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
Match column I with column II and select the correct answer using the codes given below:
Column I
Column II
1.
Element with a smallest atomic radius
a.
Ca
2.
Element with the largest atomic radius
b.
F
3.
Element with the highest electron affinity
c.
Cl
Q.2
Identify the correct sequence of fractions obtained when petroleum is subjected to fractional distillation:
Lubricating oil
Petrol
Petroleum ether
Diesel oil
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
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.5
When current flows in a long straight solenoid, north and south poles are created at the two ends. Which of the following statements is/are correct?
Q.6
Refer to the given diagram and select the incorrect option regarding X and Y:
Q.7
In the following question, an assertion and a reason are given. Choose the correct option:
Assertion: The magnetic field produced by a current-carrying solenoid is independent of its length and cross-section area.
Reason: The magnetic field inside the solenoid is uniform.
Q.8
Which of the following equations is the summary of photosynthesis?
Q.9
Match the entries of Column I with those of Column II:
Column I
Column II
1.
Stomata
a.
Anaerobic respiration
2.
Mangrove trees
b.
Intake of CO2
3.
Wood stem
c.
Pneumatophores
4.
Yeast
d.
Lenticels
Q.10
Which of the following would stop evolution by natural selection from occurring?
Your Score: 0/10
Answers to Sample Questions from CREST Olympiads:
Q.1
b
Q.2
c
Q.3
b
Q.4
a
Q.5
d
Q.6
a
Q.7
b
Q.8
c
Q.9
a
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 : c | Q.3 : b | Q.4 : a | Q.5 : d | Q.6 : a | Q.7 : b | Q.8 : c | Q.9 : a | Q.10 : d
