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Mix Test - 7

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Weekly Quiz Competition
  • Question 1
    1 / -0

    What is meant by the term “Goldilocks zone”?

    Solution

    The term “Goldilocks zone” is a habitable zone around the star. The Goldilocks zone is a livable zone where the temperature is neither too hot nor too cold.

    Hence, the correct option is (B).

  • Question 2
    1 / -0

    The sources of irrigation are:

    Solution

    The sources of irrigation are wells, dams and canals.

    The various sources of water for irrigation are wells, ponds, lakes, canals, tube-wells and even dams. Irrigation offers moisture required for growth and development, germination and other related functions.

    Hence, the correct option is (D).

  • Question 3
    1 / -0

    How long does it take to form fossil fuel?

    Solution

    Fossil fuels take millions of years to form.

    The principal origin of fossil fuels is the anaerobic decomposition of buried dead organisms, containing organic molecules created in ancient photosynthesis. The transitions from these source materials to high-carbon fossil fuels typically require a geological process of millions of years, sometimes more than 650 million years. 

    Hence, the correct option is (A).

  • Question 4
    1 / -0

    Where is Gautam Buddha Bird Sanctuary located?

    Solution

    Gautam Budha Wildlife Sanctuary (also spelt Gautam Buddha) is a wildlife sanctuary located in the Gaya district of Bihar state and Koderma district of Jharkhand state in east-central India.

    The refuge was established in 1976 and covers an area of 259 km2. Prior to becoming a wildlife refuge, the area was a private hunting reserve. The refuge covers portions of the Lower Gangetic Plains moist deciduous forest and Chota Nagpur dry deciduous forest ecoregions.

    Hence, the correct option is (B).

  • Question 5
    1 / -0

    The main cause of water pollution is:

    Solution

    The main cause of water pollution is industrial effluents.

    The main causes of water pollution are municipal wastewater, industrial wastewater, surface run-off, and oil spills. Hot Industrial effluents when directly discharged into water bodies cause both thermal and chemical pollution. Industrial waste water contains a variety of organic and inorganic residues, which are deadly pollutants.

    Hence, the correct option is (B).

  • Question 6
    1 / -0

    The power of an earthquake is expressed on scale called:

    Solution

    The power of an earthquake is expressed on scale called Richter scale.

    The Richter scale measures the largest wiggle (amplitude) on the recording, but other magnitude scales measure different parts of the earthquake. The USGS currently reports earthquake magnitudes using the Moment Magnitude scale, though many other magnitudes are calculated for research and comparison purposes.

    Hence, the correct option is (B).

  • Question 7
    1 / -0

    Which of the following cell organelles stores energy in the form of ATP molecules & is also responsible for cellular respiration.?

    Solution

    Mitochondria storage energy in the form of ATP molecules & also responsible for cellular respiration. 

    Cell Organelles define as membrane-bound cellular components. These cell organelles are present within the cells and are independent in their functions. They coordinate with their structures & function effectively for the normal functioning of the cell. 

    Hence, the correct option is (C).

  • Question 8
    1 / -0

    Consider the following statements  

    1. The focal length of the eyepiece is larger than the focal length of the objective.

    2. The focal length of the eyepiece is smaller than the focal length of the objective.

    3. The aperture of the eyepiece lens is larger than the objective lens.

    Which of the following statements is/are INCORRECT about a compound microscope?

    Solution

    The focal length of the eyepiece lens is larger than the focal length of the objective lens. So statement 1 is correct and statement 2 is incorrect.

    The aperture of the eyepiece lens is larger than the objective lens. So statement 3 is correct.

    Hence, the correct option is (B).

  • Question 9
    1 / -0

    Which is the hottest planet of our solar system?

    Solution

    Venus is the hottest planet in our solar system. Planetary surface temperatures tend to get colder the farther a planet is from the Sun. Venus is the exception, as its proximity to the Sun and dense atmosphere make it our solar system's hottest planet.

    Hence, the correct option is (A).

  • Question 10
    1 / -0

    The d block elements are:

    Solution

    The position of d-block elements is in between s-block and p-block elements in the periodic table. These d-block elements are called transition elements because they exhibit transitional behaviour between s-block and p-block elements.

    Transition metals are d-block elements with valence shell configuration ns2 (n-1) d(1-10).

    The transition metals and their ions easily coordinate to a number of negative ions or neutral molecules having lone pairs of electrons to form complexes.

    The d-block elements are all metals and most have one or more chemically active d-orbital electrons.

     There is a relatively small difference in the energy of the different d-orbital electrons, the number of electrons participating in chemical bonding can vary.

    So, the d block elements are all metals.

    Hence, the correct option is (A).

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