Section 1: Crop Production and Management, Microorganisms, Synthetic Fibres and Plastics, Metals and Non-metals, Coal and Petroleum, Combustion and Flame, Conservation of Plants and Animals, Cell, Reproduction and Endocrine System, Force and Pressure, Friction, Sound, Chemical Effects of Electric Current, Some Natural Phenomena, Light, Stars and the Solar System, Pollution of Air and Water.
Achievers Section: Higher Order Thinking Questions - Syllabus as per Section 1
In the given question, an assertion and a reason are given. Choose the correct option:
Assertion: The temperature increases inside the fractionating column on going from the bottom to the top.
Reason: The column is not heated at the bottom.
Q.2
Consider the following statements about the physical and chemical properties of metals and choose the correct option:
1. All metals are ductile. 2. Generally metals are ductile. 3. Metals which are more reactive than hydrogen react with acids to release hydrogen gas. 4. All metals react with acids to release hydrogen gas.
Q.3
Fill in the blank:
Equal force F acts on isolated bodies A and B as shown. The mass of B is three times that of A. The magnitude of the acceleration of A is ___________.
Q.4
Arrange the different types of coal in the decreasing order of the quality of coal:
Read the following statements and choose the correct option:
Statement 1: The antibiotic penicillin inhibits the growth of bacteria by blocking the process which helps to build its cell membrane.
Statement 2: The cell membrane is selectively permeable because it allows the movement of certain molecules in and out of the cell while the movement of other molecules is prevented.
Q.6
When a ray of light strikes a plane mirror at an angle of 15o with the mirror, what will be the angle of reflection of the ray?
Q.7
Which of the following is correct definition of ignition temperature?
Q.8
When the angle between two plane mirrors is 60o, how many multiple images will be formed by the mirrors?
Q.9
Consider the following statements and choose the correct option:
Statement 1: The ignition temperature of white phosphorus is nearly equivalent to the temperature of the earth.
Statement 2: Combustion of fuel by motor vehicles is an example of spontaneous combustion.
Answers to Previous Year Questions from CREST Olympiads:
Q.1
d
Q.2
b
Q.3
a
Q.4
a
Q.5
b
Q.6
c
Q.7
b
Q.8
a
Q.9
d
Q.10
b
Students can download the CREST Science Olympiad previous year paper pdf for class 8 from this page. Each question in the paper carries 1 mark. The answer key for all the questions is also provided on the last page.
One of the most significant advantages of solving the past years’ papers is that it helps students improve their time management skills, strengthens their understanding of concepts and aids them in applying the concepts they have mastered. Also, solving previous years’ papers a few days before the exam can help students to revise the concepts quickly. Therefore, students must refer to previous years' papers before appearing for the final exam as many advantages are associated with it.
Additional Preparation Resources
Students can also refer to the following resources to level up their CREST Science Olympiad (CSO) exam preparation for class 8 -
CREST Science Worksheets Package for class 8 - It is a package of 5 worksheets. The worksheets are in the same pattern as the previous year paper. Hence, very useful for preparation. Existing users can purchase additional practice worksheets by following these steps: Login at https://www.crestolympiads.com/login -> Dashboard -> Additional Practice -> Buy & new users can visit https://www.crestolympiads.com/registration
CREST Science Olympiad book for class 8 - The book covers topic-wise reading material, chapter-wise practice questions with answer key & contains the previous year paper. The book is available in both physical and pdf formats. Proceed now to purchase the Olympiad book. Also, students can view & download the first chapter of the Science Olympiad book for class 8 for free.
Note: Don’t forget to download the CREST Science Olympiad past year paper pdf for class 8.
Answers to Previous Year Questions from CREST Olympiads:
Q.1 : d | Q.2 : b | Q.3 : a | Q.4 : a | Q.5 : b | Q.6 : c | Q.7 : b | Q.8 : a | Q.9 : d | Q.10 : b
