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Olympiad Test: Achievers Section-4 - Class 7 MCQ


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10 Questions MCQ Test Science Olympiad Class 7 - Olympiad Test: Achievers Section-4

Olympiad Test: Achievers Section-4 for Class 7 2024 is part of Science Olympiad Class 7 preparation. The Olympiad Test: Achievers Section-4 questions and answers have been prepared according to the Class 7 exam syllabus.The Olympiad Test: Achievers Section-4 MCQs are made for Class 7 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Achievers Section-4 below.
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Olympiad Test: Achievers Section-4 - Question 1

Which of the following are stages of mitosis?
I. Prophase
II. Metaphase
III. Anaphase
IV. Telophase

Detailed Solution for Olympiad Test: Achievers Section-4 - Question 1
Mitosis consists of prophase (I), metaphase (II), anaphase (III), and telophase (IV).
Olympiad Test: Achievers Section-4 - Question 2

Which of the following processes occur during protein synthesis?
I. Transcription
II. Translation
III. Replication
IV. Splicing

Detailed Solution for Olympiad Test: Achievers Section-4 - Question 2
Protein synthesis involves transcription (I) and translation (II). Replication (III) is related to DNA replication, and splicing (IV) occurs during RNA processing but is not a part of protein synthesis itself.
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Olympiad Test: Achievers Section-4 - Question 3

Which of the following are types of chemical bonds?
I. Ionic
II. Covalent
III. Metallic
IV. Hydrogen

Detailed Solution for Olympiad Test: Achievers Section-4 - Question 3
Chemical bonds include ionic (I), covalent (II), metallic (III), and hydrogen (IV) bonds.
Olympiad Test: Achievers Section-4 - Question 4
Which of the following are characteristics of acids?
I. They turn litmus paper red.
II. They taste bitter.
III. They have a pH less than 7.
IV. They release hydrogen ions in solution.
Detailed Solution for Olympiad Test: Achievers Section-4 - Question 4
Acids turn litmus paper red (I), have a pH less than 7 (III), and release hydrogen ions in solution (IV). They taste sour, not bitter (II).
Olympiad Test: Achievers Section-4 - Question 5
Which of the following are renewable energy sources?
I. Solar power
II. Wind power
III. Natural gas
IV. Biomass
Detailed Solution for Olympiad Test: Achievers Section-4 - Question 5
Renewable energy sources include solar power (I), wind power (II), and biomass (IV). Natural gas (III) is a non-renewable fossil fuel.
Olympiad Test: Achievers Section-4 - Question 6
Which of the following statements about ecosystems are correct?
I. Ecosystems include both biotic and abiotic components.
II. Energy flow in ecosystems is unidirectional.
III. Nutrients are recycled within ecosystems.
IV. Ecosystems are self-sustaining and do not require external inputs.
Detailed Solution for Olympiad Test: Achievers Section-4 - Question 6
Ecosystems include both biotic and abiotic components (I), energy flow is unidirectional (II), and nutrients are recycled (III). Ecosystems do require external inputs (IV) to maintain their structure and function.
Olympiad Test: Achievers Section-4 - Question 7
Which of the following are examples of metamorphic rocks?
I. Granite
II. Schist
III. Marble
IV. Basalt
Detailed Solution for Olympiad Test: Achievers Section-4 - Question 7
Examples of metamorphic rocks include schist (II) and marble (III). Granite (I) is an igneous rock, and basalt (IV) is also an igneous rock.
Olympiad Test: Achievers Section-4 - Question 8
Which of the following statements about acids are true?
I. They turn blue litmus paper red.
II. They have a bitter taste.
III. They release hydroxide ions in solution.
IV. They react with metals to produce hydrogen gas.
Detailed Solution for Olympiad Test: Achievers Section-4 - Question 8
Acids turn blue litmus paper red (I) and react with metals to produce hydrogen gas (IV). They do not have a bitter taste (II) or release hydroxide ions (III), which is a property of bases.
Olympiad Test: Achievers Section-4 - Question 9

Which of the following are properties of light?
I. Light exhibits both wave-like and particle-like properties.
II. Light travels faster in water than in air.
III. The speed of light in a vacuum is approximately 3 x 10^8 meters per second.
IV. Light can be polarized.

Detailed Solution for Olympiad Test: Achievers Section-4 - Question 9

Light exhibits both wave-like and particle-like properties (I), the speed of light in a vacuum is approximately 3 x 108 meters per second (III), and light can be polarized (IV). Light travels slower in water than in air, not faster (II).

Olympiad Test: Achievers Section-4 - Question 10
Which of the following are true regarding the process of natural selection?
I. It leads to the adaptation of species to their environment.
II. It occurs due to variation in the traits of individuals.
III. It involves differential survival and reproduction.
IV. It results in the creation of new species in one generation.
Detailed Solution for Olympiad Test: Achievers Section-4 - Question 10
Natural selection leads to the adaptation of species to their environment (I), occurs due to variation in traits (II), and involves differential survival and reproduction (III). The creation of new species in one generation (IV) is not a characteristic of natural selection, as speciation typically occurs over many generations.
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