CBSE Class 3 Science NSO Olympiad MCQs with Answers Set H

Question. Flasks X, Y and Z in the figure show three states of matter.

Which of the following options is INCORRECT regarding this?
A Material in flask X has no definite shape and volume.
B Material in flask Y has definite volume but not definite shape.
C Material in flask Z has definite shape and volume.
D None of these
Answer : D

Question. X is an essential part of our food. It helps in growth and building and repairing our body. X is found abundantly in pulses and cheese. X is_________.
A Vitamin
B Iron
C Protein
D Calcium
Answer : C

Question. We eat roots of many plants. Select the option that correctly identifies foods [(i)-(iv)] sourced from roots.

A (i), (ii) and (iv)
B (i), (ii) and (iii)
C (iii) and (iv)
D (i), (ii), (iii) and (iv)
Answer : B

Question. Read the given statements about a human body system.
1. It consists of brain, spinal cord and nerves.
2. It controls all our actions like seeing, hearing, walking and learning.
The body system referred in the given statements is
A Circulatory system
B Respiratory system
C Nervous system
D Digestive system.
Answer : C

Question. Which of the following animals shows the eating habit similar to that of the animal shown in the figure?

Answer : C

Question. If you have to send a ‘wedding card’ to your relative located in a distant city, you will use__________.
A Speed post
B Post card
C Telegram
D All of these
Answer : A

Question. Which of the following statements is correct?
A Digestion of carbohydrates starts in stomach.
B Heart expands in size when air enters the body.
C Circulatory system transports blood from lungs to various parts of the body.
D Kidneys, lungs and skin form the excretory system.
Answer : D

Question. The two astronauts who travelled in the spacecraft with Neil Armstrong were _______.
A Edwin Aldrin and Kalpana Chawla
B Yuri Gagarin and Michael Collins
C Michael Collins and Edwin Aldrin
D None of these
Answer : C

Question. Which of the following actions/activities are done in the direction of gravitational force?

A 1 and 2
B 3 and 4
C 2, 3 and 4
D 1, 2, 3 and 4
Answer : A

Question. Which of the following vehicles is used by hospitals to carry sick/injured people?

Answer : A

Question. Identify the constellation shown in the figure.

A Leo
B Ursa Major
C Orion
D The Great Bear
Answer : C

Question. Select the correct statement.
A Force cannot stop a moving object.
B Outdoor shadows are longer in Noon.
C A shadow is formed when something blocks the path of light.
D All of these
Answer : C

Question. Which of the following most likely absorbs highest amount of water?

Answer : B

Question. Study the given food chain.
X → Y → Z
Select the option that identifies herbivore.
A X
B Y
C Z
D Both X and Y
Answer : B

Question. Read the following statements about the Earth.
1. It has many natural satellites that move around it.
2. It has an atmosphere that has gases such as carbon dioxide and oxygen.
3. It has an atmosphere that helps to keep right temperature for living things to live in.
4. Its position from the Sun is just right for living things to receive the required amount of light and heat energy.
Which of these statements are correct?
A 1 and 3 only
B 1, 2 and 4 only
C 2, 3 and 4 only
D 1, 2, 3 and 4
Answer : C

Question. The given box contains some materials.
1. Wood 2. Glass
3. Brass 4. Silver
Which of these materials are bad conductors of heat?
A 1 and 2 only
B 2 and 3 only
C 3 and 4 only
D 2, 3 and 4 only
Answer : A

Question. The processes in the life cycle of a flowering plant are given here in random order.
a → Seeds develop        b → Flowers bloom
c → Seeds germinate     d → Flowers get pollinated
e → New plant grows     f → Seeds disperse
Select the option that arranges these processes in correct order.
A e → c → b → d → a → f
B c → e → b → d → a → f
C e → c → d → b → a → f
D c → e → d → b → f → a
Answer : B

Question. Which of the following is a correct match of the type of house with the area it is most commonly found in? 
A Igloo - Kerala
B House on stilts - Madhya Pradesh
C Houseboat - Assam
D House with sloping roof - Kashmir
Answer : D

Question. Match column-I with column-II and select the correct option from the given codes.

A a-(iii), b-(i), c-(iv), d-(ii)
B a-(i), b-(iii), c-(iv), d-(ii)
C a-(iii), b-(i), c-(ii), d-(iv)
D a-(i), b-(iii), c-(ii), d-(iv)
Answer : A

Question. During the process of freezing water in _________ state changes to ________ state.
A Liquid, Solid
B Liquid, Gas
C Solid, Liquid
D Solid, Gas
Answer : A

Question. Read the given statements regarding animal X and select the correct option.
1. It lives in water.
2. It breathes through lungs.
3. It gives birth to young ones.
A X could be octopus.
B X could be whale.
C X could be frog.
D X could be turtle
.Answer : B

Question. Read the given statements.
1. In roasting, food is cooked in an oven or over fire.
2. Grilling is done in a griller/tandoor.
3. Baking involves cooking the food item in liquid fats.
4. Reheating the food maintains its nutrient contents.
Select the option that correctly identifies true (T) and false (F) ones.

Answer : B

Question. Select the tool that is used for measuring temperature

Answer : B

Question. What will be the weight of object X on Moon if it weighs 36 kg on Earth?
A 36 kg
B 216 kg
C 6 kg
D 10 kg
Answer : C

Question. Refer the given figure showing changes in a flag’s shadow during the day. 

Shadows P, Q and R represent different times of the day. At what time, would Preeti most likely to have (i) Breakfast and (ii) Evening snacks, respectively?
A (i) - R, (ii) - Q
B (i) - P, (ii) - Q
C (i) - R, (ii) - P
D (i) - P, (ii) - R
Answer : D

Question. Refer to the given relationship.
Tap root : Mustard : : Fibrous root : X
A Balsam
B Bean
C Onion
D Hibiscus
Answer : C

Question. Read the given statement regarding soil X and select the correct statement regarding it. Soil X is sticky, it can hold a lot of water and there is very little space for air between the particles.
A Most plants grow well in it.
B It is used to make toys, flower pots, idols, etc.
C It is a mixture of sand and clay.
D It is mostly found on the seashore and in the desert.
Answer : B

Question. Rahul is visiting his friend who is admitted in a hospital. On his way to the hospital, he gets confused about the route. He then studies the map. Which of these symbols (d, e, f or g) on map will help him in locating the hospital?

A d
B e
C f
D g
Answer : A

Question. Study the given table regarding objects X and Y and select the correct option.

A X could be wood whereas Y could be paper.
B X could be metal whereas Y could be plastic.
C X could be glass whereas Y could be paper.
D X could be rubber whereas Y could be metal.
Answer : C

Question. Aakash took some water in a vessel and heated it. After some time, he observed steam coming out of the vessel. He brought a steel plate near the steam as shown in the figure.
He observed water droplets on the surface of the steel plate after some time. Due to which of the following processes water droplets appeared on the surface of the plate?

A Evaporation
B Condensation
C Sublimation
D Filtration
Answer : B

Achievers' Section

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 few dogs barking
C Some people talking loudly
D Metro train moving on tracks
Answer : A

Question. Refer to the given figure showing changes in the state of water. Which of the following is correct regarding it?

A Process Z is responsible for melting of ice-cream.
B Process W is responsible for formation of vapours.
C Process X involves in preserving food items at low temperature.
D Process Y is responsible for formation of hailstones.
Answer : C

Question. Study the given flow chart carefully and select the correct option regarding it.

A P could be nylon, R could be rubber.
B S could be rubber, Q could be jute.
C Q could be milk, P could be saffron.
D R could be cotton, S could be rubber.
Answer : D

Question. Study the given Venn diagram.
Identify P-S and select the INCORRECT statement.

A Q could possess hair whereas R could possess feathers.
B P could possess beaks whereas S could possess spiracles.
C Both R and S may possess six legs.
D Both P and R could possess feathers.
Answer : C

Question. Which of the following is correct regarding different types of beaks P, Q, R and S?

A P may have strong legs with three toes in front and one at the back whereas S may have two toes that point upwards and two toes that point downwards.
B Q could have webbed feet whereas S could have strong and sharp claws called talon.
C Q may have long legs with spread out toes whereas R may have long legs that help them to wade through muddy water without getting wet.
D P and S could be omnivore whereas Q and R could be herbivore.
Answer : B