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
Which of the following is obtained in its pure form by the reaction of sugar and sulphuric acid?
Q.2
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.
Q.3
Olivia measured the focal length of a convex lens by focusing a parallel beam of yellow, violet and green colours at the principal axis. If fy, fv and fg are the respective focal lengths, then which among the following is the correct relation?
Q.4
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
Q.5
Match List I (Vegetative propagation type) with List II (Example):
Column I (Vegetative propagation type)
Column II (Example)
1.
Tuber eye
a.
Garlic
2.
Bulb
b.
Rose
3.
Cutting
c.
Potato
4.
Plantlets at margins of leaves
d.
Bryophyllum
Q.6
In the following question, an assertion and a reason are given. Choose the correct option:
Assertion (A): In any food chain, the number of organisms in any trophic level should always be less than that in its previous trophic level. Reason (R): Only 10 percent of total energy present in a trophic level is transferred to the next trophic level in any food chain.
Q.7
Study the circuit given below and determine the effective resistance (in Ω) between A and B:
Q.8
Identify the reaction which takes place at the anode when an aqueous solution of CuSO4 is electrolysed using platinum as anode:
Q.9
Which of the following equations is the summary of photosynthesis?
Q.10
Fill in the blank:
Neutral water with pH of about 7 becomes slightly acidic when aerated. This is because ________________.
Your Score: 0/10
Answers to Sample Questions from CREST Olympiads:
Q.1
b
Q.2
a
Q.3
b
Q.4
c
Q.5
b
Q.6
a
Q.7
a
Q.8
b
Q.9
c
Q.10
d
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 : b | Q.2 : a | Q.3 : b | Q.4 : c | Q.5 : b | Q.6 : a | Q.7 : a | Q.8 : b | Q.9 : c | Q.10 : d
