Help your child excel in the Science Olympiad with the Class 10 sample paper. It's a great tool to practise important topics and understand the exam structure.
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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
| Q.1 | Q.2 | Q.3 | Q.4 | Q.5 | Q.6 | Q.7 | Q.8 | Q.9 | Q.10 |
Q.1 |
When SO2 is passed through a solution of K2Cr2O7 turns green. Which of the following correctly shows the change in the oxidation state of chromium and sulphur? |
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Q.2 |
A convex mirror of focal length f produces an image 1/nth of the size of the object. Calculate the distance of the object from the mirror: |
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Q.3 |
Fill in the blank: Neutral water with pH of about 7 becomes slightly acidic when aerated. This is because ________________. |
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Q.4 |
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: |
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Q.5 |
It is possible to measure the passage of 50 electrons per sec with a certain sensitive device. This corresponds to a current of: |
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Q.6 |
Fill in the blank: When a ray of light falls on a transparent glass plate, a part of it is reflected and a part is refracted. The reflected and refracted rays can be perpendicular to each other for ____________. |
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Q.7 |
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. |
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Q.8 |
Identify the correct sequence of fractions obtained when petroleum is subjected to fractional distillation:
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Q.9 |
Which of the following metals cannot be refined by electrolytic refining? (i) Au |
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Q.10 |
Refer to the given diagram and select the incorrect option regarding X and Y: ![]() |
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Your Score: 0/10
Answers to Sample Questions from CREST Olympiads:
Q.1 : b | Q.2 : c | Q.3 : d | Q.4 : d | Q.5 : a | Q.6 : c | Q.7 : d | Q.8 : c | Q.9 : d | Q.10 : a