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NSO Mock Test – Class 8
NSO Mock Tests for Class 8 is designed for National Science Olympiad Preparation.
The NSO Class 8 online mock test paper is free for all students.
This paper has 50 questions.
Time allowed is 60 minutes.
In total there are 50 questions including all sections.
The NSO Mock tests for Class 8 given here will help the student get an accurate idea of the types of questions asked in the National Science Olympiad and also help prepare timing and accuracy.
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Question 1 of 50
1. QuestionCategory: Mental Ability
If x=5+2√6, then (x-1)/√x is equal to ______.
Question 2 of 50
2. QuestionCategory: Mental Ability
If a company sells a car with a marked price of Rs 2,72.000 and gives a discount of 4% on Rs 2.00,000 and 2.5% on the remaining amount then the actual price charged by the company for the car is
Question 3 of 50
3. QuestionCategory: Mental Ability
The characters in given matrix follow a certain trend. row-wise or column-wise. Find out this trend and choose the missing character from the given options.
Question 4 of 50
4. QuestionCategory: Mental Ability
The difference between simple interest and compound interest on 2 years at 4% per annum is Rs 20. Then the sum is _________
Question 5 of 50
5. QuestionCategory: Mental Ability
The squares which should be shaded to make the adjoining figure symmetric is _______________
Question 6 of 50
6. QuestionCategory: Mental Ability
Which of the following statements is correct?
Question 7 of 50
7. QuestionCategory: Mental Ability
The number of two digit numbers which are both perfect squares and perfect cubes is __________.
Question 8 of 50
8. QuestionCategory: Mental Ability
In the given matrix, find out which of the options completes the figure matrix?
Question 9 of 50
9. QuestionCategory: Mental Ability
The area of the adjoining polygon (not drawn to scale) is _______.
Question 10 of 50
10. QuestionCategory: Mental Ability
The sum of the digits of a 2-digit number is 12. If the new number formed by reversing the digits is greater than the original number by 54, then the original number is
Question 11 of 50
11. QuestionCategory: Mental Ability
In a certain code language, ‘put tir fin’ means ‘delicious juicy fruit’, ‘tie dip sig’ means ‘beautiful white lily’ and ‘sig Ion fin’ means ‘lily and fruit’. Which of the following stands for ‘and’ in that language?
Question 12 of 50
12. QuestionCategory: Mental Ability
The given pie-chart shows the percentage of Literate and Illiterate-Males and Females in a city.
The difference between the number of Literate Males and Literate Females is ______________.
Question 13 of 50
13. QuestionCategory: Mental Ability
Simplify the following expression :
Question 14 of 50
14. QuestionCategory: Mental Ability
In the set of problem figures, there is a definite relationship between figures P and Q. Establish a similar relationship between figures R and S by selecting a suitable figure from the options that would replace the question mark (?) in the Problem Figures.
Question 15 of 50
15. QuestionCategory: Mental Ability
A cistern from inside is 12.5 m long, 8.5 m broad and 4 m high and is open at top. The cost of cementing the inside of a cistern at Rs 24 per sq in is ______________.
Question 16 of 50
16. QuestionCategory: Science
A thin tube contains a thread of mercury which traps air at the end of the tube. The other end of the tube is open to the atmosphere. When the tube is turned upside down, the volume of the trapped air increases.
It is because____________.
Question 17 of 50
17. QuestionCategory: Science
Which of the following does not produce a sound wave?
Question 18 of 50
18. QuestionCategory: Science
A candle is placed before a thick plane mirror. When looked obliquely in the mirror a number of images are seen from the surface of the plane mirror. Which of the following statements is correct?
Question 19 of 50
19. QuestionCategory: Science
On holding a stainless steel spoon near our face. we see
Question 20 of 50
20. QuestionCategory: Science
During a thunderstorm, an observer can see lightning before hearing its thunder. Why does he see lightning before he hear thunder ?
Question 21 of 50
21. QuestionCategory: Science
The given graph illustrates the motion of an object. Which feature of the graph represent the distance travelled by the object moving at a constant speed?
Question 22 of 50
22. QuestionCategory: Science
Sonic vibrations were sent down from a ship return after 2 seconds. What is the depth of the sea, if the speed of sound in water is 1.5 km s-1 ?
Question 23 of 50
23. QuestionCategory: Science
Which of the following planets can be seen with naked eye ?
Question 24 of 50
24. QuestionCategory: Science
A cook makes a pudding as shown. The pudding is placed in a very hot oven until the top of the egg whites turns brown. It is then removed from the oven.
Why does the ice cream stay cold?
Question 25 of 50
25. QuestionCategory: Science
Read the given statements and mark the correct option.
Statement 1 : When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in forward direction.
Statement 2 : The frictional force acts only when the bodies are in contact.
Question 26 of 50
26. QuestionCategory: Science
Question 27 of 50
27. QuestionCategory: Science
Which of the following cannot be charged easily by friction ?
Question 28 of 50
28. QuestionCategory: Science
Three stand student stand 2 m apart in front of a plane mirror that is 3 m long. Student y is standing at the mid point of the mirror. How many student(s) can see the image of the other two ?
Question 29 of 50
29. QuestionCategory: Science
A car driver took a total of two hours to make a journey of 75 km. He had coffee break of half an hour and spent quarter of an hour stationery in traffic jam. What was his average speed during the journey ?
Question 30 of 50
30. QuestionCategory: Science
Taking one light year equal to 9.4 * 1015 m and one day equal to 86400 s, What will be the speed of light in light year per day if the speed of light in m s-1 is 3 * 108 ?
Question 31 of 50
31. QuestionCategory: Science
Sudha took a small amount of sulphur in deflagrating spoon and heated it over a burner. As soon as it started burning she put it in a gas jar and converted with a lid. After sulphur stopped burning she added a small amount water in it and dissolved the gas in water by shacking it. She then tested the solution with red and blue litmus paper. What did she observe ?
Question 32 of 50
32. QuestionCategory: Science
Question 33 of 50
33. QuestionCategory: Science
Ramesh mixed some iron filings with some sulphur in a china dish. In other dish he mixed iron filings and sulphur powder and heated the mixture.
Which of his observations is not correct ?
Question 34 of 50
34. QuestionCategory: Science
Given below are few statements.
I. When rubbed on fingers, bases give a soapy feeling.
II. The salt in neutralisation reaction may be acidic, basic or neutral.
III. Antacids are acids used to treat acidity and indigestion.
Select the correct option.
Question 35 of 50
35. QuestionCategory: Science
Few Characteristics of three fuels X, Y and Z are given below.
X Y Z Not easily stored or transported Can be stored in tanks and transported through pipe Can be stored in tanks and transported through pipe Extremely polluting Produce almost no pollution Moderrately polluting
Identify the X, Y and Z.
Question 36 of 50
36. QuestionCategory: Science
Three experiments to investigate the reactivities of three metals are shown.
What is the correct order of reactivity (most reactive → least reactive) for these three metals ?
Question 37 of 50
37. QuestionCategory: Science
Four experiments on rusting are shown below.
Which two experiments can be used to show that air is needed for iron to rust ?
Question 38 of 50
38. QuestionCategory: Science
If raman opened the air-hole of a bunsen burner fully and lighted the burner, he will get _________ .
Question 39 of 50
39. QuestionCategory: Science
Select the correct which on rearranging gives the term for the ground water stored between layers of hard rock below the water table.
Question 40 of 50
40. QuestionCategory: Science
Question 41 of 50
41. QuestionCategory: Science
A schematic representation of the blood circulation is given. Which circulatory part are incorrectly placed in it ?
Question 42 of 50
42. QuestionCategory: Science
The given figures shows different layers of a forest labelled as W, X, Y and Z. Which layer is the habitat of many animal species like monkeys, orangutans, toucans and sloths as there is plenty of food available ?
Question 43 of 50
43. QuestionCategory: Science
Namita’s mother does not allow her to lie on the abdomen immediately after having food. What could most likely be the reason for this ?
Question 44 of 50
44. QuestionCategory: Science
Question 45 of 50
45. QuestionCategory: Science
The given figure shows an irrigation method used in agriculture practise.
Which of the following is correct regarding this irrigation method ?
Question 46 of 50
46. QuestionCategory: Science
Latika observed her grandmother adding lots of salt on unripe mangoes to prepare pickle. Her grandmother also added excess of oil in the pickle jar. What could be the reason for it. ?
Question 47 of 50
47. QuestionCategory: Science
Look at the given cell carefully. Identify the function of the part labelled ‘Y’.
Question 48 of 50
48. QuestionCategory: Science
Question 49 of 50
49. QuestionCategory: Science
Read the given statements and select the correct option.
Statement 1 : Aquatic animals produce large number of eggs and sperms necessary to ensure external fertilization.
Statement 2 : The eggs swim in water with the help of cilia, and fertilize the sperms.
Question 50 of 50
50. QuestionCategory: Science
Which of these is a behavioral adaptation ?