CREST Science Olympiad Class 10 Previous Year Paper
Getting ready for the Class 10 Science Olympiad? Practising with previous year question papers is one of the smartest ways to prepare. These papers help students understand the level of questions asked and focus on the most important concepts during revision.
Why These Papers Are a Must-Have
They include questions from vital topics like Chemical Reactions and Equations, Acids, Bases and Salts, Metals and Non-metals etc.
They help improve speed, accuracy, and confidence when solving science problems under exam conditions.
Each paper comes with an answer key, making self-assessment easy and effective.
Download the Science Olympiad Previous Year Paper for Class 10 (PDF) and help your child revise smarter, practice better, and perform their best on exam day.
Section 1: Chemical Reactions and Equations, Acids, Bases and Salts, Metals and Non-metals, Carbon and its Compounds, Periodic Classification of Elements, Life Processes, Reproduction in Organisms, Heredity and Evolution, Light-Reflection and Refraction, Human Eye and Colourful World, Electricity, Magnetic Effects of Electric Current, Sources of Energy, Our Environment and its Management.
Achievers Section: Higher Order Thinking Questions - Syllabus as per Section 1
A myopic person has a power of -1.25 dioptre. What is the focal length and nature of his lens?
Q.2
In the following question, an assertion and a reason are given. Choose the correct option:
Assertion (A): In a motion picture, usually 24 frames are projected every second over the whole length of the film.
Reason (R): An image formed on the retina of eye persists for about 1/15s after the removal of the stimulus.
Q.3
In the following question, an assertion and a reason are given. Choose the correct option:
Assertion: Bending a wire increases the electrical resistance.
Reason: Resistance of wire is inversely proportional to the length of the material.
Q.4
26 g of an alloy of copper and zinc reacts with H2SO4 releasing 4.48 L of H2 at STP. What is the percentage of zinc in the alloy?
Q.5
Fill in the blank:
When 480 plants are produced in the F2 generation of dihybrid cross made with pure breeding plants, the total number of plants with parental combinations obtained is __________.
Q.6
The reaction of KMnO4 and HCl results in:
Q.7
Which of the following statements is/are true?
I. The lattice structure of diamond and graphite are different. II. Graphite is an impure form of carbon while diamond is pure form. III. Graphite conducts electricity while diamond does not. IV. Graphite has a lower density than diamond.
Q.8
Answer the following questions:
Which of the following would not change the pH of 10 cm3 of dilute HCl when added to the acid?
Identify the salt whose aqueous solution has the highest pH at the same temperatures.
How many times a solution of pH = 2 is more acidic than a solution of pH = 6?
Q.9
Consider the following statements:
If the sperm and ovum are fertilised in the uterus, then the baby born as a result is known as a test tube baby.
The rupture of Graafian follicles to produce ovum is called capacitation.
Tubectomy is a surgical procedure that prevents the entry of sperms into the uterus.
The involvement of two organisms of the same species to produce a new offspring is known as asexual reproduction.
Which of the above statement(s) is/are incorrect?
Q.10
Consider the following statements and choose the correct option:
I. Photolysis of water involves the breakdown of water by light. II. The specific function of light energy in the process of photosynthesis is to activate chlorophyll. III. One of the by-product of photosynthesis is oxygen.
Answers to Previous Year Questions from CREST Olympiads:
Q.1
d
Q.2
c
Q.3
c
Q.4
d
Q.5
a
Q.6
b
Q.7
d
Q.8
d
Q.9
d
Q.10
d
Additional Preparation Resources
Students can also refer to the following resources to level up their CREST Science Olympiad (CSO) exam preparation for class 10 -
CREST Science Worksheets Package for class 10 - 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 10 - 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 10 for free.
Note: Don’t forget to download the CREST Science Olympiad past year paper pdf for class 10.
Answers to Previous Year Questions from CREST Olympiads:
Q.1 : d | Q.2 : c | Q.3 : c | Q.4 : d | Q.5 : a | Q.6 : b | Q.7 : d | Q.8 : d | Q.9 : d | Q.10 : d
