10 - Science - 07. Biology – Conservation Of Environment

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10 - Science - 07. Biology  Conservation Of Environment - Quiz

Prepared By Mr. S. Ravikumar, B. T. Asst., GHS, Arangaldhurgam, Vellore District.   ; &nbs p; & www. Padasalai. Net




Questions and Answers
  • 1. 

    Which of the following groups contain only bio degradable items?

    • A.

      Grass, flowers and leather

    • B.

      Grass, wood and plastic

    • C.

      Fruit peels, cake and plastic

    • D.

      Cake, wood and grass

    Correct Answer
    A. Grass, flowers and leather
    Explanation
    The group that contains only bio degradable items is grass, flowers, and leather. Grass and flowers are natural materials that can decompose over time, returning to the environment. Leather is also a biodegradable material, as it is made from animal hide. Wood and plastic are not biodegradable, as they take a long time to break down naturally. Fruit peels and cake are biodegradable, but plastic is not. Cake, wood, and grass include both biodegradable and non-biodegradable items.

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  • 2. 

    Which one do you like?Which of the following constitute a food chain?

    • A.

      Grass, wheat and mango

    • B.

      Grass, goat and human

    • C.

      Goat, cow and elephant

    • D.

      Grass, fish and goat

    Correct Answer
    B. Grass, goat and human
    Explanation
    A food chain is a sequence of organisms in which each organism is the source of food for the next organism in the chain. In the given options, the combination of grass, goat, and human constitutes a food chain. Grass is consumed by the goat, and the goat is then consumed by the human. This sequence represents the transfer of energy and nutrients from the primary producer (grass) to the primary consumer (goat) and then to the secondary consumer (human).

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  • 3. 

    Which of the following are environmental friendly practices?

    • A.

      Carrying cloth bags to carry the purchase items during shopping

    • B.

      Switching off light and fans when not in use

    • C.

      use the public transport

    • D.

      All the above

    Correct Answer
    D. All the above
    Explanation
    All of the mentioned practices are considered environmentally friendly. Carrying cloth bags instead of using plastic bags reduces waste and pollution. Switching off lights and fans when not in use conserves energy. Using public transport reduces carbon emissions from individual vehicles. Therefore, all of these practices contribute to a more sustainable and eco-friendly environment.

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  • 4. 

    What is called as ‘black gold’?

    • A.

      Hydrocarbons

    • B.

      Coal

    • C.

      Petroleum

    • D.

      Ether

    Correct Answer
    C. Petroleum
    Explanation
    Petroleum is commonly referred to as 'black gold' due to its high value and importance in the global economy. The term 'black' represents the dark color of crude oil, while 'gold' symbolizes its economic significance and value. Petroleum is a fossil fuel derived from hydrocarbons and is used extensively for various purposes, including fuel for transportation, heating, and electricity generation. Its widespread use and economic impact make it deserving of the nickname 'black gold'.

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  • 5. 

    Odd one out. Plants, grasshopper, frog, tiger, snake

    • A.

      Plants

    • B.

      Grasshopper

    • C.

      Frog

    • D.

      Tiger

    Correct Answer
    D. Tiger
    Explanation
    The odd one out in this group is the tiger because it is the only animal in the list. The other options consist of plants and insects, but the tiger stands out as a different category altogether.

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  • 6. 

    Example for product of green chemistry is _______

    • A.

      Plastic

    • B.

      Paper

    • C.

      Bio-plastics

    • D.

      Halogen lame retardants

    Correct Answer
    A. Plastic
    Explanation
    The product of green chemistry refers to a product that is produced using environmentally friendly processes and materials. While plastic is not typically considered a product of green chemistry due to its negative impact on the environment, the other options listed, such as paper and bio-plastics, are more aligned with the principles of green chemistry. Therefore, plastic is not the correct answer in this case.

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  • 7. 

    _____ green house gas which causes climate change and global warming.

    • A.

      Hydrogen

    • B.

      Oxygen

    • C.

      Nitrogen

    • D.

      Carbon-di-oxide

    Correct Answer
    D. Carbon-di-oxide
    Explanation
    Carbon dioxide is the correct answer because it is a greenhouse gas that contributes to climate change and global warming. When released into the atmosphere through human activities such as burning fossil fuels, carbon dioxide traps heat and prevents it from escaping into space. This leads to an increase in Earth's temperature, causing changes in weather patterns, rising sea levels, and other negative impacts on the environment.

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  • 8. 

    The _____ forms decomposers in the pond ecosystem.

    • A.

      Plants

    • B.

      Bacteria

    • C.

      Frog

    • D.

      Phlytoplanktons

    Correct Answer
    B. Bacteria
    Explanation
    Bacteria forms decomposers in the pond ecosystem. Decomposers play a crucial role in breaking down dead organic matter, such as dead plants and animals, into simpler substances. This process releases nutrients back into the ecosystem, allowing them to be recycled and used by other organisms. Bacteria are particularly important decomposers in aquatic ecosystems like ponds, as they break down organic matter and help maintain the balance of the ecosystem.

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  • 9. 

    ________ chemical is used in seeding clouds.

    • A.

      Potassium iodide

    • B.

      Calcium carbonate

    • C.

      Sulphurdioxide

    • D.

      Ammonium phosphate

    Correct Answer
    A. Potassium iodide
    Explanation
    Potassium iodide is used in seeding clouds. Potassium iodide is a compound that is commonly used in cloud seeding operations. Cloud seeding is the process of dispersing substances into the air to encourage cloud formation or precipitation. Potassium iodide is often used as a cloud seeding agent because it has hygroscopic properties, meaning it attracts and absorbs moisture from the surrounding air. This can help to increase the amount of water vapor in the air, which can then lead to the formation of clouds and potentially precipitation.

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  • 10. 

    Example for fossil fuel is ________

    • A.

      Copper

    • B.

      Iron

    • C.

      Magnesium

    • D.

      Coal

    Correct Answer
    D. Coal
    Explanation
    Coal is the correct answer because it is a type of fossil fuel. Fossil fuels are formed from the remains of ancient plants and animals that have been buried and subjected to heat and pressure over millions of years. Coal is formed from the remains of plants that lived and died millions of years ago, and it is one of the most widely used fossil fuels for generating electricity and heat. Copper, iron, and magnesium are not fossil fuels but rather elements or minerals used for various purposes.

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