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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 |
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? |
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Q.2 |
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.3 |
In the following question, an assertion and a reason are given. Choose the correct option: Assertion (A): Generally, the colour of indicators changes in a particular pH range. Reason (R): Indicators are weak acids or weak bases and exhibit different colours in molecular form and ionic form. |
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Q.4 |
Which of the following statements correctly describes the concept of sustainable development?
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Q.5 |
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.6 |
Fill in the blank: An electric current through a horizontal metal wire flows in East to West direction, the direction of the magnetic field at a point directly above it is from ___________. |
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Q.7 |
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. |
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Q.8 |
Length and diameters of four wires of same material are given below. The resistance of which of the following wires will be minimum? |
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Q.9 |
Choose the correct option and complete the following sentence: Sexual reproduction causes genetic variation because of _____________.
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Q.10 |
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? |
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Your Score: 0/10
Answers to Sample Questions from CREST Olympiads:
Q.1 : b | Q.2 : a | Q.3 : a | Q.4 : a | Q.5 : b | Q.6 : d | Q.7 : a | Q.8 : c | Q.9 : d | Q.10 : b