Science Olympiad Model Test Paper - 1 | Science Olympiad Class 6 PDF Download

Ans: (b)
The pattern followed is: + 3, + 3, + 3.

So, LIGHT = L + 3 = O, I + 3 = L, G + 3 = J, H + 3 = K, T + 3 = W

hence, OLJKW

So, SOUND = S + 3 = V, O + 3 = R, U + 3 = X, N + 3 = Q, D + 3 = G

Hence, VRXQG

Ans: (b)

An actor performs in a play. A musician performs at a concert. Choices 1, 3 and 4 are incorrect because none is people who performs. 

Ans: (d)

The pattern is as follows:

13 × 3 + 1 = 40

40 × 3 + 1 = 121

121 × 3 + 1 = 364

Ans: (b)

• Arjun's daughter's father is Arjun himself.
• So, the father of Arjun's daughter’s father is Arjun's father.
• Thus, the only brother of Arjun's father is Arjun's uncle.
• Therefore, the person pointed out by Arjun is his uncle.

Ans: (a)

• Vinita starts by walking 20 m North.
• She then turns right (which is towards the East) and walks 30 m.
• After that, she turns right again (now facing South) and walks 35 m.
• Next, she turns left (now facing East) and walks 15 m.
• Finally, she turns left again (now facing North) and walks 15 m.
• To find her final position, we calculate: she moved 20 m North, then 30 m East, then 35 m South, which brings her back down, and finally 15 m East. This results in a total of 45 m East from her starting point.

Ans: (a)

Baby of a dog is called puppy. Baby of a horse is called foal.

Ans: (b)

• To solve this, we first note that Q and R are at the ends, meaning they are either at the leftmost or rightmost positions.
• Since S is immediately to the left of Q, Q must be on the left end, making S the second person.
• This arrangement places T and U in the center, leaving R at the right end.
• Thus, the order is: Q, S, T, U, R. Therefore, the person to the immediate right of R is P.

Ans: (c)
The triangle rotates 90^o clockwise in each step and also the number of small circle-like shapes is increased by 1 in each step.

Ans: (b)

• We start with the expression: 25 M 5 L 10 P 2 J 15.
• Substituting the symbols, we get: 25 ÷ 5 - 10 * 2 + 15.
• Calculating step by step: First, 25 ÷ 5 equals 5.
• Next, we have 5 - 10 * 2 + 15, which simplifies to 5 - 20 + 15.
• Finally, 5 - 20 equals -15, and -15 + 15 equals 0.

Ans: (d)

Ans: (a)

• A magnet cannot have only one pole. Every magnet has two poles: a north pole and a south pole. This is a fundamental property of magnets.
• Maximum iron filings do stick to the poles of a magnet when they are brought close, demonstrating the magnetic field's strength.
• Magnets do lose their properties when subjected to heat or hammering, which can disrupt their magnetic alignment.
• Magnetite is indeed a natural magnet and contains iron, making it a common example of a magnetic material.

Ans: (d)
High tide, extreme rainfall, and storms over oceans can bring a lot of water with them by pressure causing floods.  

Ans: (c)

• Sunrise occurs in the East. Therefore, if Kunal is facing the pole and the shadow is to his right, he must be facing South.
• In this scenario, the pole is in front of him, and the shadow falls to the right, indicating his orientation.
• Thus, Kunal is indeed facing South.

Ans: (a)

• Trisha's distance to the playground is 500 m, while Ansh's distance is 0.6 km (which is 600 m).
• Since 500 m is less than 600 m, Trisha has a shorter distance to cover.
• Both are taking 80 cm footsteps and moving at the same speed, so the one with the shorter distance will arrive first.
• Thus, Trisha will reach the playground first.

Ans: (d)

By eating rice alone, we cannot fulfil nutritional requirement of our body. 

Ans: (c)

A compass can be used to find East-West direction at any place. 

Ans: (d)
Higher speed is indicated by the following statements:

(i) Given distance has been covered in a shorter time.

(iii) Larger distance is covered in a given time.

Ans: (a)

Tyndall effect, also known as Tyndall scattering, is light scattering by particles in a colloid or else particles in a very fine suspension. It is named after the 19th-century physicist John Tyndall.  

Ans: (c)

• Statement 1 is correct because the filament indeed emits light when electricity flows through it.
• Statement 2 is incorrect as both the electric cell and the electric bulb actually have two terminals.
• Thus, the correct answer is that statement 1 is true while statement 2 is false.
• This means option (c) is the right choice.

Ans: (d)

A cylinder object can cast shadows in two ways. When the top circular view faces the shining object, a circular shape shadow is formed. When its curved side faces the shining object, it casts a rectangular shadow. 

Ans: (b)

• Silver is actually the best conductor of electricity, not the poorest.
• Metals are known for their shiny appearance because they reflect light effectively.
• Both plastic and glass are non-magnetic, meaning they do not attract magnets.
• Materials that are denser than water will sink rather than float.

Ans: (c)

• Living beings use air for respiration.
• Plants use air (carbon dioxide) to prepare their food.
• Blowing air (wind) is used for power generation by windmills.
• Air helps in burning of fuels and substances.
• Air helps in the scattering of seeds and pollens of plants.
• Air helps in the movements of sailing yachts, gliders, parachutes and aeroplanes.

Ans: (c)

• Pumice stone is known for its rough texture, making it a suitable match for P.
• Jute bag is non-lustrous, which aligns perfectly with Q.
• Wooden bowl is capable of floating on water, fitting the description for R.

Ans: (a)
Accelerated motion is a type of motion in which the velocity of an object changes by an equal amount in every equal time period. 

Ans: (a)

• Statement 1 is correct because the metal rim must be smaller to fit onto the wooden wheel.
• Statement 2 is also correct as heating the rim allows it to expand and fit over the wheel, and it contracts when cooled, securing it tightly.
• Thus, both statements are true, and the second statement explains the first.
• This process is a practical application of thermal expansion and contraction.

Ans: (d)

• Salt from the sea water and milk powder from the solution can be separated by evaporation.
• The water evaporates, leaving behind the non-volatile solute.
• Water in an earthen pot remains cool as it evaporates from the surface of the pot because evaporation has a cooling effect.

Ans: (d)

Hot water vapors get condensed on cold mirrors and leaves, forming dew.

Ans: (b)

• Homogeneous mixtures are those that have a uniform composition throughout. Examples include alloys and glucose in water.
• On the other hand, smoke and oil in water are considered heterogeneous mixtures because their components can be easily distinguished.
• In a homogeneous mixture, you cannot see the different parts, while in a heterogeneous mixture, the different substances remain separate.
• Thus, the correct answer is (b) as it represents a homogeneous mixture.

Ans: (d)

Sublimation is a reversible change. When a substance sublimes on heating, it changes directly from the solid to gaseous state without passing through the liquid state. Desublimation, or deposition, is the reverse of this process in which a gas is directly converted into solid state on cooling.

Therefore, sublimation is a reversible change that can be undone or reversed.

Ans: (b)

• Gorilla, Monkey, and Toucan are all species that thrive in rainforest ecosystems.
• These animals share a habitat characterized by dense vegetation and a warm climate.
• In contrast, the other options include animals that live in very different environments, such as polar regions or savannas.
• Thus, option (b) is the correct choice as they all belong to the same habitat type.

Ans: (a)

Lightning rod is the device used to secure tall buildings from the effect of lightning. A metal rod taller than the height of the building is installed in the walls of the building during its construction which protects the building from the effect of lightning.

Ans: (c)

• Cotton, jute, and wool are all examples of natural fibers.
• In the same way, silk cotton, flax, and silk are also classified as natural fibers.
• This shows that the relationship is based on the type of material, specifically natural fibers.
• Thus, option (c) maintains the same relationship as the original set.

Ans: (a)
Herbivores animals are those that eat plants. They include sheep, rabbits, hyenas, cows, zebras and deer. They have sharp front teeth, used for biting, and large back teeth, used for grinding.  

Ans: (b)
Cockroaches take in air through tiny openings in their bodies which are known as spiracles.  

Ans: (d)

'Almonds' are one of the best sources of vitamin E.

Ans: (b)

• Explanation: The statement about the anther is incorrect because the anther actually contains pollen grains, which are involved in the male part of reproduction in plants. Ovules are found in the ovary, not the anther. The other statements about glucose storage, leaf modifications, and stem functions are correct.

Ans: (a)

• Cotton is known for being a light and breathable fabric, making it a popular choice for summer clothing.
• It has excellent absorbency, which helps in keeping the body dry by soaking up sweat.
• Additionally, cotton allows air to circulate, providing comfort in hot weather.
• Thus, both statements are true, and statement 2 correctly explains why cotton is preferred in summer.

Ans: (d)

• Kuchipudi is a classical dance form that originates from Andhra Pradesh.
• Bharatanatyam is associated with Tamil Nadu, while Odissi comes from Odisha.
• Kathakali is a traditional dance-drama from Kerala.
• Thus, the correct match is Kuchipudi with Andhra Pradesh.

Ans: (c)

• Pumice is classified as an igneous rock, which forms from volcanic activity.
• In this analogy, we need to find a rock that is a type of sedimentary rock.
• Limestone is a well-known example of a sedimentary rock, formed from the accumulation of marine organisms.
• On the other hand, quartzite and marble are types of metamorphic rocks, and basalt is also an igneous rock.

Ans: (d)

There are many animals that bear a thick coat of hair on their bodies. Such animals generally live in cold climates. Thick coat of hair over the body of such an animal traps lot of air and keeps them warm, as air is a bad conductor of heat, and that thick layer is used to obtain wool. 

Ans: (a)
Burrs are the small, fluffy fibres, which are picked out from the hair of wool-yielding animals. Burrs produce many tiny bristles that easily attach to clothing when they come into contact with it.

Ans: (b)

• Playing the piano is a learned skill that requires practice and coordination, unlike reflex actions.
• Reflex actions are automatic responses to stimuli, such as blinking of the eye or sudden withdrawal of hand when pricked.
• These actions happen quickly and do not involve conscious thought.
• In contrast, playing an instrument involves deliberate control and practice.

High tide, extreme rainfall, and storms over oceans can bring a lot of water with them by pressure causing floods.

Ans: (b)

• The statement about Kwashiorkor is incorrect because it is primarily caused by a deficiency of protein, not carbohydrates and fats. The other statements are true. Fats do act as shock absorbers, roughage does not provide energy or build tissue, and starch does turn bluish-black with iodine. Thus, the only incorrect statement is (ii).

Ans: (a)
When a person shoots a bullet, he gets a pull back on his shoulder because every action has equal and opposite reaction.

Ans: (d)

Ans: (a)
W is a man-made fibre and could be nylon or spandex.

X is asbestos, which is a natural mineral fibre.

Y is cotton plant and grows well in black soil and warm climate.

Jute grows well in soil rich in alluvial deposits and requires standing water. It is cultivated during the rainy season. Hence, Z is jute.

Therefore, option (1) is correct.

Ans: (a)

The process shown in the diagram is germination. Germination is the process of seeds developing into new plants. The presence of light, water and warmth is essential for the process to take place. Seeds remain dormant if these conditions are not met. As the process of germination starts, all the metabolic activities including respiration speed up. Root is the first part of the seed that comes out in the soil and anchors the seedling in the soil. Germination is essential for the continuity and propagation of flowering plants.

Ans: (b)

Option B is the paramecium. A paramecium is a small one-celled (unicellular) living organism that can move, digest food, and reproduce. The locomotory organ in a paramecium is cilia.

Ans: (b)

In this case, we know that A shows an up and down motion, B shows a train in straight line motion, C shows a girl on the swing which is a back and forth motion, D shows zig zag motion of a snake.