NSO Science Olympiad Online Mock Test Class 4 Set B

1. 100 gms of three types of soil were put in a funnel and each funnel was put on an empty beaker using stands. Then 60 mL water was poured over each of them. The result is shown in the given figure. Identify the soil types and select the correct option.

2. Study the given diagram.
1. The phases of the Moon can be seen on ______ side of the Earth.
2. Which of the phases are as equally illuminated as the Earth?

3. The given graph shows the changes in amount of undigested food as it progresses through the alimentary canal. Select the incorrect option regarding the parts labelled as P, Q, R, S and T.

4. Refer to the given figure of different blood vessels. The arrows show the direction of the flow of blood. Which one of the following correctly describes about blood X and blood Y?  

5. Advika took a croton plant with shaded leaves and set up an experiment as shown here. After that she kept the plant in darkness for a few hours and then placed it in sunlight. After 6 hours, she performed iodine test on plucked leaves P, Q and R. Which of the following is the possible outcome?  

6. Gopal learned that the planet Jupiter has a mass that is about 318 times that of the Earth and that Mars has about 1/10 the mass of the Earth. Using this information, which of the following conclusions is incorrect about Mars, Jupiter and the Earth?

7. Which of the following statements does not hold true about the first aid given to an injured person?

8. Select the correct option regarding the substances you have identified as X, Y and Z.

9. Which of the following can be X, Y and Z?  

10. The girl ‘a’ is putting more efforts to pull the sack bag as compared to the girl ‘b’. Girl ‘a’ has to work against a force which also _____.  

11. Which of the following statements hold true regarding the given plants X and Y? 1. Plant X depends partly on animals for food but can also make its own food while plant Y cannot make its own food.
2. Plant X has chlorophyll while plant Y does not contain chlorophyll and is non-green.
3. In plant X, food is prepared by the green stem, whereas plant Y obtains its food from dead and decaying plants and animals.
4. Plant X and plant Y have patches of green colour. Only green part of their leaves performs photosynthesis.  

12. Which of the following statements is correct?

13. Refer to the given figure. Which of the following cannot be X?  

14. X is a slow means of transport which serves special purposes and is particularly useful for farmers. Which of these can be X?

15. Shashank filled a communicating vessel with water as shown in the picture. Then he tilted the vessel to left by putting a block under its right end. Which of the following options is the best illustration to show the water level in the vessel?

16. A shadow puppet is put between a light source and a screen as shown in the picture. What will happen to the size of the shadow when the puppet moves : X : nearer to the screen? Y : nearer to the light source?

17. Refer the given picture and select the correct option. 17 Savitri is a nomad. To earn bread, she works as a helper in three homes which are on different floors. She lives in ‘a’ and works in ‘b’. Which of the following options correctly identifies ‘a’ and ‘b’ in the figure?  

18. Amongst the given birds, which one has climbing claws with two toes in the front and two behind?

19. Water boils at ________ and freezes at ________.

20. Reena took some moong seeds and soaked them overnight in water. Next day, after draining out the water, she wrapped the seeds in a wet cloth. After one day, she observed small white structures growing out of the seeds. These small white structures will develop into ________.

21. Which of these animals is described in the given box?

22. Study the given graph carefully. The line QR shows the ________ stage of the mosquito.

23. Achin wanted to dig for earthworms in the garden. One hot afternoon, he got a small spade and dug deep into the ground before he found one earthworm. That night it rained heavily. Achin tried to look for earthworms again the next afternoon and this time he found more without having to dig very deep. This shows that earthworms prefer what kind of conditions in its habitat?
1. Dry conditions 2. Cool conditions 3. Moist conditions 4. Warm conditions

24. The descending order of heat conducting property of four metals a, b, c and d is a > b > c > d.
An experiment was conducted to find out how these different metals, when combined, will conduct heat. A small ball of candle wax was placed on one end and a flame near the other end. The set-ups are shown below. In which set-up will the wax drop off first ?

25. Which of the following can cause a sharp decrease in the size of a population?
1. Famine
2. Disease
3. Drought
4. Introduction of new prey
5. Introduction of new predator

26. In how many ways can Garima travel from Home to School, if moving North and West are not permitted?

27. _____ will replace the question mark in the given number pattern, if a certain rule is followed in the figures.

28. How many letters appear the same when rotated by 1/2 turn?

29. Which of the following options will complete the pattern in Figure (X)?

30. Select the correct match.

Figure Number of lines of symmetry

Figure Number of lines of symmetry

Figure Number of lines of symmetry

Figure Number of lines of symmetry

31. Select the correct order from the heaviest to the lightest.

32. Neha is standing in a row of children. If she is 13th from the right end and 19th from the left end, then how many children are standing in the row?

33. Find the next figure in the given figure pattern.

34. How many triangles are there in Figure (X)?

35. Select the correct mirror image of Figure (X).