CBSE Class 3 Science NSO Olympiad MCQs with Answers Set 03

Question. Select the correct option which on unscrambling gives the name of an animal that gnaws its food.
A. WAERTOMHR
B. QUSOTIOM
C. QUSRIERL
D. PLEHEATN
Answer. C

Question. Meetu was asked to label the parts of a plant. She labelled them as shown in the figure. Select the correct statement regarding the labelled parts.

A. Stem was labelled correctly while root was incorrectly labelled.
B. Both bud and root were correctly labelled.
C. Leaf was labelled incorrectly.
D. Both fruit and flower were labelled incorrectly.
Answer. D

Question. The given figures show four different fruits. Which of the following plants will NOT reproduce by seeds?

Answer. B

Question. How many food chains are there in this food web?

A. Two
B. Four
C. Five
D. Six
Answer. B

Question. Select the INCORRECT statement.
A. Blue whale is bigger than the largest dinosaur that lived on the Earth.
B. A baby whale is called a cub.
C. A mother whale feeds milk to its baby under the water.
D. None of these
Answer. B

Question. Select the INCORRECT match for the function performed by beaks of the given birds.

Answer. B

Question. I am known as the helicopter of the bird world. I am the only bird that can also fly backward. Who am I?
A. Tailor bird
B. Weaver bird
C. Humming bird
D. Swallow
Answer. C

Question. Five students made the following statements about birds.
Divya : Bird's body is made up of hollow bones.
Arpita : All birds can fly.
Diksha : Most birds lay eggs, while some give birth to young ones.
Prince : Birds use teeth to eat food.
Ashish : Some birds eat flesh while some eat grains, seeds and fruits.
Which among the following made INCORRECT statement about the birds?
A. Divya, Prince and Ashish
B. Arpita, Diksha and Prince
C. Divya, Diksha and Arpita
D. Arpita, Diksha and Ashish
Answer. B

Question. The food item shown in the picture belongs to the group 'X'. Which of the following statements is true for this group?

A. It is body building food.
B. It keeps us healthy and free from diseases.
C. It can get stored in form of energy in the body.
D. It does not provide us energy but helps in digestion of food.
Answer. C

Question. How many food items are hidden in the given word grid?

A. Six
B. Seven
C. Eight
D. Nine
Answer. A

Question. Study the given flow chart carefully. Where would nylon and wool could be placed?

 Nylon Wool
A. P    Q
B. Q    P
C. R    S
D. P    R
Answer. D

Question. Which of the following is a temporary house?

Answer. D

Question. Which of the following is correct about the place shown in the given picture?

A. It is a parking zone.
B. Honking is not allowed here.
C. Post office is near to the given place.
D. None of these.
Answer. B

Question. Which of the following vehicles is used to carry victims of accident?

Answer. B

Question. The given figure shows the human digestive system. In which labelled part does the complete digestion of food takes place?

A. P
B. Q
C. R
D. S
Answer. C

Question. Select the INCORRECT option.
A. Digestive system — Large intestine
B. Skeletal system — Skull
C. Circulatory system — Heart
D. Nervous system — Nostril
Answer. D

Question. Select the option which on unscrambling gives the name of an organ used to taste different food items.
A. GOTUNE
B. EOSN
C. ADNH
D. MTSOCAH
Answer. A

Question. What happens when Moon, Earth and Sun come in a straight line ?
A. Eclipse of the Moon
B. Eclipse of the Sun
C. Full Moon phase
D. Meteor showers
Answer. A

Question. Select the INCORRECT statement from the following.
A. Humus makes the soil infertile.
B. Water exists in three forms.
C. Moving air is also called wind.
D. Clayey soil is used to make pots
Answer. A

Question. Identify the constellation shown in the given figure.

A. Leo
B. The Big Dipper
C. Ursa Major
D. Scorpius
Answer. B

Question. Read the given conversation between two friends carefully and complete the sentence that follows.
Tina : The temperature is very low in this season.
Pinki : People wear gloves and sweaters.
They are talking about __________ season.
A. Winter
B. Summer
C. Spring
D. Autumn
Answer. A

Question. Select the tool that measures in the unit of centimeter.

Question. 'X' is a strong and waterproof material. Which of these can be made from 'X'?
A. Raincoat
B. Tissue paper
C. Sponge
D. Cotton T-shirt
Answer. C

Question. Rishee placed a cup containing ice cubes on the table. After 20 minutes, he noticed that the ice cubes were melting in the cup and there were droplets of water on the outer side of the cup. These droplets of water are a result of __________.
A. Evaporation
B. Freezing
C. Melting
D. Condensation
Answer. D

Question. Rohan sets up an experiment to study the properties of light as shown. He cannot see any light from the torch. Which of the following properties of light can be inferred from this?

A. Light reflects back.
B. Light from the torch is too far from his eye.
C. Light travels in a straight line.
D. Light from the torch is not bright enough.
Answer. C

Question. Astronauts use walkie-talkies for talking in the space. Which among the following is the correct explanation for this?
A. Sound cannot travel in vacuum.
B. Sound cannot travel in the air.
C. Astronauts wear sound proof helmets.
D. None of these
Answer. A

Question. Which of the following can happen to water after it falls on the Earth?
1. It evaporates.
2. It will not be available to plants.
3. It seeps into the ground.
4. It runs off into lakes and rivers.
A. 1, 2 and 4 only
B. 1, 2, 3 and 4
C. 3 and 4 only
D. 1, 3 and 4 only
Answer. D

Question. Mohit tried to push a stool but failed to move it.

Which of the following could be a reason for it?
A. The force of push is greater than the friction.
B. The force of friction is greater than the force of push.
C. Mohit is not tall enough to push the stool.
D. None of these
Answer. B

Question. The given figure shows two gases used by the plants and animals during night. Which of these can be X, Y and Z?

        X                       Y                       Z
A. Oxygen              Oxygen            Carbon dioxide
B. Carbon dioxide   Oxygen              Oxygen
C. Carbon dioxide   Carbon dioxide   Oxygen
D. Oxygen            Carbon dioxide     Oxygen
Answer. C

Question. Which of the following weather conditions would make you put on both raincoat and gumboots?

Answer. D

Question. Rohit placed a teacup in between a lighted torch and the wall.

Answer. D

Question. Study the given Venn diagram carefully and select the correct option.

A. X-Cardboard, Y-Rubber band
B. W-Paper towel, X-Cardboard
C. W-Cotton cloth, Y-Swimsuit
D. X-Rubber band, Z-Sponge
Answer. D

Question. Read the given statement and select the correct option.
X moves around Y and Z moves around X.
A. X could be Sun whereas Z could be Moon.
B. X could be Earth whereas Y could be Sun.
C. Y could be Mercury whereas Z could be Mars.
D. X could be Venus whereas Z could be Sun.
Answer. A

Question. Study the given Venn diagram.

Select the correct statement regarding X, Y and Z.
A. X could be turnip whereas Z could be onion.
B. Y could be rice whereas Z could be mustard.
C. X could be onion whereas Y could be wheat.
D. X could be turnip whereas Y could be Hibiscus
Answer. D

Question. Select the option that correctly identifies a, b, c and d in the given flow chart.

     a                         b                  c                     d
A. Small intestine   Bone          Blood vessels   Skin
B. Mouth               Muscle        Tongue              Lung
C. Heart                Kidney         Windpipe          Ear
D. Food pipe          Muscle       Nerve                Nose
Answer. A