6th Science - 2nd Mid Term Exam 2024 - Original Question Paper | Ranipet District | English Medium

6th Standard Science Second Mid Term Test 2024 - Solutions

6th Standard Science - Second Mid Term Test 2024
Question Paper with Solutions

Standard: VI Subject: SCIENCE Marks: 50
6th Standard Science Question Paper 6th Standard Science Question Paper 6th Standard Science Question Paper

I. Choose the appropriate answer (5x1=5)

  1. The unit of Heat is _____.
    b) joule
  2. Electricity is produced in _____.
    b) power station
  3. Formation of curd from milk is a/an _____ change.
    c) irreversible
  4. The unit of measurement used for expressing dimension (size) of cell is _____.
    c) micrometer
  5. The 'Control centre' of the eukaryotic cell is _____.
    b) Nucleus

II. Fill in the blanks (5x1=5)

  1. Solids expand on heating.
  2. The combination of two or more cells is called a battery.
  3. Boiling of egg results in chemical change.
  4. I am like a policeman, who am I Cell membrane.
  5. The term 'Cell' was coined by Robert Hooke.

III. Match the following (5x1=5)

Question Correct Match
11. Control center Nucleus
12. Food producer Chloroplast
13. Gate of the nucleus Nuclear membrane
14. Gate of the cell Cell membrane
15. Energy producer Mitochondria

IV. True or False. If false, give the correct answer (5x1=5)

  1. Heat is a kind of energy that flows from a hot body to a cold body.
    True.
  2. The unit of heat and temperature are the same.
    False.
    Correct answer: The unit of heat is Joule, and the unit of temperature is Kelvin (or Celsius).
  3. The Switch is used to close or open an electric circuit.
    True.
  4. Digestion of food is a physical change.
    False.
    Correct answer: Digestion of food is a chemical change.
  5. Nerve cell is the longest cell.
    True.

V. Analogy (5x1=5)

  1. Ice Cube : 0°c :: Boiling water : 100°c
  2. Copper : Conductor :: Plastic : Insulator
  3. Photosynthesis : Natural change :: Burning of Coal : Human made change.
  4. Burning of matchstick : Fast change :: Rotation of earth : Slow change.
  5. Food producer : Chloroplast :: Power house : Mitochondria

VI. Give very short answer (Any 5) (5x2=10)

  1. Make a list of electrical equipments at home which we get heat from?

    Some electrical equipments at home that produce heat are:
    • Electric iron box
    • Water heater (Geyser)
    • Electric kettle
    • Electric stove

  2. Distinguish between heat and temperature (Any 2 points).

    Heat Temperature
    It is the total kinetic energy of the constituent particles of an object. It is the measure of the average kinetic energy of the particles.
    Its SI unit is Joule (J). Its SI unit is Kelvin (K).

  3. Draw the circuit diagram for series circuit.

    A series circuit consists of a power source (battery), a switch, and loads (like bulbs) connected one after another in a single loop. Series Circuit Diagram

  4. What kind of change is associated with decaying of a plant?

    The decaying of a plant is a chemical change. It is also a slow and irreversible change.

  5. What is a solution?

    A solution is a homogeneous mixture of two or more substances. The substance which is dissolved is called the solute, and the substance in which the solute is dissolved is called the solvent.

  6. What are the organelles found only in plant cell?

    The organelles found only in a plant cell are:
    • Cell wall
    • Chloroplasts
    • Large central vacuole

  7. Give three examples for eukaryotic cell.

    Three examples of eukaryotic cells are:
    • Plant cells
    • Animal cells
    • Fungi cells

VII. Answer in Detail (Any 3) (3x5=15)

  1. Tabulate the different components of an electric circuit and their respective symbols.

    Symbols of Electric Components

  2. Give one example for each case that happens around you.

    • a) Slow and fast change
      Slow: Rusting of iron.
      Fast: Burning of a matchstick.
    • b) Reversible and irreversible change
      Reversible: Melting of ice.
      Irreversible: Cooking of rice.
    • c) Physical and Chemical change
      Physical: Tearing a piece of paper.
      Chemical: Digestion of food.
    • d) Natural and Manmade change
      Natural: A flower blooming.
      Man-made: Construction of a building.
    • e) Desirable and undesirable change
      Desirable: Ripening of fruits.
      Undesirable: Spoiling of food.

  3. Tabulate any five cell organelles and their function.

    Cell Organelle Function
    Nucleus Controls all the activities of the cell (Control center).
    Mitochondria Produces and stores energy (Powerhouse of the cell).
    Chloroplast Performs photosynthesis to produce food for the plant (Food producer).
    Cell Wall Provides shape, rigidity, and protection to the plant cell.
    Cell Membrane Acts as a gate, controlling the entry and exit of substances.

  4. Draw a plant cell and mark any 5 parts.

    Diagram of a Plant Cell

    The 5 main parts are:

    1. Cell Wall: The outermost protective layer.
    2. Cell Membrane: The layer inside the cell wall.
    3. Nucleus: The control center, usually in the center.
    4. Chloroplast: Green-colored organelles responsible for photosynthesis.
    5. Vacuole: A large, central sac that stores water and other substances.
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