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
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:
Q.2
Refer to the given diagram and select the incorrect option regarding X and Y:
Q.3
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.4
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.
Q.5
Label A, B, C and D in the following diagram:
Q.6
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 _________.
Q.7
Which of the following statements correctly describes the concept of sustainable development?
Planned growth with minimum damage to the environment
Growth irrespective of the extent of damage caused to the environment
Stopping all developmental work to conserve the environment
Growth that is acceptable to all the stakeholders
Q.8
What volume of hydrogen gas at 273 K and 1 atm pressure will be consumed in obtaining 21.6 g of boron (At. mass: 10.8) from the reduction of BCl3 by hydrogen?
Q.9
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?
Q.10
Which environmental hazard is not contributed by the combustion of fossil fuels?
Your Score: 0/10
Answers to Sample Questions from CREST Olympiads:
Q.1
c
Q.2
a
Q.3
a
Q.4
d
Q.5
a
Q.6
b
Q.7
a
Q.8
c
Q.9
b
Q.10
c
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 : c | Q.2 : a | Q.3 : a | Q.4 : d | Q.5 : a | Q.6 : b | Q.7 : a | Q.8 : c | Q.9 : b | Q.10 : c
