Science Olympiad Model Test Papers - 3 | Science Olympiad for Class 2 PDF Download

Ans: (c)
Milk is a liquid matter, others are solid matter.

Ans: (a)
Number of figures inside the box which are made up of only straight lines = 4.

Ans: (d)
Number of candles in Pattern 1 = 2 
Number of candles in Pattern 2 = 4 
Number of candles in Pattern 3 = 6

So, number of candles in pattern 6 = 12

Ans: (c)
Except figure in option C, all other figures have four sides.

Ans: (c)
Fifth book from the right end is book S and third to the left of book S is book Z.

Ans: (a)

• Sun is a natural object found in space, providing light and warmth.
• Suitcase is an item created by humans for carrying belongings.
• In contrast, Soil and Dog are both natural, while Mountain and Sheep are also natural.
• However, Coin and Newspaper are both man-made, but the question specifically asks for the first option.

Ans: (a)
The Sun appears to rise from the east in the morning.

Ans: (d)
The Moon does not has its own light whereas others have their own light.

Ans: (c)
Sun is the ball of fire. Moon is the ball of rock and the Earth has life.

Ans: (a)

• The nose is the organ responsible for the sense of smell.
• It allows us to detect and distinguish between different odours, whether they are pleasant or unpleasant.
• Other options like eyes, skin, and tongue do not play a role in identifying smells.
• Thus, the correct answer is the nose, as it is essential for our olfactory perception.

Ans: (c)

• The analogy compares two pairs of items. In the first pair, "Hair" is related to something that is similar in function or nature.
• In this case, "Tongue" is the correct answer because just as hair is a part of the body, the tongue is also a significant part of the body.
• Other options like "Hand," "Ear," and "Teeth" do not fit the analogy as closely as "Tongue" does.
• Thus, the completed analogy is Hair : Tongue.

Ans: (d)

• Sea water is primarily known for its salinity, which means it contains a high concentration of salt.
• Unlike sweet water found in rivers and lakes, sea water has a distinct salty taste.
• The presence of minerals and salts like sodium chloride contributes to this characteristic.
• Thus, the correct answer is that sea water is salty.

Ans: (d)

• Neil Armstrong is the correct answer because he was the first person to walk on the moon, but he is not of Indian origin.
• In contrast, Sunita Williams, Rakesh Sharma, and Kalpana Chawla are all astronauts who have Indian heritage.
• Sunita Williams is known for her long-duration space flights, Rakesh Sharma was the first Indian in space, and Kalpana Chawla was the first woman of Indian origin in space.
• Thus, the question asks for someone who does not belong to Indian origin, making Neil Armstrong the right choice.

Ans: (b)

• To find the object, strike out every alternate letter in "KMHELDPIOCTIDNEEF". This results in "KID", which refers to a child.
• The correct statement is that it should be taken under the supervision of an adult. This is important for safety.
• Options (a), (c), and (d) do not relate to the context of needing adult supervision.
• Thus, the best choice is (b), emphasizing the need for adult oversight.

Ans: (b)

• The root of a plant is primarily responsible for absorbing water and nutrients from the soil.
• While roots do not produce fruit, they play a crucial role in the plant's survival by providing essential resources.
• Roots do not give rise to seeds or prepare food; those functions are performed by other parts of the plant, like leaves.
• Thus, the correct statement is that the root takes water from the soil.

Ans: (a)

• Leather is primarily made from the skin of animals, and one of the most common sources is the camel.
• Other options like silkworm, honeybee, and duck do not produce leather; they are associated with silk and other products.
• Understanding the source of leather helps in recognizing its animal origin and the importance of ethical sourcing.
• Thus, the correct answer is camel, as it is a well-known source of leather.

Ans: (c)

• The ribcage is designed to protect the chest area, specifically the heart and lungs, not the legs.
• The skeleton provides the overall structure and shape to our body.
• The heart is responsible for pumping blood throughout the body, ensuring that all organs receive oxygen and nutrients.
• The lungs are essential for breathing, allowing us to take in oxygen and expel carbon dioxide.

Ans: (a)
The magnet will pick up the nail because nail is made up of iron and magnet attracts iron.

Ans: (c)
Both statements are true.

Ans: (d)

• Shalini's paternal grandfather has four children: one daughter and three sons.
• The daughter is Shalini's aunt, and the three sons are her uncles.
• This means Shalini has 2 uncles (the two sons who are not her father) and 1 aunt (the daughter).
• Thus, the correct answer is 2 Uncles, 1 Aunt.

Ans: (d)

• Teachers’ Day is celebrated in honor of a significant figure in education.
• This day marks the birthday of Dr. S. Radhakrishnan, who was a renowned teacher and the second President of India.
• He believed that teachers play a crucial role in shaping the future of students.
• Thus, his birthday is recognized as a day to appreciate and honor teachers everywhere.

Ans: (c)

• The correct answer is BNGADAE, which unscrambles to BANDAGE.
• A bandage is a crucial item in a first aid box used to cover and protect wounds.
• Other options like SIDLE, CCERKSAR, and LDEDAR do not represent items typically found in a first aid kit.
• Recognizing items in a first aid kit is important for emergency preparedness.

Ans: (b)
The sequence in the decreasing order of the size is: The Moon < The Earth < The Sun.

Ans: (d)
An island is a piece of land surrounded by water on all sides. A mountain is a very high land. A plain a large flat land. A valley is a piece of land between two hills or mountains. A lake is a large area of water surrounded by land.

Ans: (c)
This model is most likely used to show day and night. The area which gets lit up, shows day and the other side, shows night.

Ans: (c)

• Earth is the only planet known to have life.
• While other planets like Saturn and Uranus are gas giants, they do not have the conditions necessary for life.
• Venus has a harsh environment with extreme temperatures and pressure, making it unsuitable for life as we know it.
• In contrast, Earth has the right atmosphere, water, and temperature to support a variety of living organisms.

Ans: (b)

• The length of a shadow changes throughout the day due to the position of the sun.
• From 8:00 am to 12:00 noon, the sun rises higher in the sky, causing shadows to shorten.

Ans: (b)

• The correct answer is Cotton, which is a fiber that comes from the seed fibers of the cotton plant, a fruit.
• Wool comes from sheep, Jute is a plant fiber, and Hemp is derived from the stalk of the hemp plant.
• Cotton is widely used in textiles due to its softness and breathability.
• Understanding the source of fibers helps in recognizing their uses in various products.

Ans: (a)

• Bear is known to growl, which matches with option 3.
• Cat makes a sound called meow, corresponding to option 1.
• Goat produces a sound known as bleat, matching with option 4.
• Monkey is known to chatter, which aligns with option 2.

Ans: (a)

• Radhika's statement is correct because a shadow is indeed created when light is blocked by an object.
• Manav's statement is incorrect; shadows are actually shortest at noon when the sun is directly overhead.
• Thus, Radhika is right while Manav is wrong.
• The correct option is (a) as it accurately reflects the truth of their statements.

Ans: (c)
P could be polyester that is a synthetic fibre Q could be wool as it is a natural fibre obtained from sheep (animal)  R could be cotton that is obtained from fruit of cotton plant  and S could be linen that obtained from stem of flax plant.

Ans: (d)
Strawberry shake on freezing, changes from a  liquid matter  to a solid matter, it becomes an ice-cream.

Ans: (b)
On heating water changes into water vapour. Water vapour is a gas.

Ans: (a)
The length of a shadow is shortest or nil at 12 p.m. and it is maximum in morning and in evening. If we assume that the length of shadow was 0 m at 12 p.m., then the difference between 8 a.m. and 12 p.m. is 4 hours and the difference between 12p.m. and 5 p.m. is also 4 hours hence, the length of the pole at 5 p.m. will be same as it was at 8 a.m.