Science Olympiad Model Test Papers - 3 | Science Olympiad for Class 5 PDF Download

Ans: (a)
M is older than R, and since N is not as old as M, M must be the eldest. Q is younger than both R and N, confirming that M is the oldest among all.

Ans: (c)

• The car starts at a point and moves 15 cm South.
• Then, it moves 8 cm West.
• After that, it moves 15 cm North, which brings it back to the same North-South line as the starting point.
• Now, the car is 8 cm West of the starting point, so the distance from the starting point is 8 cm.

Ans: (d)

• The code changes each letter in a specific way. For example, H becomes G, O becomes N, and so on.
• Following the same pattern, W in WINDOW is transformed to V, I to H, N to M, D to C, O to N, and W to V.
• Thus, WINDOW is encoded as VHMCNV.
• This shows how each letter is systematically altered to create the code.

Ans: (b)

Ans: (b)

• If yesterday was Wednesday, this means today is Thursday.
• If today is Thursday, this means two days after tomorrow will be Sunday

Ans: (a)

Let us find the actual values of all the options.

• Option a: 10000 ones = 10000 × 1 = 10000 ones
• Option b: 10 hundreds = 10 × 100 = 1000 ones
• Option c: 100 tens = 100 × 10 = 1000 ones
• Option d: 1 thousand = 1 × 1000 = 1000 ones

We can see that the option a is different from the others.

Ans: (c)
Second relationship states that the value of a diamond is greater than 2, therefore possible values are,
.... and so on.

Third relationship states that the value of a diamond is less than 4, therefore among above

given values only possible value is,
First relationship states that sum of the values of a diamond and a heart is 10. Therefore, if

we subtract the value of the diamond from 10, we get the value of the heart.

Ans: (b)

Ans: (b)
Naman is 11th from the top, so there are 10 students above him. Soham is 5th from the bottom, meaning there are 4 students below him. Since Naman is 5 students ahead of Soham, the total number of students is 10 + 4 + 1 + 5 = 21.

Ans: (c)
The pattern alternates between adding 5 to the first number and increasing the letter by 3 positions. After 13J, adding 5 gives 18, and J + 3 is M. Thus, the missing term is 18M.

Ans: (b)

• Vegetables can be preserved using various methods, but boiling is not one of them.
• Drying, freezing, and canning are effective techniques for preserving vegetables.
• Boiling typically cooks the vegetables, which can lead to spoilage rather than preservation.
• Therefore, the correct answer is that vegetables cannot be preserved by boiling.

Ans: (a)
Ears help us to keep our body balance.

Ans: (b)
The human ear can hear from 0 dB (threshold) to 120-130 dB.

Ans: (a)
X is air as it has mass, it occupies space, it can be compressed and takes the shape of the container that holds it.

Ans: (c)
Orange consists of vitamin C which helps his wound to heal.

Ans: (c)
Mercury is the nearest planet to the sun and hence, it is the hottest. It is also the smallest planet.

Ans: (c)
Blinking of eyes does not involve muscle and joint action.    

Ans: (a)

• Lotus, Coconut, and Xanthium are all examples of plants that have seeds dispersed by water or wind.
•  Pea, Geranium, and Balsam have different seed dispersal methods, making option (d) incorrect.
• Urena and Watermelon do not fit well with Litchi, which is not typically dispersed in the same way, indicating option (c) is incorrect.
• Maple, Hiptage, and Dandelion are also wind-dispersed, making option (b) correct.

Ans: (a)

• The relationship involves types of rocks. Conglomerate, Quartzite, and Obsidian are all types of rocks.
• In option (a), Limestone, Gneiss, and Pumice also represent different types of rocks, maintaining the same classification.
• Other options do not follow the same pattern of rock types as clearly as option (a).
• Thus, option (a) is the correct choice as it satisfies the relationship of rock types.

Ans: (d)
Desert ecosystems are located in regions that receive very less rainfall. Due to the extremely high temperature, low water availability and intense sunlight, fauna and flora are scarce and poorly developed.

Ans: (a)
The given animal is considered a mammal because it breathes through its lungs

Ans: (d)
Mosquitoes breed in stagnant water, so we should keep the surroundings dry and spray oil or chemicals on stagnant water that kills the larva and prevent malaria.

Ans: (c)
The concentration of nitrogen in the air is about 78 %. Therefore, option (c) is correct and rest of the options is incorrect.

Ans: (c)

• Linseed is typically grown in the rabi season, which is different from the other options.
• Jowar, Bajra, and Corn are usually cultivated in the kharif season.
• This makes Linseed the odd one out as it does not share the same growing season as the others.
• Understanding the growing seasons of crops is essential for agriculture and farming practices.

Ans: (a)
We can’t make statue of water because liquid can’t have it own shape.

Ans: (c)
Electrostatic force of attraction acts between two opposite charges.

Ans: (c)
Shadows can be formed only in the presence of a source of light. Light always casts shadows of the opaque objects placed in its path.

Ans: (c)

• The question asks to identify the option where the odd one out is incorrectly marked. In option (c), Bread and Roti are both carbohydrates, while Butter is a fat. This makes Butter the odd one out.
• In contrast, the other options group foods that provide similar types of nutrients, such as proteins or fats.
• Thus, option (c) is the correct answer as it contains a food item that does not match the others in terms of nutrient type.

Ans: (a)

• Neem leaves are known for their insect-repelling properties, making them effective in protecting clothes from pests.
• They contain natural compounds that deter insects, which is why they are often used in traditional methods for safeguarding textiles.
• Other options like lotus leaves, papaya leaves, and banyan leaves do not have the same level of effectiveness against insects.
• Using neem leaves is a common practice in many cultures for keeping clothes safe from damage caused by insects.

Ans: (a)

• Both statements are accurate: Lalita is correct that it gets extremely cold on the Moon at night, as there is no atmosphere to retain heat.
• Sahil's statement is also true: Sound cannot travel on the Moon because it requires a medium (like air) to propagate, and the Moon has no atmosphere.
• Thus, both Lalita and Sahil have provided correct information about the conditions on the Moon.

Ans: (b)
In the given figure, X is liquid, Y is solid and Z is gas.

Ans: (c)

• Friction is a force that opposes motion, but it can be beneficial in certain situations.
• In this case, running towards a shelter in heavy rain is advantageous because friction between your shoes and the ground helps you maintain your balance and speed.
• Without sufficient friction, you could easily slip and fall, making it harder to reach safety.
• Thus, friction plays a crucial role in helping us move effectively in slippery conditions.

Ans: (c)

• A change in state of a substance changes the interparticle distances. - This is true because when a substance changes state (like from solid to liquid), the distance between particles changes.
• A change in state of a substance changes its composition. - This is false; the composition remains the same, only the state changes.
• A change in state of a substance changes its shape. - This is true; for example, ice (solid) takes a different shape than water (liquid).
• A change in state of a substance changes intermolecular forces. - This is also true; the forces between particles change when a substance changes state.

Correct answer is (c) 1, 3 and 4 only.
The correct statements are 1, 3, and 4, as they accurately describe how a change in state affects interparticle distances, shape, and intermolecular forces, while the composition remains unchanged.

Ans: (b)
An escalator is an example of inclined plane.

Ans: (b)

• Overcooking food can lead to a loss of essential vitamins and minerals, making it less nutritious.
• Roughage, or fiber, is important for digestion and should not be discarded.
• Fresh food generally retains more nutrients compared to preserved or canned food.
• While children do need fats, they also require a balanced diet with proteins, carbohydrates, and vitamins for overall growth.

Ans: (c)

• Migration refers to the seasonal movement of animals from one region to another, often in search of better food sources or more favorable living conditions.
• During unfavorable conditions, such as harsh weather or food scarcity, many animals travel together in groups.
• This behavior helps them survive by finding suitable environments where resources are more abundant.
• Other options like suspension, hibernation, and displacement do not accurately describe this specific movement of animals.

Ans: (b)

• Arctic tern is known for its long migrations, making it a true migratory bird.
• The other options incorrectly classify animals; for example, locusts are insects, not mammals.
• Understanding animal classifications helps in recognizing their migration patterns.
• Thus, the correct match is the Arctic tern as a migratory bird.

Ans: (a)
Red has longest wavelength, black absorbs all light, violet has shorter wavelength while white reflects all lights.

Ans: (a)
When the moon comes between the earth and the sun, it blocks the sunlight to an extent. This is solar eclipse as the sun is eclipsed or hidden partially from the view.

Ans: (b)

• Chalk is indeed a form of Limestone, so that pairing is correct.
• The Red Fort is primarily made of Sandstone, which is also accurate.
• Silver is classified as a Metallic mineral, making that pairing correct.
• Petroleum is considered a Non-metallic mineral, which is also true.
• However, Granite is not a Metamorphic rock; it is an Igneous rock, making option (b) the incorrect match.

Ans: (d)

• Soil pollution refers to the contamination of soil with harmful substances.
• Option (a) is true because excessive use of pesticides can lead to soil contamination.
• Option (b) is also true as plastic waste can accumulate and pollute the land.
• Option (c) is correct since improper disposal of hospital waste can harm the soil.
• However, option (d) is incorrect because soil pollution actually increases with the use of harmful substances, not when fertilizers are reduced.

Ans: (b)
Cerebrum is responsible for learning, speech and memory.

Ans: (c)

Ans: (a)
Shark is decomposed by bacteria.

Ans: (d)
As seen in the diagram, there are small water drops on the leaf. These water drops can be seen as a result of the conversion of water vapour in the air back into the water form. Thus this depicts the process of condensation.

Ans: (d)
Sheet U is made of an opaque material.

Ans: (b)

Ans: (a)

• Statement (i) is incorrect because Odissi is a classical dance form, not a folk dance.
• Statement (ii) is correct as the Ajanta Caves indeed feature paintings by Buddhist monks.
• Statement (iii) is correct; the Gateway of India is approximately 26 meters high.
• Statement (iv) is correct; the Sun Temple of Konark has various intricate carvings.
• Statement (v) is correct; Qutub Minar is surrounded by historical structures.

Ans: (a)
A disease that can spread by biotic agent is malaria.

Ans: (b)
2- is vegetables, 3- Fruits, 4- Fish, 5- Dairy