Science Olympiad Previous Year Paper - 1 | Science Olympiad for Class 1 PDF Download

Ans: (c)

• To find the number of groups of 5 seashells, you need to divide the total number of seashells by 5.
• If you have a total of 15 seashells, dividing 15 by 5 gives you 3 groups.
• This means you can form 3 complete groups of 5 seashells each.
• Thus, the correct answer is (c) 3.

Ans: (b)

So, triangle is not present in the given figure

Ans: (d)
The pattern followed is :

Ans: (b)

• Chalk is a type of sedimentary rock made primarily of calcium carbonate, and it is formed from the accumulation of tiny marine organisms.
• In this analogy, we need to find a rock that is similar to chalk in composition or formation.
• Limestone is also a sedimentary rock that can be formed from similar processes as chalk, making it the correct answer.
• The other options, while they are types of rock, do not share the same direct relationship with chalk as limestone does.

Ans: (a)
Number of fighter planes flying in the sky = 4

Ans: (a)

• The correct answer is (a) Rock, as it is a natural object, while the others are man-made materials.
• Plastic and metal are both synthetic products created by humans.
• A tree is a natural living organism, but it is not a manufactured item.
• Thus, the odd one out is the rock, which is purely a natural element.

Ans: (c)
Money plant grows as it is a living thing which represents the growth in plants.

Ans: (a)
Because bus cannot move itself. Instead it needs petrol to move.

Ans: (a)

• The question asks for the incorrect match between animals and their typical habitats.
• A hen is usually found in a coop or henhouse, not a sty, which is for pigs.
• A horse lives in a stable, a bear resides in a cave, and a rabbit makes its home in a burrow, all of which are correct matches.
• Thus, the pairing of hen and sty is the only incorrect option.

Ans: (d)

• The question asks to identify the odd one out based on the number of seeds in each fruit.
• Guava, Pomegranate, and Kiwi typically have many seeds, while Mango usually has just one large seed.
• This makes Mango different from the others in terms of seed quantity.
• Thus, the correct answer is Mango as it has a significantly lower seed count compared to the others.

Ans: (b)

• Full Moon occurs when the Moon is on the opposite side of the Earth from the Sun, allowing us to see its fully illuminated face.
• During this phase, the entire disk of the Moon is visible, making it appear bright and round.
• The other options represent different phases of the Moon, such as the New Moon (not visible), Half Moon (only half illuminated), and Crescent Moon (less than half illuminated).
• Thus, the correct answer is (b) Full Moon, as it is the only option that accurately describes this lunar phase.

Ans: (d)

• Air (P) and sunlight (Q) are crucial for processes like photosynthesis in plants.
• Food (R) provides the necessary nutrients for energy and growth.
• Water (S) is vital for hydration and various biological functions.
• All these elements together are essential for the survival of living things, hence the correct answer is (d).

Ans: (b)

• Elephants are recognized as the largest animals that live on land, making option (b) correct.
• While the giraffe is tall, it is not the largest overall; that title goes to the blue whale.
• The term "ship of the desert" is actually used for camels, not rhinoceroses.
• In water, the largest animal is the blue whale, not a dolphin.

Ans: (d)
A plant is a living thing that’s why it can reproduce, grow and breathe.

Ans: (d)

• Tape grass is a type of aquatic plant that thrives in water, making it unique among the options.
• Unlike rose, money plant, and lemon, which grow on land, tape grass is specifically adapted to live submerged.
• This plant plays a crucial role in aquatic ecosystems, providing habitat and oxygen for fish and other organisms.
• Understanding the environment where a plant grows helps in identifying its characteristics and ecological importance.

Ans: (a)
Living things can move, reproduce, grow but non living things can not.

Ans: (d)

• The question asks us to unscramble the letter groups to find a daily activity.
• Each option represents a different activity: GINHATB can be rearranged to "BATHING", GNMIOBC to "COMBING", and GSHNIURB to "BRUSHING".
• Since all these activities are things we should do every day, the correct answer is All of these.
• Thus, the answer is (d) because it includes all the activities mentioned.

Ans: (d)

• Water is essential for extinguishing fires, making option (d) the correct choice.
• While paragliding, playing the flute, and flying a kite are activities that do not involve water for their primary function.
• In emergencies, water is often the most effective method to put out flames and prevent the spread of fire.
• Thus, the best answer is (d) as it directly relates to the use of water in fire safety.

Ans: (d)

• The question is asking for a sense organ that fits the pattern provided.
• The correct letters to fill in the blanks are N, O, E, which spell NOSE.
• The other options do not form the name of a sense organ when filled in the blanks.

Ans: (c)

• Silverfish are known for their elongated, fish-like appearance and do not possess wings.
• In contrast, cockroaches, mosquitoes, and grasshoppers all have wings at some stage of their life cycle.
• This makes silverfish unique among the options, as they are completely wingless.
• Understanding the characteristics of these insects helps in identifying them correctly.

Ans: (b)
Pearl Oyster is a living thing and cannot be added in non living thing.

Ans: (b)

• Understanding the sign: The road sign in question is specifically designed to inform drivers about traffic regulations.
• No right turn: This means that vehicles are prohibited from making a right turn at this intersection.
• Importance of compliance: Following this sign is crucial for maintaining traffic flow and ensuring safety on the road.
• Other options: The other options represent different traffic rules that are not indicated by this particular sign.

Ans: (d)

• During the summer, people often seek ways to cool down and enjoy the warm weather.
• Options like drinking cold juice, swimming, and eating ice cream are all popular activities.
• Since all these activities are enjoyable in summer, the correct answer is "All of these."
• This option encompasses all the fun ways to beat the heat during the summer months.

Ans: (d)
The above diagram shows the process of germination in plants. And plants do not move and growth.

Ans: (a)

• Eating junk food every day is harmful and is not a good habit because it can lead to health issues.
• On the other hand, not talking while eating, not wasting food, and washing hands before and after eating are all positive habits that promote good health and hygiene.
• It's important to develop healthy eating habits to maintain overall well-being.

Ans: (a)

• Drying process: Wet clothes dry due to the evaporation of water, which happens faster when the air is less humid.
• Fewer water vapours: When there are fewer water vapours in the air, it allows more moisture from the clothes to evaporate quickly.
• Cloudy conditions: Cloudy weather can slow down drying because it often means higher humidity.
• Wind effect: Wind can help dry clothes, but the key factor is the humidity level in the air.

Ans: (b)

• Cheetahs do not create their own homes; instead, they find shelter in natural formations or use the cover of grass.
• In contrast, animals like beavers build dams, birds create nests, and spiders spin webs.
• This question highlights the different behaviors of animals regarding their habitats.
• Understanding these behaviors helps us learn about animal adaptations and survival strategies.

Ans: (b)

• Rakesh Sharma made history as the first Indian to travel into space in 1984.
• He flew aboard the Soviet spacecraft Soyuz T-11, marking a significant achievement for India.
• While walking on the Moon and going to Mars are notable milestones, they were not accomplished by him.
• His journey into space inspired many and highlighted India's capabilities in space exploration.

Ans: (d)

• All of these activities can lead to air pollution in different ways. For example, while planting trees is generally good for the environment, other activities like using certain types of vehicles or industrial processes can release harmful pollutants into the air.
• It's important to understand that air pollution can come from various sources, including factories, cars, and even some household products.
• Thus, the correct answer is that all these activities can contribute to making the air dirty.

Ans: (d)

• None of the children provided a correct statement regarding living and non-living things.
• Living things are characterized by growth, reproduction, and response to stimuli, while non-living things do not exhibit these traits.
• Since all three children were incorrect, the answer is "None of these."
• This highlights the importance of understanding the basic differences between living and non-living entities.

Ans: (c)

• To determine the answer, you need to carefully examine the word grid.
• Look for hidden names of cereals and spices within the grid.
• In this case, you will find a total of 2 cereals and 2 spices.
• This leads to the conclusion that the correct answer is option (c).

Ans: (d)
Water is a non living thing that mouse needs to live.

Ans: (d)
Only frog can move from one place to other but plant cannot move.

Ans: (c)
Umbrella is a nonliving man made thing used in rainy season.