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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 |
Refer to the given diagram and select the incorrect option regarding X and Y: ![]() |
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Q.2 |
Fill in the blank: When Ca(NO3)2 is heated, it gives CaO, NO2(g) and O2(g). The correct number of moles of Ca(NO3)2, CaO, NO2(g) and O2(g) are present in the reaction are respectively _________. |
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Q.3 |
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.4 |
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: |
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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 |
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. |
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Q.7 |
Choose the correct option and complete the following sentence: Sexual reproduction causes genetic variation because of _____________.
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Q.8 |
Match List I (Vegetative propagation type) with List II (Example):
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Q.9 |
Study the circuit given below and determine the effective resistance (in Ω) between A and B: ![]() |
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Q.10 |
Fill in the blank: Neutral water with pH of about 7 becomes slightly acidic when aerated. This is because ________________. |
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Your Score: 0/10
Students can find the most recent CREST Science Olympiad previous year paper pdf for class 10 on this page. The pdf is easily downloadable & answer key for all the questions is also provided on the last page.
CREST Science Olympiad previous year papers become quite useful while preparing for the CREST Science Olympiad exam. Below are some advantages of referring to the previous year papers -
Students can also refer to the following resources to level up their CREST Science Olympiad (CSO) exam preparation for class 10 -
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 : a | Q.2 : b | Q.3 : c | Q.4 : b | Q.5 : a | Q.6 : d | Q.7 : d | Q.8 : b | Q.9 : a | Q.10 : d