Biodegradable vs Non Biodegradable Waste_Unsolved Paper
Chapter: Our Environment | Topic: Biodegradable vs Non Biodegradable Waste
BIODEGRADABLE VS NON BIODEGRADABLE WASTE_UNSOLVED PAPER
Topic: Biodegradable vs Non Biodegradable Waste
Q1. Which of the following is most likely to be decomposed naturally by microorganisms?
- Plastic bottle
- Vegetable peel
- Aluminium can
- Glass jar
Q2. Which characteristic is generally associated with a non-biodegradable substance?
- It is easily broken down by microorganisms
- It disappears immediately after disposal
- It persists in the environment for a long period
- It always becomes useful manure
Q3. Which group contains only biodegradable materials?
- Fruit peel, paper, cotton cloth
- Plastic bag, glass bottle, metal can
- Thermocol, plastic wrapper, aluminium foil
- Synthetic fibre, plastic bottle, glass
Q4. A large quantity of plastic waste is dumped near a drainage system. Which environmental problem is most likely to occur?
- Faster decomposition of waste
- Blockage of drainage and accumulation of waste
- Increased soil fertility
- Increased oxygen production
Q5. Which practice would be most suitable for reducing the amount of non-biodegradable waste generated by a school?
- Using more single-use plastic items
- Throwing all waste into one bin
- Reusing suitable materials and reducing unnecessary packaging
- Burning plastic waste regularly
Q6. Why can non-biodegradable substances become a serious environmental concern?
- They are always converted into nutrients quickly
- They remain in the environment and can accumulate over time
- They are always consumed by decomposers
- They cannot interact with living organisms
Short questions
Q1. What is meant by a biodegradable substance? Give two examples from everyday life.
Q2. What is a non-biodegradable substance? Why can its accumulation create problems for the environment?
Q3. Differentiate between biodegradable and non-biodegradable waste on the basis of their decomposition by microorganisms.
Q4. During lunch break, students in a school throw fruit peels and plastic wrappers into the same dustbin. Why is separating these wastes useful for proper waste management?
Q5. Why should plastic bags and other long-lasting synthetic materials not be carelessly thrown into open areas?
Q6. An Indian village begins using reusable cloth bags instead of frequently using disposable plastic bags. How could this change help the local environment?
Q1. Explain the major differences between biodegradable and non-biodegradable wastes. Discuss how their different rates of decomposition can affect the environment.
Q2. A residential area produces food scraps, paper, plastic packaging, glass bottles and metal cans every day. Explain how improper disposal of these materials can affect the surroundings. Suggest suitable ways by which residents can manage such waste responsibly.
Q3. Non-biodegradable waste is a growing concern in towns and cities. Explain how excessive accumulation of such waste can affect soil, water bodies and living organisms. Also discuss why reducing waste generation is important along with proper disposal.
Q1. A school collects the following waste during one day:
Using the information given:
(a) Calculate the total quantity of waste collected.
(b) Calculate the combined quantity of plastic and glass waste.
Q2. A household produces 15 kg of waste in one week. Out of this, 9 kg is biodegradable and the remaining waste is non-biodegradable.
(a) Calculate the quantity of non-biodegradable waste.
(b) Calculate the percentage of the household waste that is non-biodegradable.
Q3. During a cleanliness drive, students collect 60 kg of waste from their school surroundings. The waste is separated as follows: