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Questions and Answers
The speedometer of a car measures:
The linear momentum of an object is 250 g cm/s. If the velocity of the object is 5 m/s, what is the mass of the object?
Which of the following phenomena would increase on raising the temperature?
Which of the following statements concerning the reaction 2P + Q → P₂Q is correct?
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Sieve tubes and companion cells are present in:
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The connective tissue which provides elasticity to the skin is:
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Cell was discovered by:
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What information does the slope of a velocity vs time graph provide?
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Which car is the slowest based on distance vs time graphs?
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What does segment OA represent on a heating graph?
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Why does temperature remain constant at boiling point?
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Which solid dissolves best in water at 30 ºC?
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Which solid is most soluble in alcohol?
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What are bone cells called?
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Study Notes
General Instructions for the Test
- Total duration: 1 hour and 30 minutes, with no writing allowed in the first 15 minutes.
- Aim to complete all eleven questions across four sections:
- Section A: Competency Based Questions (1 mark each)
- Section B: Objective Based Questions (1 mark each)
- Section C: Short Answer Questions (2 marks each)
- Section D: Long Answer Questions (3 marks each)
Section A: Multiple Choice Questions
- Speedometer measures instantaneous speed.
- Linear momentum = 250 g cm/s; velocity = 5 m/s; mass of the object = 0.5 g.
- Increases with temperature: evaporation, diffusion, and expansion of gases.
- Reaction 2P + Q → P₂Q characteristics:
- (ii) Product has fixed composition.
- Sieve tubes and companion cells are components of phloem.
- Elastic connective tissue of skin is areolar tissue.
- Cell discovery credited to Robert Hooke.
Section B: Case-Based Questions
- Analysis of cars A, B, C, and D through distance vs. time graphs:
- Slope of velocity vs. time graph indicates acceleration.
- Identification of the slowest car through graph analysis.
- Boiling process in liquids explained:
- Segment OA symbolizes temperature rise until boiling point.
- Constant temperature at boiling point due to phase change energy absorption.
- Solubility table reveals:
- Sugar dissolves best in water (210 g at 30 ºC).
- Most soluble solid in alcohol is iodine (24 g).
- Bone characteristics:
- Composed of hard, porous tissue providing structural support.
- Contains ossein protein, calcium, and magnesium phosphates.
- Bone cells within the matrix are called osteocytes.
Section C: Additional Concepts
- Importance of cell membranes in maintaining separation from the external environment in complex cells.
- Understanding of cell types and their functions relative to the skeletal system and body support.
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Description
Prepare for the upcoming science test with this detailed guide. The quiz consists of various sections designed to assess your understanding of key concepts, including multiple choice questions, case-based analysis, and both short and long answer questions. Make sure to manage your time effectively across all eleven questions.
