Model Papers -1


30 Questions MCQ Test Science Olympiad Class 4 | Model Papers -1


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Attempt Model Papers -1 | 30 questions in 60 minutes | Mock test for Class 4 preparation | Free important questions MCQ to study Science Olympiad Class 4 for Class 4 Exam | Download free PDF with solutions
QUESTION: 1

We all know that in the process of photosynthesis,  plants take carbon dioxide and give oxygen during the day and vice versain night. Now, choose the correct answer to find out at what time oxygen levels will be minimum in the air?

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QUESTION: 2

Needle-like leaves of the cactus plant help it to grow in the desert because:

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QUESTION: 3

This is not true about weeds:

Solution:

They rob soil moisture and nutrients from the competing crop and decrease harvest efficiencies. Weeds also compete with the crop for sunlight. Because they are plants competing to survive in a limited space, weeds are actively removing nutrients from the soil to grow taller, stronger and healthier each day.

QUESTION: 4

The bird shown in the picture below has:

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QUESTION: 5

Complete the chart below:

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QUESTION: 6

Fill this pyramid by choosing the correct sequence from producer to carnivore/ omnivore:

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QUESTION: 7

Sunil went to his uncle’s village in his summer vacation. He noticed that whenever he applied soap on his hands, it took him a long time to remove it properly. Why?

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QUESTION: 8

There are two flasks – flask A and flask B.
In flask A, there is 500 ml of water. Flask A is connected to flask B. Flask A is heated until the water is completely evaporated. The amount of water collected in flask B is about:

Solution:

Since, Flask A is connected to flask B, the water is converted into vapors by the process of evaporation, these vapors then reach Flask B where they are again converted to water. so, almost the same amount of water is transferred.  

QUESTION: 9

In the picture below, A and B denote:

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QUESTION: 10

The bottommost layer of the atmosphere is called the:

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QUESTION: 11

A metal ball is heated to 100°C and put into a cup of water at 65°C. What is the likely temperature of the water after a while?

Solution:

Option A and Option C, are incorrect because, after insertion of the metal ball in water, the temperature will decrease only and will be less than 100°C. Also, Option B is incorrect as the temperature can not become so much low.
Option D is correct.

QUESTION: 12

Select the correct statement from the following:

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QUESTION: 13

Which of the following vehicles is specially designed for the disabled?

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QUESTION: 14

Birds communicate by:

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QUESTION: 15

It is a naturally occurring substance found in animal products and some plant products. Our bones and teeth need protein, which is found in meat, fish, eggs, beans, and nuts.

Q. The above statement is describing:

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QUESTION: 16

Look at the pictures below. Which system are these pictures indicating?

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QUESTION: 17

The cell membrane is:

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QUESTION: 18

Which of the following is a chemical change?

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QUESTION: 19

A student scraped his knee while climbing a tree. Which body system responds by transporting white blood cells to the wound?

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QUESTION: 20

Ranchit’s mother is in a very bad mood today because he is not well and his blood report shows vitamin and mineral deficiency in his body. She has prepared vegetable cheela and milk for his breakfast but he is not eating anything and is asking for some junk food.

Q. Look at the food items for breakfast and guess the mineral deficiency:

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QUESTION: 21

This is not a preservative:

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QUESTION: 22

This rock is used in pencil making:

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QUESTION: 23

What is that tool called that measures an object’s mass?

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QUESTION: 24

The surface of Mercury looks most similar to the surface of:

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QUESTION: 25

What is the right order of the earth’s layers?

Solution:

The inner core, the outer core, mantle and crust are the four layers of earth The Inner Core. It is the centre and the hottest layer of the Earth. The inner core is solid and made up of iron and nickel with temperature up to 5,500 o C. Due to its immense heat energy, the inner core is more like the engine room of the Earth. The Outer Core. The outer core of the Earth is similar to a very hot ball of metals, whose temperature is around 4000 o F to 9000 0 F.

QUESTION: 26

The electricity to the motor is supplied by a dry cell. Then the coloured disc, which is attached to the rod of the motor, rotates.

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QUESTION: 27

Look at the image of the pulley. If bucket A has a mass of 5 kg, which of the following statements is true about the minimum effort required to lift the bucket if friction is ignored?

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QUESTION: 28

What is the main type of energy used when a pulley moves an object?

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QUESTION: 29

A ___________is made of two or more atoms joined together.

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QUESTION: 30

Read the following experiment carefully.
Materials:

  • Soda pop bottle
  • Small funnel
  • Soda straw
  • Modeling clay
  • Cupful of water

Method: Seal the funnel tightly into the neck of the bottle with modeling clay. Pour the cup of water into the funnel quickly. The water stays in the funnel because the air in the bottle cannot get out.
Pass the straw through the funnel into the bottle. Suck out a mouthful of air. Some of the water goes down into the bottle, taking the place of the air sucked out.

Q. What does this experiment show?

Solution:
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