago. And now also they will take same time to form.

Question. What will happen if we continue using natural resources without thinking?
(a) Nothing is going to happen
(b) We shall fall short of these
(c) The speed of their production will automatically increase
(d) All of these
Answer: B

Question. Petrol is used for:
(a) Driving vehicle
(b) For cooking food
(c) For bathing
(d) For drinking
Answer: A

Question. How much time coal and petroleum take to form?
(a) 10 years
(b) 15 years
(c) Millions of years
(d) 30 days
Answer: C

Question. Why our needs of natural resources have increased?
(a) Because of increase in population
(b) We eat more now
(c) Both (a) & (b)
(d) None of these
Answer: A

Question. How do we get land for constructing buildings?
(a) We destroy other buildings
(b) We cut trees
(c) We make fuel stations
(d) None of these
Answer: B
Explanation: For getting land to construct buildings we cut trees. 

Directions : Look at the picture and tell which resource are they showing: 

Question. 

(a) Colour
(b) Coal
(c) Soil
(d) Water
Answer: D

Question. 

(a) Soil
(b) Water
(c) Petroleum
(d) Trees
Answer: A

Question. 

(a) Plants
(b) Animals
(c) Water
(d) Wind
Answer: A

Question. We get rubber from __________.
(a) air
(b) water
(c) plants
(d) glass
Answer: C
Explanation: We get rubber from plants. 

Question. Biomass fuel is a _______ resource.
(a) Non renewable
(b) Renewable
(c) Artificial
(d) All of these
Answer: B

Question. Air and water are essential to all living things. Choose the activities you should do to save water and make air fresh.
I. Do not burn dry leaves and bushes.
II. Wash floor daily with clean drinking water.
III. Burn fire crackers.
IV. Plant more trees.
Choose the correct option.
(a) I and II
(b) II and IV
(c) I and IV
(d) III and IV
Answer: C
Explanation: I. Do not burn dry leaves and bushes.
IV. Plant more trees.
These two activities we should do to save water and make air fr esh.