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
The diagram shows the process of purification of copper metal. A thick copper plate A of impure copper and a thin pure copper plate B are immersed in a metal sulphate solution and an electric current is passed through it. 1. Which metal solution is taken as electrolyte? 2. Which electrode is connected to the positive terminal of the battery?
Q.2
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.3
Stars twinkle but planets do not twinkle.
Which of the following is the correct reason for the above-given statement?
Q.4
A force of 16 N is distributed uniformly on one surface of a cube of edge 4 m. Find the pressure on this surface:
Q.5
Four students made the following statements about the metals:
Robert: Metals are malleable.
Arya: All metal oxides are acidic in nature.
James: Metals have lustre.
Peter: Metal atoms have 1, 2 or 3 electrons in the outermost shell.
Which among them spoke incorrectly?
Q.6
Arrange the different types of coal in the decreasing order of the quality of coal:
What benefit does yeast gain from carrying out fermentation?
Q.8
Which of the following shows the correct sequence (in the increasing order) of heat energy received per unit area from the Sun measured on Earth, Mars and Jupiter?
Q.9
Susan was walking on ice, her mother advised her to take smaller steps to avoid slipping. Which of the following could be the reason for the smaller steps?
Q.10
Identify the group(s) which contain all synthetic substances:
Answers to Previous Year Questions from CREST Olympiads:
Q.1
a
Q.2
d
Q.3
c
Q.4
a
Q.5
b
Q.6
a
Q.7
b
Q.8
a
Q.9
c
Q.10
c
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 : a | Q.2 : d | Q.3 : c | Q.4 : a | Q.5 : b | Q.6 : a | Q.7 : b | Q.8 : a | Q.9 : c | Q.10 : c
