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Model Papers -1

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

Model Papers -1 for Class 4 2022 is part of Science Olympiad Class 4 preparation. The Model Papers -1 questions and answers have been prepared according to the Class 4 exam syllabus.The Model Papers -1 MCQs are made for Class 4 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Model Papers -1 below.
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Model Papers -1 - 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?

Model Papers -1 - Question 2

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

Model Papers -1 - Question 3

This is not true about weeds:

Detailed Solution for Model Papers -1 - Question 3

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.

Model Papers -1 - Question 4

The bird shown in the picture below has:

Model Papers -1 - Question 5

Complete the chart below:

Model Papers -1 - Question 6

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

Model Papers -1 - 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?

Model Papers -1 - 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:

Detailed Solution for Model Papers -1 - Question 8

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.  

Model Papers -1 - Question 9

In the picture below, A and B denote:

Model Papers -1 - Question 10

The bottommost layer of the atmosphere is called the:

Model Papers -1 - 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?

Detailed Solution for Model Papers -1 - Question 11

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.

Model Papers -1 - Question 12

Select the correct statement from the following:

Model Papers -1 - Question 13

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

Model Papers -1 - Question 14

Birds communicate by:

Model Papers -1 - 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:

Model Papers -1 - Question 16

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

Model Papers -1 - Question 17

The cell membrane is:

Model Papers -1 - Question 18

Which of the following is a chemical change?

Model Papers -1 - Question 19

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

Model Papers -1 - 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:

Model Papers -1 - Question 21

This is not a preservative:

Model Papers -1 - Question 22

This rock is used in pencil making:

Model Papers -1 - Question 23

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

Model Papers -1 - Question 24

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

Model Papers -1 - Question 25

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

Detailed Solution for Model Papers -1 - Question 25

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.

Model Papers -1 - 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.

Model Papers -1 - 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?

Model Papers -1 - Question 28

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

Model Papers -1 - Question 29

A ___________is made of two or more atoms joined together.

Model Papers -1 - Question 30

Read the following experiment carefully.

  • 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?

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