CREST Science Olympiad Class 10 Sample Paper

>> Join CREST Olympiads WhatsApp Channel for latest updates. Sample PDF of CREST Science Olympiad for Class 10:

If your web browser doesn't have a PDF Plugin. Instead you can Click here to download the PDF


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

Please visit for free preparation material.

Q.1 Q.2 Q.3 Q.4 Q.5 Q.6 Q.7 Q.8 Q.9 Q.10


When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while.

Identify the correct reason for the above statement:


Why shouldn't we light a candle in a closed room with people?


Fill in the blank:

Bronze is often used to make statues and medals whereas brass is used in making utensils, scientific apparatus and cartridges. Both brass and bronze are copper-containing alloys, yet they differ in their chemical composition for additionally containing ___________.


Which of the statements given below are correct?

I. Ohm's law is not applicable at very low and very high temperature.
II. Ohm's law is applicable to the semiconductor.
III. Ohm's law is not applicable to electron tubes, discharge tubes and electrolytes.
IV. If a 24-volt battery is connected to a 6-ohm resistor, the current passing through the resistor is 4 A.


An air bubble in a glass slab (μ = 3/2) is 6 cm deep when viewed from one face and 3 cm deep when viewed from the opposite face. Determine the thickness of the slab:


In the following question, an assertion and a reason are given. Choose the correct option:

Assertion (A): Children necessarily possess the same blood group as either of the parents.

Reason (R): The gene corresponding to the blood group has three alleles.


In the following question, an assertion and the reason are given. Choose the correct option:

Assertion (A): In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group.
Reason (R): In a group, the atomic radii generally increase from top to bottom.


If I1 is the first ionization potential, I2 is the second ionization potential, I3 is the third ionization potential and I4 is the fourth ionization potential of an element, then which of the following has the least value?


Length and diameters of four wires of same material are given below. The resistance of which of the following wires will be minimum?


Label A, B, C and D in the following diagram:

Your Score: 0/10

Answers to Sample Questions from CREST Olympiads:


Practicing sample papers for the CREST Science Olympiad for class 10 is the most effective way to achieve the highest possible score in the exams. Students learn to manage time and solve questions within the time limits by practicing sample papers. Science Olympiad previous years’ question papers for class 10 are considered to be the best means to know the variety and types of questions well that you might come across. Students willing to participate in the CREST Olympiad exams require to have a thorough understanding of the exam pattern which is only possible with regular practice of sample papers. CREST Olympiads makes available Science Olympiad previous year papers online for free download. 

Answers to Sample Questions from CREST Olympiads:

Q.1 : d | Q.2 : d | Q.3 : a | Q.4 : c | Q.5 : b | Q.6 : d | Q.7 : d | Q.8 : a | Q.9 : c | Q.10 : a