Samacheer Kalvi Class 5 Science Solutions Term 1 Chapter 4 Science In Everyday Life

Evaluation

I. Choose The Correct Answer:

 

Question 1. Blue appearance of the sky is due to ______ of light.
(a) reflection
(b) refraction
(c) interference
(d) scattering
Answer: (d) scattering
In simple words: The blue color of the sky is caused by a process called scattering, where sunlight hits tiny particles and gases in the air and spreads out in all directions. Blue light scatters more than other colors, making the sky look blue.

🎯 Exam Tip: Remember that different colors of light scatter differently. Blue light scatters more because of its shorter wavelength compared to red light, which scatters less.

 

Question 2. Who is known as Missile Man of India?
(a) Sir CM. Raman
(b) Dr. A.P.J. Abdul Kalam
(c) Dr. M.S. Swaminathan
(d) Ramanujan
Answer: (b) Dr. A.P.J. Abdul Kalam
In simple words: Dr. A.P.J. Abdul Kalam is widely known as the "Missile Man of India" because of his important role in developing missiles and nuclear weapons programs. He also served as the 11th President of India, inspiring many with his scientific mind and dedication.

🎯 Exam Tip: When identifying famous personalities, link their title or achievement directly to their name for a complete answer.

 

Question 3. An example for reversible change is ______.
(a) melting of ice
(b) burst of balloon
(c) burning paper
(d) change of milk into curd
Answer: (a) Melting of ice
In simple words: When ice melts, it turns into water, but you can freeze the water back into ice. This is a reversible change because the substance can go back to its original form.

🎯 Exam Tip: To check if a change is reversible, think if you can easily get the original substance back after the change has happened.

 

Question 4. Chemical reactions are example for ______.
(a) reversible change
(b) irreversible change
(c) both of them
(d) none of them
Answer: (b) irreversible change
In simple words: Chemical reactions usually cause changes that cannot be undone easily. Once new substances are formed, it is hard to turn them back into the original ones.

🎯 Exam Tip: Remember that chemical changes often result in new substances being formed, making them typically irreversible.

 

Question 5. Which of the following is not an organic waste?
(a) Flowers
(b) Vegetables
(c) Fruits
(d) Battery
Answer: (d) Battery
In simple words: Organic waste comes from living things, like plants and food. A battery is made from chemicals and metals, so it is not organic.

🎯 Exam Tip: Classify waste based on its origin: organic waste is natural and biodegradable, while inorganic waste is man-made and often non-biodegradable.

II. Fill In The Blanks:

 

Question 1. The book Wings of Fire was written by ______.
Answer: Dr. A.P.J. Abdul Kalam
In simple words: "Wings of Fire" is a famous book written by Dr. A.P.J. Abdul Kalam, sharing his life story and how he became a great scientist and President.

🎯 Exam Tip: Recall prominent authors and their famous works, especially those related to Indian history or science.

 

Question 2. A stretched rubber band comes back to normal shape. It is an example for ______.
Answer: Reversible changes
In simple words: When you stretch a rubber band, it changes shape, but it can easily go back to its original shape when you let it go. This means the change is reversible.

🎯 Exam Tip: For changes, consider if the original state can be recovered; if so, it's reversible.

 

Question 3. Most of the physical changes are ______ changes.
Answer: reversible
In simple words: Most physical changes, like melting ice or tearing paper, can be reversed or do not create new substances. The substance itself stays the same, even if its form changes.

🎯 Exam Tip: Physical changes alter a substance's appearance but not its chemical composition; hence, they are usually reversible.

 

Question 4. Newspaper is a ______ waste.
Answer: Recyclable waste
In simple words: Newspaper is a type of waste that can be collected and processed to make new paper products instead of being thrown away. This helps save trees and reduces trash.

🎯 Exam Tip: Think about whether a waste item can be reprocessed into something new to determine if it's recyclable.

 

Question 5. Wastes from house and apartments are called ______ waste.
Answer: Household
In simple words: The trash and unwanted items that we throw away from our homes every day are called household waste. This includes things like food scraps, plastic bottles, and old papers.

🎯 Exam Tip: Common waste categories are household, industrial, and agricultural; understand their sources.

III. Match The Following:

 

Question. Match the following:
1. Bud of flower
2. Reversible change
3. India 2020
4. Paper
5. Vegetables
a) Dr. A.P.J. Abdul Kalam
b) Recyclable waste
c) Organic waste
d) Melting of ice
e) Irreversible change
Answer:
1. e) Irreversible change
2. d) Melting of ice
3. a) Dr. A.P.J. Abdul Kalam
4. b) Recyclable waste
5. c) Organic waste
In simple words: We connect each item on the left with its correct description or category on the right. For example, a bud opening into a flower is a change that cannot be undone, making it irreversible.

🎯 Exam Tip: Carefully read each item and its options. Eliminate incorrect pairings first, then match the remaining ones.

IV. Circle The Odd One:

 

Question 1.
(a) Melting
(b) Freezing
(c) Boiling
(d) Cooking
Answer: (d) Cooking
In simple words: Melting, freezing, and boiling are all physical changes related to states of matter. Cooking involves chemical changes, where new substances are formed, making it different from the others.

🎯 Exam Tip: Group the options by their fundamental nature: physical processes versus chemical processes.

 

Question 2.
(a) Boiling
(b) Burning
(c) Cooking
(d) Rusting of Iron
Answer: (a) Boiling
In simple words: Burning, cooking, and rusting are all examples of chemical changes where new substances are formed. Boiling is a physical change, as water just changes its state from liquid to gas without becoming a new substance.

🎯 Exam Tip: Distinguish between physical changes (which alter form but not composition) and chemical changes (which form new substances).

 

Question 3.
(a) Vegetables
(b) Flowers
(c) Fruits
(d) Chemicals
Answer: (d) Chemicals
In simple words: Vegetables, flowers, and fruits are all organic materials that come from plants. Chemicals are a broader category and can be natural or man-made, and are not necessarily organic waste.

🎯 Exam Tip: Identify the common category for most items and find the one that doesn't fit that category.

 

Question 4.
(a) Paper
(b) Glass
(c) Metals
(d) Paints
Answer: (d) Paints
In simple words: Paper, glass, and metals are all common recyclable materials that can be processed and reused. Paints, especially many types of household paints, are often considered hazardous waste and are harder to recycle or dispose of safely.

🎯 Exam Tip: Think about which items can be easily recycled versus those that require special disposal or are considered hazardous.

V. Answer In Brief:

 

Question 1. Sky appears blue in colour. Why?
Answer: The sky appears blue because of how sunlight interacts with the Earth's atmosphere. Sunlight is made up of many different colors, like red, orange, yellow, green, blue, indigo, and violet (VIBGYOR). When sunlight enters our atmosphere, tiny gas particles and dust scatter the light. Blue and violet light scatter more than other colors because they have shorter wavelengths. Our eyes are more sensitive to blue light, so we see the sky as blue. This scattering effect is why the sky changes colors during sunrise and sunset, when light travels through more atmosphere.
In simple words: The sky looks blue because tiny particles in the air scatter blue light from the sun more than other colors. Our eyes see this scattered blue light.

🎯 Exam Tip: The key concept here is "scattering of light," specifically Rayleigh scattering, which explains why shorter wavelengths (like blue) scatter more easily.

 

Question 2. What is reversible change?
Answer: A reversible change is a type of change where a substance can return to its original state or form after the change has occurred. No new substance is formed in a reversible change. For example, when ice melts into water, the water can be frozen back into ice, showing that it is a reversible physical change.
In simple words: A reversible change is when something can go back to how it was before.

🎯 Exam Tip: Focus on whether the original material can be recovered without significant effort or new chemical processes.

 

Question 3. Differentiate reversible and irreversible changes.
Answer:

In simple words: Reversible changes can go back to how they started, like melting ice. Irreversible changes cannot be undone, like burning paper.

🎯 Exam Tip: When differentiating, clearly state whether new substances are formed and if the process can be reversed to the original state for each type of change.

 

Question 4. What are the different types of waste?
Answer: Wastes are usually divided into two main types: household wastes and wastes from school. Household waste includes all the garbage and unwanted items from homes, while school waste includes things like paper, food scraps, and other items generated in educational institutions. Other classifications include organic waste, toxic waste, recyclable waste, solid waste, and e-waste, depending on their source and properties.
In simple words: Wastes are mainly of two types: household waste from homes and school waste from schools.

🎯 Exam Tip: When listing types of waste, provide clear examples for each category to illustrate your understanding.

 

Question 5. Write a note on e-waste.
Answer: E-waste refers to electronic waste, which includes discarded electronic devices and their parts. This type of waste comes from computer parts, electronic materials, cell phones, and CFL bulbs. Every year, around 40 million tons of electronic waste is produced worldwide. E-waste is a major concern because it makes up about 70% of all toxic waste. It contains hundreds of harmful substances, many of which are poisonous, making proper disposal very important for environmental safety.
In simple words: E-waste is old electronic stuff like computers and phones that we throw away. It is very harmful because it has many toxic chemicals inside.

🎯 Exam Tip: Highlight the source, quantity, and toxic nature of e-waste in your answer to show its significance.

 

Question 6. Name the scientists from Tamil Nadu.
Answer: Some notable scientists from Tamil Nadu include:

• Dr. M.S. Swaminathan, known for his work in agriculture and the Green Revolution.
• Venkataraman Radhakrishnan, a renowned space scientist.
• Sir C.V. Raman, who won the Nobel Prize for his work on light scattering.
• Srinivasa Ramanujan, a brilliant mathematician.
• Dr. A.P.J. Abdul Kalam, a distinguished aerospace scientist and former President of India.

In simple words: Famous scientists from Tamil Nadu include Dr. M.S. Swaminathan, Venkataraman Radhakrishnan, Sir C.V. Raman, Srinivasa Ramanujan, and Dr. A.P.J. Abdul Kalam.

🎯 Exam Tip: When listing names, try to include a brief, key achievement for each individual to demonstrate knowledge.

VI. Answer In Detail:

 

Question 1. Write about different household wastes.
Answer: Household wastes are the unwanted materials we throw away from our homes every day. These can be categorized into several types:
a) Organic waste: This includes kitchen waste, vegetables, flowers, leaves, and fruits. These wastes are biodegradable and can be composted.
b) Toxic wastes: These are hazardous items like old medicines, paints, chemicals, bulbs, spray cans, fertilizers, pesticides, containers, batteries, and shoe polish. They need special disposal because they can harm the environment.
c) Recyclable wastes: These are materials that can be processed to make new products, such as paper, glass, and plastics. Recycling helps save natural resources.
d) Solid wastes: This category includes cloths soiled with blood and other body fluids, which require careful handling.
e) E-wastes: These are discarded electronic items like computer parts, electronic materials, cell phone parts, and CFL bulbs. They contain toxic chemicals and must be disposed of responsibly. Managing these different types of waste correctly is essential for a clean and healthy environment.
In simple words: Household waste comes in different types, like organic waste (food scraps), toxic waste (batteries, paints), recyclable waste (paper, glass), solid waste (soiled clothes), and e-waste (old electronics).

🎯 Exam Tip: List each type of household waste with specific examples to show comprehensive understanding of waste classification.

 

Question 2. Explain the need for waste disposal.
Answer: Proper waste management and disposal are crucial for several important reasons:
a) To control pollution: Effective waste disposal helps prevent various types of pollution, including water pollution (when waste leaks into water bodies), air pollution (from burning waste), and soil pollution (when waste contaminates land). By managing waste, we can protect our natural surroundings.
b) To conserve natural resources: When we properly dispose of waste, especially by recycling, we reduce the need to use new raw materials. This helps conserve valuable environmental resources like forests (for paper), minerals (for metals), and water.
c) To control the spread of diseases: Uncollected and improperly disposed waste can attract pests like flies and rodents, which can carry and spread infectious diseases. Proper disposal helps to maintain public hygiene and prevent outbreaks of illness. Responsible waste handling makes our communities healthier and safer.
In simple words: We need to dispose of waste properly to stop pollution, save natural resources, and prevent diseases from spreading.

🎯 Exam Tip: When explaining the need for waste disposal, focus on the interconnected benefits to the environment and public health.

 

Question 3. How can you reduce waste in your school environment?
Answer: We can reduce waste in a school environment through several practices:

• Use reusable and recyclable bags and containers instead of single-use plastics to carry lunch or supplies.
• Avoid using one-time use items and instead choose items that can be used permanently, like refillable pens or water bottles.
• Segregate wastes into biodegradable (like food scraps) and non-biodegradable (like plastics) items. Then, hand them over to the municipal or corporation people who collect them, ensuring they are properly managed.
• Do not throw away wastes everywhere; always put them in dustbins and dispose of them properly at designated collection points.
• Don't waste food. Any leftover food in schools can be collected and used to feed cattle, reducing food waste.
• Organic wastes, such as fruit peels and leftover food, can be converted into manures (compost), which can then be used to fertilize school gardens. This helps turn waste into a useful resource.

In simple words: To reduce school waste, we can use reusable things, sort our trash, put waste in bins, avoid wasting food, and turn organic waste into compost.

🎯 Exam Tip: Provide actionable and specific examples of waste reduction methods that are applicable in a school setting, like the 3 Rs (Reduce, Reuse, Recycle).

Samacheer Kalvi 5th Science Guide Science In Everyday Life Additional Questions And Answers

I. Choose The Correct Answer:

 

Question 1. Which among the following is the toxic waste?
(a) Vegetable waste
(b) Old medicines
(c) Kitchen waste
(d) Leaves waste
Answer: (b) Old medicines
In simple words: Old medicines are toxic waste because they contain chemicals that can harm living things or the environment if not disposed of properly.

🎯 Exam Tip: Recognize toxic waste as anything containing harmful chemicals or substances that need special disposal, contrasting it with common organic waste.

 

Question 2. Which is reversible change?
(a) Raw egg to boiled egg
(b) Ice cube to water
(c) Burning paper
(d) All the options
Answer: (b) Ice cube to water
In simple words: An ice cube melting into water is a reversible change because the water can be frozen back into an ice cube. The other options are irreversible.

🎯 Exam Tip: Reversible changes allow the original substance to be recovered; boiling an egg or burning paper creates new substances.

 

Question 3. Who is referred as the people's president?
(a) Sir C.V.Raman
(b) Ram Nath Kovoind
(c) A.P.J.Abdul Kalam
(d) None of the options
Answer: (c) A.P.J.Abdul Kalam
In simple words: Dr. A.P.J. Abdul Kalam is often called the "People's President" because he was widely loved and respected by ordinary citizens during his time as President.

🎯 Exam Tip: Connect well-known epithets or titles to the correct historical figure to show cultural awareness.

 

Question 4. Sir C.V.Raman won the Nobel prize for his work in ______.
(a) Green revolution
(b) Composite numbers
(c) Structure of ribosome
(d) Scattering of light
Answer: (d) Scattering of light
In simple words: Sir C.V. Raman received the Nobel Prize because he discovered how light changes its wavelength when it hits different materials, a process known as the Raman Effect or scattering of light.

🎯 Exam Tip: Associate key scientific figures with their specific discoveries or contributions that led to major awards like the Nobel Prize.

 

Question 5. National Science Day is celebrated on ______.
(a) 27th February
(b) 28th February
(c) 28th March
(d) 27th March
Answer: (b) 28th February
In simple words: National Science Day is celebrated every year on February 28th in India to remember the discovery of the Raman Effect by Sir C.V. Raman.

🎯 Exam Tip: Know important national days and their significance, especially those related to science or national heroes.

II. Fill In The Blanks:

 

Question 1. Water changes into ice on cooling is an example of ______.
Answer: Reversible change
In simple words: When water turns into ice by cooling, it is a reversible change because the ice can melt back into water.

🎯 Exam Tip: Changes in state like melting or freezing are always examples of reversible changes.

 

Question 2. ______ change is the ______ of a substance from one form to another.
Answer: Transition
In simple words: A transition change describes when a substance moves from one form to another, like a caterpillar changing into a butterfly.

🎯 Exam Tip: Remember that 'transition' refers to the process of changing from one state or form to another.

 

Question 3. A.P.J Abdul Kalam was an ______ Scientist.
Answer: Aeronautical Scientist
In simple words: Dr. A.P.J. Abdul Kalam was a scientist who worked on aircraft and space technology, which is what "aeronautical scientist" means.

🎯 Exam Tip: Identify the specific field of work for prominent scientists, not just their general profession.

 

Question 4. Changes which cannot be reversed are called ______.
Answer: Irreversible changes
In simple words: If you cannot turn something back to its original state after it has changed, then it is an irreversible change.

🎯 Exam Tip: The key characteristic of irreversible changes is the inability to return to the original state.

 

Question 5. Most of the physical changes are ______ change.
Answer: Reversible
In simple words: Many physical changes, like crushing a can, can be reversed or don't make completely new things, so they are mostly reversible.

🎯 Exam Tip: Remember that physical changes primarily affect appearance or state, usually allowing for reversal.

 

Question 6. Dissolving sugar in water is a ______ change.
Answer: Reversible
In simple words: When sugar dissolves in water, you can evaporate the water to get the sugar back, which shows it is a reversible change.

🎯 Exam Tip: Think about whether you can separate the mixed substances to determine if the change is reversible.

 

Question 7. Paper, LPG, CNG petrol etc, are ______ substances.
Answer: Inflammable
In simple words: Paper, LPG, CNG, and petrol are all substances that catch fire easily and burn quickly, so they are called inflammable.

🎯 Exam Tip: Inflammable substances are those that ignite readily and burn, posing fire hazards.

 

Question 8. Water on ______ changes to ice and on ______ comes back to water.
Answer: cooling, heating
In simple words: Water turns into ice when it gets cold (cooling), and ice turns back into water when it gets warm (heating).

🎯 Exam Tip: Understand the role of temperature (cooling and heating) in changing the states of matter, such as water to ice and vice-versa.

III. Pick Out The Odd One Out:

 

Question 1.
(a) Kitchen waste
(b) Vegetables
(c) Flowers
(d) Fertilizers
Answer: (d) Fertilizers
In simple words: Kitchen waste, vegetables, and flowers are all types of organic waste from living things. Fertilizers are chemicals used to help plants grow and are not organic waste.

🎯 Exam Tip: Identify the common characteristic (e.g., organic origin) among most items and then find the one that doesn't share that trait.

 

Question 2.
(a) Piece of bread
(b) Polythene bag
(c) Broken glass
(d) Blades.
Answer: (a) Piece of bread
In simple words: A piece of bread is organic and biodegradable. Polythene bags, broken glass, and blades are inorganic, non-biodegradable items.

🎯 Exam Tip: Differentiate items based on whether they are organic and biodegradable or inorganic and non-biodegradable.

 

Question 3.
(a) Reduce
(b) Reuse
(c) Recycle
(d) Disposal
Answer: (d) Disposal
In simple words: Reduce, reuse, and recycle are the three R's of waste management, aiming to lessen waste. Disposal means just throwing it away, which is the end step, not a reduction method.

🎯 Exam Tip: The 3 Rs (Reduce, Reuse, Recycle) are proactive waste management strategies, while disposal is the final action for waste that cannot be managed otherwise.

 

Question 4.
(a) Milk to curd
(b) Raw egg to boiled egg
(c) Ice cube to water
(d) Grain to flour.
Answer: (c) Ice cube to water
In simple words: When an ice cube melts into water, it can be frozen back into ice, making it a reversible change. All other options are irreversible changes, as the original item cannot be fully recovered.

🎯 Exam Tip: To identify the odd one, determine if each change is reversible or irreversible. The one that differs is the answer.

IV. Match The Following:

 

Question. Match the following:
1. Sir C.V.Raman
2. National Science Day
3. Srinivasa Ramanujan
4. A.P.J. Abdul Kalam
a) 28th of February
b) Blue colour of the sky
c) Missile man of India
d) Mathematics - composite numbers
Answer:
1. b) Blue colour of the sky
2. a) 28th of February
3. d) Mathematics - composite numbers
4. c) Missile man of India
In simple words: We are matching important people and events with their related facts. Sir C.V. Raman's work explains why the sky is blue. National Science Day celebrates science on February 28th. Ramanujan was a brilliant mathematician. A.P.J. Abdul Kalam is called the Missile Man.

🎯 Exam Tip: For matching questions, it is helpful to recall the main achievements or associations of each personality or event.

V. Say True Or False:

 

Question 1. Evaporation of water is a reversible change.
Answer: True
In simple words: Water turning into vapor (evaporation) can be reversed by cooling the vapor back into liquid water (condensation), so it is a reversible change.

🎯 Exam Tip: Evaporation and condensation are opposite processes, confirming that the change in state of water is reversible.

 

Question 2. Burning of the paper is an irreversible change.
Answer: True
In simple words: When paper burns, it turns into ash and smoke, and you cannot turn the ash back into paper. So, it is an irreversible change.

🎯 Exam Tip: Burning is a chemical change that forms new substances, making it always irreversible.

 

Question 3. Rusting of iron is a reversible change.
Answer: False
In simple words: Rusting is a chemical reaction where iron changes into a new substance (rust), and this process cannot be easily undone, so it is an irreversible change.

🎯 Exam Tip: Chemical reactions like rusting are typically irreversible because the original substance's chemical composition is altered permanently.

 

Question 4. Sky appears blue at sunrise.
Answer: False
In simple words: At sunrise, the sun's light travels through more of Earth's atmosphere, scattering blue light away and letting red and orange light pass through more directly. This makes the sky appear red, orange, or yellow, not blue.

🎯 Exam Tip: Recall that the angle of sunlight and the amount of atmosphere it passes through influence the sky's color at different times of the day.

 

VI. Answer In Brief:

 

Question 1. Why does the sky appear blue?
Answer: The sky looks blue because of how sunlight interacts with the air. Sunlight is made of many colors, like a rainbow (violet, indigo, blue, green, yellow, orange, and red). When sunlight hits the gases and tiny bits in our atmosphere, the blue light gets spread out more than other colors. This scattering of blue light makes the sky appear blue to our eyes. Blue light has shorter wavelengths, which causes it to scatter more easily than other colors with longer wavelengths.
In simple words: Blue light from the sun spreads out a lot in the air. This makes the sky look blue.

🎯 Exam Tip: To score full marks, mention both the scattering of sunlight by particles in the atmosphere and the preferential scattering of blue light due to its shorter wavelength.

 

Question 2. Name the two types of changes.
Answer: Changes are generally sorted into two main kinds. They are:
1. Reversible changes
2. Irreversible changes
Understanding these types helps us predict if something can go back to how it was.
In simple words: Changes are either reversible, meaning they can go back, or irreversible, meaning they cannot.

🎯 Exam Tip: When asked to name types, list them clearly with numbers or bullet points for better presentation.

 

Question 3. What are reversible changes?
Answer: Reversible changes are those where a substance can go back to its original state after a change. For example, ice melting into water is a reversible change, as water can freeze back into ice.
In simple words: Reversible changes are changes that can be undone, so things go back to how they were before.

🎯 Exam Tip: Always provide a simple, clear example when defining a concept like reversible change to show understanding.

 

Question 4. What are irreversible changes?
Answer: Irreversible changes are permanent changes where a substance cannot return to its initial form. Actions such as heating, burning, mixing things together, or grinding them into a powder often lead to these kinds of lasting changes. For example, burning paper is an irreversible change.
In simple words: Irreversible changes are changes that cannot be undone. Once they happen, there is no going back to the original state.

🎯 Exam Tip: Remember that the creation of new substances or a significant alteration of properties often indicates an irreversible change.

 

Question 5. What is meant by waste?
Answer: Waste refers to any material or substance that is thrown away after its main purpose is served. These are materials that are no longer useful, might be broken, or are simply not wanted anymore. Managing waste properly is important for a clean environment.
In simple words: Waste is anything we throw away because we do not need it or it is broken.

🎯 Exam Tip: Clearly define waste by focusing on its lack of usefulness after its initial purpose and its undesirable nature.

 

Question 6. What are the 3R's used to save the environment?
Answer: The 3R's are important steps we can take to help protect our environment. These three R's stand for Reduce, Recycle, and Reuse. Following these practices helps lessen the amount of garbage we create and saves natural resources.
In simple words: The 3R's are Reduce, Recycle, and Reuse, which are ways to help the environment by managing our waste better.

🎯 Exam Tip: Clearly list all three R's (Reduce, Recycle, Reuse) and briefly mention their collective purpose for a complete answer.

 

VII. Answer In Detail:

 

Question 1. Write the differences between reversible and irreversible changes.
Answer: We can tell the difference between reversible and irreversible changes by looking at a few key things:

Understanding these differences is fundamental for studying chemical reactions and physical processes.
In simple words: Reversible changes are like turning water into ice and back again; the substance stays the same and can go back. Irreversible changes are like burning wood; it turns into ash and cannot go back to wood.

🎯 Exam Tip: When differentiating concepts, always use a table for clarity and ensure each point has a corresponding contrast.

 

Question 2. What is household waste and write its classification?
Answer: Household waste includes all the solid waste that comes from our homes and apartments. This can be anything from everyday garbage and rubbish like bottles, cans, old clothes, food scraps, used packaging, and old papers. We can sort these household wastes into several types:

• Organic Wastes: These are things that come from plants and animals, like kitchen scraps, vegetables, flowers, leaves, and fruits.
• Toxic Wastes: These are harmful items such as old medicines, paints, strong chemicals, broken light bulbs, used spray cans, garden fertilizers, insect killers, old batteries, and shoe polish.
• Recyclable Wastes: These are materials that can be processed and used again, including paper, glass, metals, and various plastics.
• Solid Wastes: This category includes items like cloths that are soiled with blood or other body fluids.
• E-Wastes: This refers to electronic waste, which includes old computer parts, electronic gadgets, cell phone parts, and energy-saving CFL bulbs.

Proper classification helps in managing and disposing of each type of waste safely.
In simple words: Household waste is all the trash from our homes, like food scraps, old bottles, and batteries. We sort it into groups like organic (food), toxic (harmful chemicals), recyclable (paper, plastic), solid (dirty clothes), and e-waste (old electronics).

🎯 Exam Tip: When classifying, make sure to list each category clearly and provide specific examples for each to demonstrate a full understanding.

 

Question 3. How can we protect our environment?
Answer: We can protect our environment by following several helpful practices to reduce waste and manage resources better. These methods include:

• Using bags and containers that can be reused many times or sent for recycling.
• Choosing items that last a long time instead of those meant for single use, like durable water bottles over disposable ones.
• Separating waste into items that naturally break down (biodegradable) and those that do not (non-biodegradable), then giving them to waste collectors.
• Always putting trash in proper dustbins and disposing of it correctly, rather than littering.
• Making sure not to waste food. For example, leftover food from schools can be gathered and given to cattle.
• Turning organic waste, like food scraps and plant material, into useful manure for farming.

These small actions collectively make a big difference in keeping our planet healthy.
In simple words: We can protect our environment by reusing things, recycling, sorting our trash, not littering, not wasting food, and turning organic waste into compost.

🎯 Exam Tip: Focus on practical, actionable steps for environmental protection, emphasizing the importance of waste reduction and proper disposal methods.