Science Olympiad Previous Year Questions - 2 | Science Olympiad for Class 5 PDF Download
Note: The questions provided in this document are similar to the questions that were asked in the actual Olympiad exam. So, we recommend you study these for your Olympiad preparation.
Logical Reasoning
Q1: Five girls are sitting on a bench facing North. Megha is to the left of Beena and to the right of Priya. Latika is to the right of Beena; Garima is between Beena and Latika. Who is second from the left?
(a) Garima
(b) Latika
(c) Megha
(d) Beena
View AnswerSolution: The arrangement is: Priya, Megha, Beena, Garima, Latika.
Q2: Which of the following figures will complete the pattern in Fig. (X)?
(a) 
(b) 
(c) 
(d) 
View AnswerAns: (c)
Q3: Count the number of triangles in the given figure.
(a) 10
(b) 13
(c) 12
(d) None of these
View AnswerSolution: The triangles formed are...
A, B, C, D, E, F, BC, CD, DE, ABC, DEF and ABCDEF ∴ Number of triangle formed = 12
Q4: Pointing towards Kanika, a boy said, "She is the mother of my father's only son." How is Kanika related to that boy?
(a) Sister
(b) Grandmother
(c) Aunt
(d) Mother
View AnswerAns: (d)
- The phrase "my father's only son" refers to the boy himself.
- This means that Kanika is the mother of the boy.
- Therefore, Kanika is directly related to the boy as his mother.
- This establishes a clear familial connection between Kanika and the boy.
Q5: There is a certain relationship between figures P and Q. Establish a similar relationship between figures R and S by selecting a suitable figure from the options which will replace (?) in figure S.
(a) 
(b) 
(c) 
(d) 
View AnswerAns: (c)
The left element and the right element interchange their positions, the shaded part of the element becomes unshaded and vice-versa. Also the element which is at downward position goes upward.
Q6: In a specific coding system, if 'UNIQUE' is represented as 'NUQIEU', how would 'GENTLE' be encoded in that same system?
(a) TMHPTD
(b) VOJRVF
(c) EGTNEL
(d) NEGTLE
View AnswerAns: (c)
- The code involves swapping the first and second pairs of letters and then reversing their positions.
- For 'GENTLE', the first pair is 'GE' and the second pair is 'NT'.
- After swapping, we get 'NTGE', and then we add the last letter 'LE' at the end.
- So, the final code becomes 'EGTNEL', which matches option (c) EGTNEL.
Q7: Select the correct water image of Fig (X).
(a) 
(b) 
(c) 
(d) 
View AnswerAns: (a)
Q8: Arijit correctly remembers that he visited Punjab before thirteenth of August but after ninth of August. His sister Trishika correctly remembers that Arijit visited Punjab after eleventh of August but before fourteenth of August. On which day of August did Arijit visit Punjab?
(a) Eleventh
(b) Twelfth
(c) Tenth
(d) Thirteenth
View AnswerQ9: If all the vowels are taken out from the given sequence, which element is second to the left of the fifth element from the right end?
(a) R
(b) U
(c) Q
(d) ©
View AnswerAns: (a)
- The sequence without vowels is: 7 4 @ 3 P Q 2 © 1 R Z # $ * 9 S.
- The fifth element from the right is #.
- Thus, the correct answer is R.
Q10: How many different possible combinations of one colour pencil and one rubber cap can be formed from 5 different colour pencils and 6 different rubber caps?
(a) 22
(b) 25
(c) 36
(d) 30
View AnswerAns: (d)
Science
Q11: Which of the following is the main organ of the circulatory system ?
(a) 
(b) 
(c) 
(d) 
View AnswerAns: (a)
Human heart is the main organ of the circulatory system.
Q12: Identify the relationship in the given analogy and select the option that satisfies the same relationship. Fish: Swimming
(a) Kangaroo: Hopping
(b) Rabbit: Slithering
(c) Duck: Crawling
(d) Rohu: Running
View AnswerAns: (a)
- Fish are known for their ability to move through water by swimming.
- In the same way, a kangaroo is recognized for its unique method of movement, which is hopping.
- The other options do not represent the same type of movement relationship.
- Thus, the correct analogy is between fish and swimming, and kangaroo and hopping.
Q13: Look at the given diagram carefully. The organs protected by the given structure of bones are ______ .
(i) Stomach
(ii) Lungs
(iii) Liver
(iv) Heart
(a) Only (i) and (ii)
(b) Only (i) and (iii)
(c) Only (ii) and (iii)
(d) Only (ii) and (iv)
View AnswerAns: (d)
The given figure is of ribcage. Ribcage protects the lungs and heart.
Q14: Swati resides in a hostel and has six roommates. Among them, four have fallen ill. Which of the following can transmit the infection to Swati?
(a) Roshni who has anaemia
(b) Sakshi who has scurvy
(c) Neha who develops a dust allergy
(d) Ritika who has a cold
View AnswerAns: (d)
- Common cold is a type of communicable disease, meaning it can be easily spread from one person to another.
- The other conditions mentioned, such as anaemia, scurvy, and dust allergies, are considered non-communicable diseases.
- Therefore, only Ritika, who has a cold, poses a risk of passing the infection to Swati.
- It's important to be cautious around individuals with communicable diseases to prevent spreading infections.
Q15: In which of these layers of atmosphere, changes in the weather can be seen?
(a) Thermosphere
(b) Stratosphere
(c) Troposphere
(d) Mesosphere
View AnswerAns: (c)
Troposphere is the first layer of the atmosphere, which is made up of gases that we breathe. Troposphere is located up to about 10 km above the Earth surface. The troposphere of the Earth is heated by the reflection of heat from the Earth. It is the layer, where changes in the weather can be seen.
Q16: Unscramble the given letters to identify a plant that possesses fibrous roots.
(a) A B N E
(b) H W T E A
(c) A R T O C R
(d) U I T N R P
View AnswerAns: (b)
- Wheat is the correct answer as it is a plant known for its fibrous roots.
- When we unscramble the letters, we find the words: BEAN, WHEAT, CARROT, and TURNIP.
- Among these, only WHEAT is recognized for having a fibrous root system.
- This type of root system is beneficial for the plant as it helps in stability and nutrient absorption.
Q17: Sonia, while transferring the oil from the container, found a change in ...................... .
(a) Volume
(b) Mass
(c) Shape
(d) Temperature
View AnswerAns: (c)
Q18: Which among the given plants disperses its seeds by the same mechanism as balsam?
(a) Pea
(b) Cocklebur
(c) Hiptage
(d) Madar
View AnswerAns: (a)
- Both balsam and pea plants use a method called explosive seed dispersal. This means that when the seeds are ripe, the pods burst open and forcefully eject the seeds away from the parent plant.
- This mechanism helps the seeds to spread over a wider area, increasing their chances of germination and growth.
- In contrast, the other options like cocklebur, hiptage, and madar do not use this explosive method for seed dispersal.
- Thus, the correct answer is the pea plant, which shares this unique seed dispersal method with balsam.
Q19: Layer X of the atmosphere is situated above the stratosphere and ranges from 50-85 km above the Earth's surface. Identify layer X and select the correct statement regarding it.
(a) All weather changes take place in layer X of the atmosphere.
(b) Space shuttle orbits the Earth in layer X of the atmosphere.
(c) A gas present in layer X protects us from ultraviolet radiation from the Sun.
(d) Layer X prevents small rocks and meteors from reaching the Earth's surface.
View AnswerAns: (d)
- Layer X is known as the mesosphere, which is located above the stratosphere.
- This layer plays a crucial role in protecting the Earth by preventing small rocks and meteors from reaching the surface.
- While other layers have different functions, the mesosphere specifically deals with burning up meteors before they can cause harm.
- Thus, option (d) is the correct statement about layer X.
Q20: Select the option that accurately represents the sequence of processes in a water treatment facility.
(a) Z, Y, X
(b) Z, X, Y
(c) Y, X, Z
(d) X, Y, Z
View AnswerAns: (a)
- The proper sequence in a water treatment plant involves sedimentation (Z) first, followed by filtration (Y), and finally chlorination (X).
- Sedimentation allows larger particles to settle out of the water.
- Next, filtration removes smaller particles and impurities.
- Lastly, chlorination disinfects the water to kill any remaining pathogens.
Q21: Statement 1 : Energy is the ability to do work.
Statement 2 : Energy is the exerted force on a body.
Which one of the following is correct about the above statements?
(a) Both statements are true.
(b) Both statements are false.
(c) Statement 1 is true and 2 is false.
(d) Statement 1 is false and 2 is true.
View AnswerAns: (c)
Energy is the ability to do work.
Q22: Which of the following actions can contribute to decreasing both air and water pollution?
(i) Use of electrostatic precipitators
(ii) Closing industries that cause pollution
(iii) Less use of insecticides and pesticides
(iv) Building dams
(a) (i) and (iv) only
(b) (ii) and (iii) only
(c) (ii) and (iv) only
(d) (i), (ii), (iii), and (iv)
View AnswerAns: (b)
- Closing down factories that emit harmful pollutants is essential for improving air quality.
- Minimizing the use of insecticides and pesticides is crucial as these chemicals can contaminate water sources.
- Both actions effectively target the sources of pollution, leading to a cleaner environment.
- Thus, options (ii) and (iii) are the correct choices for reducing both air and water pollution.
Q23: Names of a few items are listed: Metal vase, Plastic bottle, Jute bag, Cotton shirt, Fruit peel, Steel plate, Newspaper, Wooden chair. How many of these are biodegradable?
(a) 3
(b) 4
(c) 5
(d) 6
View AnswerAns: (c)
- Jute bag, cotton shirt, fruit peel, newspaper, and wooden chair are all biodegradable materials.
- This means they can break down naturally over time.
- In total, there are 5 biodegradable items from the list provided.
- Items like the metal vase, plastic bottle, and steel plate do not decompose easily, hence they are not included.
Q24: Given below are a few statements related to a planet. It is composed of gases. It features prominent rings made of ice and rocks surrounding it. It is the second largest planet in the Solar System. Identify the planet and select the correct statement regarding it.
(a) It has 27 moons.
(b) It is also known as the Blue Planet.
(c) It takes approximately 30 years to revolve around the Sun.
(d) All of these
View AnswerAns: (c)
- The planet in question is Saturn, known for its gaseous composition and distinctive rings.
- Among the options, the correct statement is that it takes about 30 years to complete one orbit around the Sun.
- While Saturn does have moons, the number is not 27, and it is not referred to as the Blue Planet, which is actually Earth.
- Thus, option (c) is the only accurate statement regarding Saturn's characteristics.
Q25: Choose the correct statement about bat?
A bat finds its food :
(a) By high pitched sounds produced by the bat bounce off the food and then come back to the bat.
(b) With the help of eyes.
(c) By smell of the food.
(d) All of these
View AnswerAns: (a)
Bat can’t see in the dark hence, it locates food by producing high pitched sound that bounce off the food and then comes back to the bat
Q26: The time taken by the moon to go around the Earth once is ______________.
(a) One month
(b) One year
(c) 27.3 days
(d) 45 days
View AnswerAns: (c)
The time taken by moon to go around the earth once is 27.3 days.
Q27: Kavya has a container whose volume is 40 cm³. Which of the following substances can be held in this enclosed container?
(i) 50 cm3 of water
(ii) 80 cm3 of oxygen
(iii) 55 cm3 of sand
(iv) 60 cm3 of nitrogen
(a) (ii) only
(b) (i) and (iii) only
(c) (ii) and (iv) only
(d) (i), (ii), (iii), and (iv)
View AnswerAns: (c)
- Oxygen and Nitrogen are both gases that can be compressed, allowing them to fit into the 40 cm³ container.
- Other substances may not fit or may not be in a gaseous state.
- Thus, the correct answer is that only options (ii) and (iv) can be stored in the container.
- This means that the gases can occupy the space effectively, while solids or liquids may not fit as well.
Q28: Study the food chains given below carefully.
Grass → Goat → Man
Leaves → Giraffe → Lion
Papaya → Fruit fly → Lizard
Which of the following statements holds true for given food chains?
1. Food chains start with plants.
2. All animals eat plants and other animals.
3. Animals that eat plants become food for the other animals.
4. Animals eat other animals which are smaller than them.
(a) 1 and 2
(b) 2 and 4
(c) 1 and 3
(d) 3 and 4
View AnswerAns: (c)
Food chain start with plants and animals that eat plants become food for the other animals.
Q29: Select the statement that is incorrect.
(a) Taj Mahal was designed by architect Ustad Ahmad Lahori.
(b) The construction of Qutb Minar was initiated by Iltutmish and finished by Qutb-ud-din Aibak.
(c) Gateway of India is a 26 m high structure with four turrets.
(d) Around the base of Sun temple are the images of animals, foliage, warriors on horses, etc.
View AnswerAns: (b)
- Construction of Qutb Minar was actually started by Qutb-ud-din Aibak and later completed by Firoz Shah Tughlaq, not Iltutmish.
- The other statements about the Taj Mahal, Gateway of India, and the Sun temple are correct.
- This highlights the importance of verifying historical facts, as many details can be misattributed.
- Understanding the correct sequence of events in history helps in appreciating our cultural heritage.
Q30: The part of coconut seed that enables it to float in water for dispersal to distant places is: 
(a) White edible part
(b) Outermost fiber cover
(c) Coconut milk
(d) Hard shell
View AnswerAns; (b)
Seeds of coconut are spongy or have a fibrous coating which helps them to float on water.
Q31: Sanjana lived along with her six roommates in a house in Delhi. One day, out of them four fell ill. Which of these cases will make Sanjana fall ill?
(a) Kiara who has beri beri.
(b) Priya who has cancer.
(c) Neha who developed a dust allergy.
(d) Swati who has a cold.
View AnswerAns: (d)
Cold is a communicable disease, thus, it may spread from Swati to Sanjana and other roommates also. Beriberi, cancer and allergy are noncommunicable diseases.
Q32: Select the odd one out based on habitat.
(a) Cedar
(b) Sundari tree
(c) Larch
(d) Pine
View AnswerAns: (b)
- The Sundari tree is unique because it thrives in swamps or marshes.
- In contrast, Cedar, Larch, and Pine typically grow on hills or in upland areas.
- This difference in habitat makes the Sundari tree the odd one out.
Q33: Unscramble the provided letters to find the name of a tree: C A A I C A. Now, determine the accurate statement about it:
(a) Leaves of this tree are needle-shaped with a waxy coating to prevent damage due to snow.
(b) Leaves of this tree are long, thin, and devoid of stomata.
(c) Leaves of this tree are small to prevent water loss due to transpiration.
(d) Leaves of this tree are broad and flat and contain stomata only on the upper surface.
View AnswerAns: (c)
- The unscrambled letters reveal the name "ACACIA."
- The Acacia tree is adapted to dry environments, which is why its leaves are small.
- Small leaves help to reduce water loss through a process called transpiration.
- This adaptation is crucial for survival in areas where water is scarce.
Q34: Megha accidentally touched a hot pan and spontaneously withdrew her hand from the metal. Why did she react spontaneously?
(a) Due to the attraction of the hot pan
(b) Due to repulsion of the pan
(c) Due to reflex action
(d) Due to the brightness and heaviness of the pan
View AnswerAns: (c)
The automatic response of the body to an event is called a reflex action. Reflex actions are due to messages sent by the spinal cord. These actions are very fast. For example, if you touch a hot object accidentally you withdraw your hand almost immediately.
Q35: The diagram shows the path of a ball when kicked at point P and return to the ground again at S. The point at which the ball has the maximum potential energy is ________. 
(a) P
(b) Q
(c) R
(d) S
View AnswerAns: (b)
The point at which the ball has the maximum potential energy is Q.
Q36: Select the incorrect match:
(a) Vitamin C - Scurvy
(b) Vitamin D - Rickets
(c) Vitamin A - Osteoporosis
(d) Vitamin B - Beriberi
View AnswerAns: (c)
- Vitamin A deficiency leads to night blindness, which is a vision problem.
- Osteoporosis is actually related to a lack of calcium and not Vitamin A.
- Thus, the match of Vitamin A with osteoporosis is incorrect.
- The other options correctly link vitamins with their respective deficiency diseases.
Q37: Chaitanya suffers from stomachache and indigestion whenever he eats any wheat product whereas his brother Satvik complains of bad vision in dim light. Which of the following holds true for them?
(a) Chaitanya is suffering from Vitamin C deficiency and should take more of citrus fruits in his diet.
(b) Satvik is suffering from iron deficiency and should take more of spinach, apple, etc. in his diet.
(c) Chaitanya is allergic to wheat products. So, he should stop taking them to avoid illness caused due to their consumption.
(d) Satvik is suffering from Vitamin B1 deficiency. So he should take more of carrots and papaya.
View AnswerAns: (c)
Chaitanya is allergic to wheat products, so he should stop taking them to avoid illness caused due to their consumption.
Q38: Kishan and his two friends Hari and Mohan are trying to get a good harvest. Which among the three would get the best harvest?
1. Kishan loosened the soil, added manure, and sowed the seeds. He sprayed pesticides to protect the crops.
2. Hari ploughed his fields, added manure, sowed seeds, and irrigated them. He sprayed pesticides too.
3. Mohan sowed seeds, added water, and sprayed pesticides whenever needed.
(a) Kishan
(b) Mohan
(c) Hari
(d) None of these
View AnswerAns: (c)
Hari would get the best harvest as he has ploughed his fields, added manure, sowed seeds, and irrigated them. He sprayed pesticides too.
Q39: Which of the following safety guidelines should be adhered to while on the road?
(a) Always walk on the footpath.
(b) Always obey the traffic signals.
(c) Always wear your seatbelt when in a moving vehicle.
(d) All of these
View AnswerAns: (d)
- All of these rules are essential for ensuring safety on the road.
- Walking on the footpath helps to keep pedestrians safe from vehicles.
- Obeying traffic signals is crucial for maintaining order and preventing accidents.
- Wearing a seatbelt is a simple yet effective way to protect yourself in case of a crash.
Q40: P is a substance that possesses a specific volume but lacks a fixed shape. What could P be?
(a) Nitrogen
(b) Eraser
(c) Milk
(d) Water vapor
View AnswerAns: (c)
- P is identified as a liquid (such as milk) since it maintains a definite volume but adapts to the shape of its container.
Q41: Which of the following was the first artificial Indian satellite?
(a) Rohini
(b) Bhaskara
(c) Apple
(d) Aryabhata
View AnswerAns: (d)
- Aryabhata was launched in 1975, marking a significant milestone in India's space program.
- This satellite was named after the ancient Indian mathematician and astronomer Aryabhata.
- It was primarily used for scientific experiments and paved the way for future Indian satellites.
- The successful launch of Aryabhata showcased India's growing capabilities in space technology.
Q42: A cold drink bottle mouth was capped with a balloon. The size of the balloon can be increased by putting it _______ .
(a) In front of fan
(b) In normal water
(c) In cold water
(d) In hot water
View AnswerAns: (d)
When the air inside the plastic bottle is warmed, it expands and needs more space, therefore it stretches out the balloon.
Q43: Select the accurate statement.
(a) Limestone contains the mineral lignite.
(b) Gneiss is formed from quartzite.
(c) Bedrock contains humus.
(d) Petroleum is also called black gold.
View AnswerAns: (d)
- Petroleum is often termed "black gold" because of its significant economic value.
- This nickname highlights its importance in the energy sector and its role in fueling economies.
- Unlike the other options, which contain inaccuracies, this statement correctly reflects the value of petroleum.
- Understanding this term helps in recognizing the critical role of petroleum in modern society.
Q44: Select the correct option that includes only communicable diseases:
(a) Cholera, Typhoid
(b) Chikungunya, Scurvy
(c) Rickets, Diarrhea
(d) Typhoid, Beriberi
View AnswerAns: (a)
- Cholera and typhoid are both classified as communicable diseases, meaning they can spread from one person to another.
- On the other hand, beriberi, rickets, and scurvy are considered non-communicable diseases, primarily caused by nutritional deficiencies.
- This distinction is important for understanding how diseases spread and how they can be prevented.
- Thus, the correct answer is option (a) as it contains only communicable diseases.
Q45: Which of the following changes can be observed on heating?
(a) Liquid water changes to ice.
(b) Water vapour changes to liquid.
(c) Ice changes to liquid water.
(d) Water vapour changes to ice.
View AnswerAns: (c)
Solid changes to liquid form by heating. This process is called melting. For e.g., Ice (solid) can be changed to water (liquid) by heating.
Achievers Section
Q46: Adhyay created groups of animals based on their habitats but made errors in each grouping. Identify the mistakes and choose the correct option.
(a) Swallow of group I must be interchanged with guppy of group III.
(b) Penguin of group IV must be interchanged with squirrel of group II.
(c) Toad of group II must be replaced with Koala.
(d) Frog of group III must be replaced with a lizard.
View AnswerAns: (c)
- Toad of group II should be replaced with Koala because Koalas are arboreal animals, similar to squirrels and monkeys, which live in trees.
- This means that the original grouping was incorrect as it did not consider the habitat of the animals properly.
- Understanding animal habitats is crucial for correct classification.
- Thus, the correct option reflects the proper habitat association.
Q47: Study the various steps of the water cycle as marked below:
A for rains
B for evaporation of water
C for water in rivers and lakes
D for cloud formation
What will be the correct arrangement of letters A, B, C, and D that represents the water cycle?
(a) B, D, A, C
(b) B, A, C, D
(c) B, C, D, A
(d) B, D, C, A
View AnswerAns: (d)
The correct sequence is:
Evaporation of water (B) → Cloud Formation (D) → Rains (A) → Water in River lakes (C)
Q48: Read the given sentences and select the option that correctly fills any two of the given blanks:
(i) Point under the ground where the earthquake begins is called _______.
(ii) _______ is a dormant volcano.
(iii) Hollow top of a volcano is called _______.
(iv) _______ occurs due to lack of rain.
(a) (i) Epicenter, (ii) Mt. Popa
(b) (iii) Vent, (iv) Drought
(c) (i) Focus, (iv) Earthquake
(d) (ii) Mauna Kea, (iii) Crater
View AnswerAns: (d)
- Mauna Kea is recognized as a dormant volcano, meaning it hasn't erupted in a long time but could potentially erupt again.
- The hollow top of a volcano is referred to as a crater, which forms after an eruption.
- The other options do not correctly match the definitions provided in the sentences.
- Thus, the correct choice is (d) as it accurately fills the blanks with the right terms.
Q49: Four pupils were asked to identify forces X and Y from the given description and also give one more application of each one of these forces. Force X is responsible for falling of a fruit that gets detached from tree on the ground whereas force Y is responsible down a ball rolling on the ground. Which of the pupils stated the correct applications of these forces?
View AnswerAns: (b)
Force X is the gravitational force which helps us to stay in ground while force Y is force of friction, which helps us to write.
Q50: Read the statement and choose the correct option True (T) and False (F).
(A) Gases have weight, that is why it is easier to carry an empty LPG cylinder than a full one.
(B) Liquid has a definite volume but no definite shape.
(C) Tin is the only metal that is liquid at room temperature.
(a) FTF
(b) TFF
(c) FFF
(d) TTF
View AnswerAns: (d)
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