Mon. Jun 24th, 2024

Class VII NCERT MCQs

  1. Depth of the Crust on the Oceanic floors is about

    Options:
    1. 5 km
    2. 20 km
    3. 35 km
    4. 70 km

    Option: A

  2. The main mineral constituents of the continental mass is/are

    Options:
    1. Silica
    2. Alumina
    3. Both A and B
    4. Neither A nor B

    Option: C

  3. The oceanic crust mainly consists of

    Options:
    1. Silica
    2. Magnesium
    3. Both A and B
    4. Neither A nor B

    Option: C

  4. Which of the following layers lies just beneath the Crust

    Options:
    1. The Core
    2. The Mantle
    3. Sial
    4. Sima

    Option: B

  5. The innermost layer of the earth is

    Options:
    1. The Mantle
    2. The Core
    3. The Crust
    4. None of the above

    Option: C

  6. The Core is made up of

    Options:
    1. Sial
    2. Sima
    3. Nife
    4. None of the above

    Option: C

  7. The central core of the earth has

    Options:
    1. High temperature & low pressure
    2. Low temperature & High Pressure
    3. Low temperature & low pressure
    4. High temperature & High pressure

    Option: D

  8. The radius of the earth is

    Options:
    1. 6871 km
    2. 5676 km
    3. 6371 km
    4. 7000 km

    Option: C

  9. What percentage of the earth’s volume is formed by the mantle layer

    Options:
    1. 1
    2. 15
    3. 84
    4. 10

    Option: C

  10. Which of the following type of rocks is formed When the molten magma cools and becomes solid

    Options:
    1. Metamorphic rock
    2. Sedimentary rock
    3. Igneous rock
    4. None of these

    Option: C

  11. Which of the following type of rocks is also called as primary rock

    Options:
    1. Igneous rock
    2. Metamorphic rock
    3. Sedimentary rock
    4. None of these

    Option: A

  12. When the molten magma cools and becomes solid on the earth’s surface, then it is called

    Options:
    1. Intrusive rock
    2. Extrusive rock
    3. Metamorphic rock
    4. Sedimentary rock

    Option: B

  13. When the molten magma cools down deep inside the earth’s crust, then it is known as

    Options:
    1. Extrusive rock
    2. Metamorphic rock
    3. Secondary rock
    4. Intrusive rock

    Option: D

  14. Granite is an example of

    Options:
    1. Extrusive Igneous rock
    2. Intrusive Igneous rock
    3. Metamorphic rock
    4. Secondary rock

    Option: B

  15. Basalt is an example of which type of rocks

    Options:
    1. Extrusive Igneous rock
    2. Intrusive Igneous rock
    3. Metamorphic rock
    4. Secondary rock

    Option: A

  16. Sandstone is an example of which type of rocks

    Options:
    1. Secondary rock
    2. Extrusive Igneous rock
    3. Sedimentary rock
    4. Metamorphic rock

    Option: C

  17. The remains of the dead plants and animals trapped in the layers of rocks are called

    Options:
    1. Humus
    2. Fossils
    3. Remnants
    4. None of these

    Option: B

  18. Which of the following rock types contains fossils of plants, animals and other microorganisms that have ever lived on them

    Options:
    1. Sedimentary rock
    2. Secondary rock
    3. Igneous rock
    4. Metamorphic rock

    Option: A

  19. Gold, petroleum and coal are examples of

    Options:
    1. Minerals
    2. Rocks
    3. Fossils
    4. Remnants

    Option: A

  20. The thinnest layer of the earth is

    Options:
    1. Mantle
    2. Core
    3. Crust
    4. None of these

    Option: C