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Class 7 Exam  >  Class 7 Tests  >  Science Olympiad Class 7  >  Olympiad Test: Achievers Section-5 - Class 7 MCQ

Olympiad Test: Achievers Section-5 - Class 7 MCQ


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10 Questions MCQ Test Science Olympiad Class 7 - Olympiad Test: Achievers Section-5

Olympiad Test: Achievers Section-5 for Class 7 2024 is part of Science Olympiad Class 7 preparation. The Olympiad Test: Achievers Section-5 questions and answers have been prepared according to the Class 7 exam syllabus.The Olympiad Test: Achievers Section-5 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-5 below.
Solutions of Olympiad Test: Achievers Section-5 questions in English are available as part of our Science Olympiad Class 7 for Class 7 & Olympiad Test: Achievers Section-5 solutions in Hindi for Science Olympiad Class 7 course. Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free. Attempt Olympiad Test: Achievers Section-5 | 10 questions in 20 minutes | Mock test for Class 7 preparation | Free important questions MCQ to study Science Olympiad Class 7 for Class 7 Exam | Download free PDF with solutions
Olympiad Test: Achievers Section-5 - Question 1
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Which of the following statements about cells and their functions are correct?
(i) The nucleus controls most of the activities of the cell.
(ii) The cell membrane is selectively permeable.
(iii) Mitochondria are responsible for protein synthesis.
(iv) Ribosomes are known as the powerhouse of the cell.
(v) Chloroplasts are found in animal cells.

Detailed Solution for Olympiad Test: Achievers Section-5 - Question 1
The nucleus controls most of the cell's activities (i), and the cell membrane is selectively permeable (ii). Mitochondria are responsible for energy production, not protein synthesis. Ribosomes are involved in protein synthesis, not energy production. Chloroplasts are found in plant cells, not animal cells.
Olympiad Test: Achievers Section-5 - Question 2
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Identify the correct statements regarding photosynthesis.
(i) Photosynthesis occurs in the chloroplasts of plant cells.
(ii) Carbon dioxide and water are the raw materials for photosynthesis.
(iii) Oxygen is absorbed during photosynthesis.
(iv) Glucose is produced during photosynthesis.
(v) Photosynthesis releases energy in the form of ATP.

Detailed Solution for Olympiad Test: Achievers Section-5 - Question 2
Photosynthesis occurs in the chloroplasts (i), using carbon dioxide and water as raw materials (ii) and producing glucose (iv). Oxygen is released, not absorbed, and energy is stored in glucose, not ATP.
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Olympiad Test: Achievers Section-5 - Question 3
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Which statements are true about the human digestive system?
(i) Digestion starts in the mouth.
(ii) The stomach secretes bile.
(iii) The small intestine is the main site of nutrient absorption.
(iv) The large intestine absorbs water and forms feces.
(v) The pancreas produces insulin.

Detailed Solution for Olympiad Test: Achievers Section-5 - Question 3
Digestion begins in the mouth (i), the small intestine is the main site for nutrient absorption (iii), the large intestine absorbs water and forms feces (iv), and the pancreas produces insulin (v). The stomach does not secrete bile; the liver produces bile.
Olympiad Test: Achievers Section-5 - Question 4
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Select the correct statements about states of matter.
(i) Solids have a definite shape and volume.
(ii) Liquids have a definite volume but no definite shape.
(iii) Gases have neither a definite shape nor a definite volume.
(iv) Solids can flow like liquids.
(v) Gases are highly compressible.
Detailed Solution for Olympiad Test: Achievers Section-5 - Question 4
Solids have a definite shape and volume (i), liquids have a definite volume but no definite shape (ii), gases have neither a definite shape nor volume (iii), and gases are highly compressible (v). Solids do not flow like liquids.
Olympiad Test: Achievers Section-5 - Question 5
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Which statements are true about electric circuits?
(i) A closed circuit allows electric current to flow.
(ii) An open circuit prevents electric current from flowing.
(iii) Insulators conduct electricity.
(iv) Conductors allow electric current to flow easily.
(v) A switch can open or close a circuit.
Detailed Solution for Olympiad Test: Achievers Section-5 - Question 5
A closed circuit allows current to flow (i), an open circuit prevents it (ii), conductors allow current to flow easily (iv), and a switch can open or close a circuit (v). Insulators do not conduct electricity.
Olympiad Test: Achievers Section-5 - Question 6
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Identify the correct statements about the solar system.
(i) The Sun is a star.
(ii) Venus is the hottest planet in the solar system.
(iii) Mars has two moons.
(iv) Jupiter is the smallest planet.
(v) Saturn has the most prominent ring system.
Detailed Solution for Olympiad Test: Achievers Section-5 - Question 6
The Sun is a star (i), Venus is the hottest planet (ii), Mars has two moons (iii), and Saturn has the most prominent ring system (v). Jupiter is the largest, not the smallest, planet.
Olympiad Test: Achievers Section-5 - Question 7
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Which of the following statements about acids and bases are correct?
(i) Acids have a sour taste.
(ii) Bases turn red litmus paper blue.
(iii) Acids turn blue litmus paper red.
(iv) Bases have a pH less than 7.
(v) Neutral solutions have a pH of 7.
Detailed Solution for Olympiad Test: Achievers Section-5 - Question 7
Acids have a sour taste (i), bases turn red litmus paper blue (ii), acids turn blue litmus paper red (iii), and neutral solutions have a pH of 7 (v). Bases have a pH greater than 7, not less.
Olympiad Test: Achievers Section-5 - Question 8
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Select the correct statements about ecosystems.
(i) Producers are also known as autotrophs.
(ii) Consumers depend on producers for food.
(iii) Decomposers break down dead organisms.
(iv) Herbivores are primary consumers.
(v) Carnivores produce their own food.
Detailed Solution for Olympiad Test: Achievers Section-5 - Question 8
Producers are autotrophs (i), consumers depend on producers for food (ii), decomposers break down dead organisms (iii), and herbivores are primary consumers (iv). Carnivores do not produce their own food.
Olympiad Test: Achievers Section-5 - Question 9
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Which statements are true about the properties of light?
(i) Light travels in a straight line.
(ii) Light can be reflected.
(iii) Light can be refracted.
(iv) Light cannot be absorbed.
(v) Light is a form of energy.
Detailed Solution for Olympiad Test: Achievers Section-5 - Question 9
Light travels in a straight line (i), it can be reflected (ii) and refracted (iii), and it is a form of energy (v). Light can also be absorbed, so statement (iv) is incorrect.
Olympiad Test: Achievers Section-5 - Question 10
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Identify the correct statements about magnets.
(i) Like poles repel each other.
(ii) Unlike poles attract each other.
(iii) A freely suspended magnet aligns in the north-south direction.
(iv) Magnets can attract all metals.
(v) Earth itself acts as a giant magnet.
Detailed Solution for Olympiad Test: Achievers Section-5 - Question 10
Like poles repel (i), unlike poles attract (ii), a freely suspended magnet aligns north-south (iii), and Earth acts as a giant magnet (v). Magnets attract only certain metals, not all, so statement (iv) is incorrect.
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