Organisation : CREST
Exam Name : CREST Science Olympiad (CSO)
Applicable For : Students in Grades KG-10
Download : Sample Paper
Year : 2024
Website : https://www.crestolympiads.com/science-olympiad-cso
What is CREST Science Olympiad?
The CREST Science Olympiad (CSO) is an international competitive exam held online for students in Grades KG-10. There will be 2 levels for students of all Grades i.e. KG-10. The exam is an objective-type test that the students need to complete in 60 minutes. For students of Classes KG and 1, the exam will be parent/teacher assisted. The time of the exam will be 45 minutes for KG students. Students can participate in the examination both through school and individually.
Related / Similar Question Paper : CREST Mathematics Olympiad (CMO) Sample Paper
How To Prepare For CREST Science Olympiad?
The first step towards CREST Science Olympiad preparation should be thoroughly reading and understanding each and every concept in the syllabus with full clarity. Lack of knowledge and understanding of the topics makes it difficult to understand Science Olympiad questions.
The second step toward Science Olympiad preparation must include a detailed timetable or a study plan to organize your studies. Students can also maintain notes in a format or language that is easy for them to revise at the last moment. Also, one of the most important things while preparing for the exam is to practice enough sample papers.
CREST Science Olympiad Class 10 Sample Paper
1. 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:
a. It is because the eye muscles cannot immediately adjust the focal length of the eye lens.
b. It is because the retina retains the bright image for some time and becomes momentarily insensitive.
c. It is because the iris is unable to contract the pupil immediately.
d. It is because the iris is unable to dilate the pupil immediately.
2. Which of the statements given below are correct?
I. Ohm’s law is not applicable at very low and very high temperatures.
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.
a. I, II and III
b. I, II and IV
c. I, III and IV
d. I, II, III and IV
3. Choose the correct option and complete the following sentence:
An electric motor consists of ____________.
I. rectangular coil of insulated copper wire
II. two poles of a magnetic field
III. split rings
IV. conducting brushes
a. I and II
b. I, II and III
c. I, II, III and IV
d. None of these
4. Which of the following equations is not an example of displacement reaction?
a. 2Al + Fe2O3 → Al2O3 + 2Fe
b. Ca + Cl2 → CaCl2
c. 2Kl + Cl2 → 2KCl + l2
d. 2Na + 2H2O → 2NaOH + H2
5. Fill in the blank:
Neutral water with pH of about 7 becomes slightly acidic when aerated. This is because ________________.
a. oxygen from the air is dissolved in the water which makes the water acidic
b. dirt, which gets contaminated with the water during aeration makes the water acidic
c. ultraviolet radiation dissociates water molecules and makes water acidic
d. it absorbs carbon dioxide from air
6. Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?
a. Aluminium
b. Chromium
c. Nickel
d. Tungsten
7. Which of the following equations is the summary of photosynthesis?
a. 6CO2 + 12H2O → C6H12O6 + 6O2 + 6H2O
b. 6CO2 + H2O + Sunlight → C6H12O6 + O2 + 6H2O
c. 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6O2 + 6H2O
d. 6CO2 + 12H2O + Chlorophyll → C6H12O6 + 6CO2 + 6H2O
8. In the following question, an assertion and a reason are given. Choose the correct option:
Assertion (A): A person, who has suffered from smallpox can be recommended for providing nursing care to the victims of smallpox than the person who hadn’t suffered from smallpox.
Reason (R): The immune system of the person who had suffered from smallpox remembers the microbes causing smallpox and responds vigorously on the next encounter.
a. Both A and R are true and R is the correct explanation of A
b. Both A and R are true, but R is not the correct explanation of A
c. A is true, but R is false
d. Both A and R are false
9. The formation of the ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?
a. Presence of prominent tropospheric turbulence and inflow of chlorofluorocarbons.
b. Absence of polar front and stratospheric clouds and inflow of methane and chlorofluorocarbons.
c. Presence of prominent polar front and stratospheric clouds and inflow of chlorofluorocarbons.
d. The increased temperature at the polar region due to global warming.
10. Arrange the following in the increasing order of ease of oxidation:
(A) SO4-2 (B) F-1 (C) Br-1 (D) OH-
a. A B D C
b. B C D A
c. C D B A
d. A B C D
Download CREST Science Olympiad Sample Paper
CREST Science Olympiad Paper For Class KG:
https://www.pdfquestion.in/uploads/pdf2024/43068-kg.pdf
CREST Science Olympiad Paper For Class 1:
https://www.pdfquestion.in/uploads/pdf2024/43068-c1.pdf
CREST Science Olympiad Paper For Class 2:
https://www.pdfquestion.in/uploads/pdf2024/43068-c2.pdf
CREST Science Olympiad Paper For Class 3:
https://www.pdfquestion.in/uploads/pdf2024/43068-c3.pdf
CREST Science Olympiad Paper For Class 4:
https://www.pdfquestion.in/uploads/pdf2024/43068-c4.pdf
CREST Science Olympiad Paper For Class 5:
https://www.pdfquestion.in/uploads/pdf2024/43068-c5.pdf
CREST Science Olympiad Paper For Class 6:
https://www.pdfquestion.in/uploads/pdf2024/43068-c6.pdf
CREST Science Olympiad Paper For Class 7:
https://www.pdfquestion.in/uploads/pdf2024/43068-c7.pdf
CREST Science Olympiad Paper For Class 8:
https://www.pdfquestion.in/uploads/pdf2024/43068-c8.pdf
CREST Science Olympiad Paper For Class 9:
https://www.pdfquestion.in/uploads/pdf2024/43068-c9.pdf
CREST Science Olympiad Paper For Class 10:
https://www.pdfquestion.in/uploads/pdf2024/43068-c10.pdf