Level 1 ISO Previous Year Papers Class 1

Level 1 ISO Previous Year Papers Class 1 help students to prepare themselves for the Science Competitive exams of Class 1 and also helps them to achieve excellence in their academics. It is a valuable resource for students preparing for said Science Olympiad Exam. The Olympiad exam is very important in determining one's career path. For exam preparation, students must leave no stone unturned. Previous year science Olympiad previous year question papers for class 1 are based on the board's formal curriculum and include questions covering the majority of the course's important topics. Brief solutions are also offered with the sample papers to assist students in evaluating their exam preparation. Solving as many papers as possible in order to cover every topic on the syllabus. This will undoubtedly help students perform better in their forthcoming Olympiad exams.


Total Questions : 40

Time : 65 Minutes


1. Additional 10 minutes will be given to students to fill up the student’s information before the start of the exam.
2. All questions are compulsory and carry equal marks. Use of calculator is not permitted.
3. There is only one correct answer, hence mark one choice only.
4. Rough work should be done on a blank sheet of paper.


1. What part of body pumps bold to every other part?
a. Lungs
b. Heart
c. Kidney
d. Liver


2. Which habitat is best for a cactus?
a. a pond
b. Desert
c. Rain forest
d. Lake


3. Which forms of energy are produced by a burning candle?
a. Heat and mechanical
b. Electrical and sound
c. Light and electrical
d. Heat and Light


4. In order to survive, animals need
a. roots, leaves, and stems
b. eyes, nose, and ears
c. light, soil, and nutrients
d. food, water, and air


5. Which colour fur will best protect a rabbit from a hawk in a snowy field?
a. Brown
b. Gray
c. White
d. Black


6. Which food is an example of a healthy snack?
a. An apple
b. A candy bar
c. Cookies
d. Potato chips


7. What is one healthy way that people can help to maintain their weight?
a. Washing their hands regularly
b. Brushing their twice daily
c. Sleeping 8 hours daily
d. Exercising regularly


8. What part of a part carries water to its leaves?
a. Stem
b. Root
c. Branches
d. Flower


9. What is the shape of the earth?
a. Circle
b. Spherical
c. Square
d. None


10. When a gas is turned into a liquid, the process is called

a. Condensation
b. Evaporation
c. Deposition
d. Sublimation


11. Which of the following parts of the sun is easily visible only during a total solar eclipse?
a. Core
b. Photosphere
c. Sunspots
d. Corona


12. Earth’s season are caused by which of the following ?
a. The tilt of the earth’s rotation relative to the ecliptic as earth revolves around the sun
b. The varying amount of sunspot activity
c. The earth’s orbit around the sun as an exlipse rather a circle
d. The rotation of during a 24-hour day


13. Which of the following is most likely to cause a rise in the average temperature of earth’s atmosphere in future?
a. Atomic warfare
b. CO2 from fossil fuels
c. Dust clouds from volcano
d. Depletion of earth’s ozone layer


14. The Accumulation of stress along the boundaries of lithospheric plates results in which of the following?
a. Earthquakes
b. Magnetic reversals
c. Hurricanses
d. Increased deposition of deep-sea sediments


15. Yeast, used in making bread is a
a. Fungus
b. Plant
c. Bacteria
d. Seed


16. A gas used as a disinfectant in drinking water is
a. Hydrogen
b. Oxygen
c. Fluorine
d. Chlorine


17. There are rings around which of the following?
a. Uranus
b. Mars
c. Jupiter
d. Saturn


18. The solar eclipse occurs when
a. The sun comes in between the moon and the earth
b. The earth comes in the between the sun and the moon
c. The moon comes in between the sun and the earth
d. None of the above


19. The removal of top soil by water or wind is called
a. Soil wash
b. Soil erosion
c. Soil creep
d. Silting of soil


20. The intensity of earthquakes is measured on
a. Richter scale
b. Secant scale
c. Platform scale
d. Beaufort scale


21. The hardest substance available on earth is
a. Platinum
b. Diamond
c. Quartz
d. Gold


22. The general direct flow of summer monsoon in India is
a. From South to North
b. From South West to South East
c. From South East to South West
d. From South West to North East


23. The dynamo is a device for converting
a. Heat energy into electrical energy
b. Mechanical energy into electrical energy
c. Magnetic energy into electrical energy
d. None of the above


24. The blue colour of the clear sky is due to
a. Diffraction of light
b. Dispersion of light
c. Reflection of light
d. Refraction of light


25. The animal which use sounds as its ‘eyes’ is
a. Dog
b. Cat
c. Snake
d. Bat


26. Spinach leaves are rich source of
a. Vitamin A
b. Iron
c. Carotene
d. Vitamin E


27. Select the one which is not a mixture
a. Air
b. Gasoline
c. LPG
d. Distilled water


28. What comes in the place of question mark?

a. 1
b. 2
c. 3
d. 4


29. What comes in the place of question mark?

a. 1
b. 2
c. 3
d. 4


30. What comes in the place of question mark?

a. 1
b. 2
c. 3
d. 4


31. Look at this series : 80,10, 70, 15, 60, ………… what number should come next?
a. 20
b. 25
c. 30
d. 50


32. Look at this series : 2, 6, 18, 54, …….. what number should come next?
a. 108
b. 148
c. 162
d. 216


33. Which tool will make the last scale balance ?

a. File
b. Axe
c. Hammer
d. File & Axe


Direction (34-35): Choose the picture that would go in the empty box so that the tow bottom pictures are related in the same way as the top two are related.

a. 1
b. 2
c. 3
d. 4



a. 1
b. 2
c. 3
d. 4


Direction (36-38): Every one of the following questions consists of related pair of words, followed by four pairs of words. Choose the pair that best represents a similar relationship to the one expressed in the original pair of words.

a. salt : Pepper
b. tire : bicycle
c. base : ball
d. sandals : shoes


a. metropolitan : urban
b. harvest : autumn
c. agrarian : benevolent
d. sleepy : nocturnal


a. scheme : agent
b. edit : manuscript
c. revise : writer
d. mention : opinion


39. Which of these simple machines does this model represent?

a. A pulley
b. A screw
c. A wedge
d. A lever


40. A. student is blindfolded and given several objects to feel. Which of these would he describe as hard and smooth?