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NSO Mock Test – Class 7
NSO Mock Tests for Class 7 is designed for National Science Olympiad Preparation.
The NSO Class 7 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 7 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
Fill in the blank :
The line segment joining a vertex of a triangle to the mid-point of its opposite side is called a ______ of the triangle.
Question 2 of 50
2. QuestionCategory: Mental Ability
Which of the following solids is made of the greatest number of unit cubes ?
Question 3 of 50
3. QuestionCategory: Mental Ability
A freezing process requires the room temperature to be lowered from 40°C at the rate of 8°C every hour. The room temperature 4 hours after the process begins is _______.
Question 4 of 50
4. QuestionCategory: Mental Ability
What is the smallest number of squares that must be added so that the line AB becomes a line of symmetry?
Question 5 of 50
5. QuestionCategory: Mental Ability
The entrance charges for a resort are shown in the given table.
Mr. Rajiv drove to the resort with his wife Radhika and three children on Saturday at 1.30 pm. They left the resort at 8 p.m on the same day. How much did Mr. Rajiv and his family have to pay in all ?
Entrance Fee ₹ 200 per car Monday to Friday ₹ 75.50 per passenger Saturday and Sunday ₹ 110.50 per passenger Parking charges ₹ 40.50 per hour
Question 6 of 50
6. QuestionCategory: Mental Ability
Find the missing figure in the given series ?
Question 7 of 50
7. QuestionCategory: Mental Ability
Megha’s salary in September was ₹ 18,000. Her salary in October was ₹ 16,000. What was the percentage decrease in her salary?
Question 8 of 50
8. QuestionCategory: Mental Ability
Mohit borrowed ₹ 12,000 from his friend. He gave ₹ 2000 at 18% and the remaining amount at 15%. How much interest did he pay in 3 years?
Question 9 of 50
9. QuestionCategory: Mental Ability
If the code of RIGHT is SGJDY, what is UPDZJ the code for?
Question 10 of 50
10. QuestionCategory: Mental Ability
Beena bought 7/8 m of cloth. She used 2/3 m to sew a dress and 1/3 m of the remainder for a skirt. How much cloth did she have left?
Question 11 of 50
11. QuestionCategory: Mental Ability
Amit, Priya, Latika, Garima and Rahul all go into a shop.
- Only Garima buys a samosa.
- Priya, Latika and Rahul buy a chocolate each.
- Everyone except Priya buys an ice cream each.
- Priya is the only one who buys toffees.
- Nobody except Amit and Latika chooses a burger.
- Each of the girls buy a packet of chips.
Which child buys the most number of items?
Question 12 of 50
12. QuestionCategory: Mental Ability
In the given figure, PQ = PR and S is the midpoint of QR. Then ΔPSQ @ ΔPSR by ________ congruence.
Question 13 of 50
13. QuestionCategory: Mental Ability
What is the average number of ribbons made by the 5 girls ?
Question 14 of 50
14. QuestionCategory: Mental Ability
Which of the following conditions is INCORRECT on the basis of the given figure, where l || m?
Question 15 of 50
15. QuestionCategory: Mental Ability
Rohan is 12 years older than Kareena. After four years, Rohan’s age will be equal to thrice the age of Kareena. Find the present age of Rohan.
Question 16 of 50
16. QuestionCategory: Science
The warm water is poured slowly into a beaker of ice cubes as shown in figure. Which of the following options is correct, when the warm water was poured into the beaker?
1. The ice starts to melt.
2. The glass expands.
3. The temperature of the ice increases
4. The temperature of the warm water decreases.
Question 17 of 50
17. QuestionCategory: Science
In which direction does the frictional force always act on an object moving across a horizontal surface?
Question 18 of 50
18. QuestionCategory: Science
The graph shows the first few seconds of a car’s journey. From the graph it can be seen that the car travels
Question 19 of 50
19. QuestionCategory: Science
In the game of basketball, the ball is bounced (with no spin) towards a player at an angle of 40 degrees to the normal. What will be the angle of reflection?
Question 20 of 50
20. QuestionCategory: Science
How does cyclone decrease the fertility of the soil in the coastal areas?
Question 21 of 50
21. QuestionCategory: Science
In the figure Y, magnet P is experiencing ________.
1. Magnetic force of repulsion
2. Magnetic force of attraction
3. Elastic spring force
Question 22 of 50
22. QuestionCategory: Science
The temperature shown by a mercury-in-glass thermometer increases. Which of the following is constant?
Question 23 of 50
23. QuestionCategory: Science
When an electron moves from negative electrode to positive electrode,
Question 24 of 50
24. QuestionCategory: Science
Which of the following is not caused by friction or resistive forces?
Question 25 of 50
25. QuestionCategory: Science
The average velocity of a body is equal to mean of its initial velocity and final velocity. The acceleration of the body is
Question 26 of 50
26. QuestionCategory: Science
A reaction is carried out in a test tube as shown in figure. A gas comes out with hissing sound and bubbles. Which of the given test will confirm the presence of the gas which comes out?
Question 27 of 50
27. QuestionCategory: Science
Shuchi conducted an experiment to find the amount of light that could pass through four different materials. She recorded her results in the table below.
Material Amount of light (lux) P 30 Q 120 R 0 S 60
Question 28 of 50
28. QuestionCategory: Science
The table below shows the colours and solubilities of four solids in water.
Solid Colour Solubility in water W Blue Insoluble X Blue Soluble Y White Insoluble Z White Soluble
A mixture containing two solids is added to excess water, stirred and filtered.
A blue filtrate and a white residue are obtained. Which two solids are present in the mixture?
Question 29 of 50
29. QuestionCategory: Science
Five solutions have been taken in five test tubes labelled as A, B, C, D and E. They are tested with four indicators and the observations are recorded.
Solution Methyl Orange Blue litmus Red litmus Phenolphthalein A Red Red Red Colourless B Red Red Red Colourless C Yellow Blue Blue Pink D Orange Blue Red Colourless E Red Red Red Colourless
Which of the above solutions can neutralise each other?
Question 30 of 50
30. QuestionCategory: Science
Some blobs of wax are placed on a silver ring as shown in the diagram. If the ring is heated at X, then choose the correct option regarding the melting of wax because of heating.
Question 31 of 50
31. QuestionCategory: Science
Reena prepared China rose indicator by keeping the petals of the flower in hot water for some time. She used the coloured solution for testing three solutions A, B and C. Solution A turns to
dark pink, solution B remains light pink and solution C turns to green. Mark the correct option.
Solution A Solution B Solution C (A) Lemon juice Sugar solution Milk of magnesia (B) Lemon juice Orange juice Sugar solution (C) Sugar solution Vinegar Sugar solution (D) Salt solution Milk of magnesia Lemon juice
Question 32 of 50
32. QuestionCategory: Science
The given flow chart is used to show some similarities and differences among four objects P, Q, R and S. One of the objects is a copper coin. Identify the copper coin from the given information.
Question 33 of 50
33. QuestionCategory: Science
The given diagram shows a covered cup of hot chocolate. After some time, most of the heat from the hot chocolate is lost to the Surroundings through the _________.
Question 34 of 50
34. QuestionCategory: Science
Observe the given Venn diagram. What does X and Y show ?
Question 35 of 50
35. QuestionCategory: Science
Priya wants to test presence of proteins in some food items. She took a cup of milk, some groundnuts and a raw potato. She made a paste of raw potato and powder of groundnuts by mashing and grinding them. She put equal quantities of three food items in three different test tubes and added, using a dropper ten drops of water, two drops of copper sulphate solution and ten drops of caustic soda solution to each test tube. She shook well all the three test tubes and let them stand for a few minutes. What result would she get for the test she performed ? [(+) indicates violet colour]
Question 36 of 50
36. QuestionCategory: Science
Read the given activity. What would you most likely observe for the plant and why ?
Take a potted plant. Put it in a cardboard box and close the box. Make a hole on one side of the cardboard box in such a way that light enters only through this hole. Keep watering the plant
regularly for a few days.
Question 37 of 50
37. QuestionCategory: Science
Arpita took a strip of blotting paper of 3 cm × 5 cm and clipped one half on the upper surface and the other half on the lower surface of a leaf. What would she most likely observe after one hour ?
Question 38 of 50
38. QuestionCategory: Science
Leaves may be simple or compound. Which of the given figures can be called as compound leaves?
Question 39 of 50
39. QuestionCategory: Science
Which among the following is an odd one ?
Question 40 of 50
40. QuestionCategory: Science
Which of the following encloses the portion of your body below the stomach ?
Question 41 of 50
41. QuestionCategory: Science
Charkha is used for ______.
Question 42 of 50
42. QuestionCategory: Science
“Fats are stored beneath the skin and around the heart and kidneys”. It is because _______.
Question 43 of 50
43. QuestionCategory: Science
Select the correct pair.
Question 44 of 50
44. QuestionCategory: Science
The function of scissors is synonymous with the function of _____.
Question 45 of 50
45. QuestionCategory: Science
Match Column-I with Column-II and select the correct option from the codes given below.
Column-I Column-II (a) Salivary gland (i) Breaks down fats (b) Intestinal gland (ii) Breaks down proteins into peptides (c) Pancreas (iiI) Breaks down peptides into amino acids (d) Liver (iv) Breaks down starch into sugar
Question 46 of 50
46. QuestionCategory: Science
Which of the following is incorrect regarding exhalation process in breathing mechanism ?
Question 47 of 50
47. QuestionCategory: Science
Garima took a plant and placed it in the dark for 24 hours to de-starch its leaves. After that she performed an activity as shown here.
(i) She put one leaf (marked as X) in clean plastic bag containing soda lime and another leaf (marked as Y) in a clean plastic bag containing water. Then she left the plant in sunlight for 6 hours.
(ii) She took out the leaves and boiled them in alcohol.
(iii) She performed the iodine test on the leaves.
Select the option with correct iodine test results and the conclusions of the activity
Question 48 of 50
48. QuestionCategory: Science
‘Silk has come under fire from animal rights activists’. Why ?
Question 49 of 50
49. QuestionCategory: Science
Sandeep has three soil samples X, Y and Z, each with weight 50 g. 100 mL of water is poured drop by drop with the help of a dropper on all the soil samples. The given graph shows weight of water absorbed by each soil sample.
Select the correct option regarding the soil samples.
Question 50 of 50
50. QuestionCategory: Science
The given figure shows _____.