Step 1: Vitamin Classification.

Vitamins can be categorized into two types:

- Fat-soluble vitamins: These include Vitamins A, D, E, and K. They dissolve in fats and are stored in the liver and adipose tissues.

- Water-soluble vitamins: This group includes Vitamin C and the Vitamin B complex (B1, B2, B3, B6, B12, folic acid, etc.). These dissolve in water and are not stored in the body in significant amounts.


Step 2: Analysis of Options.

- Vitamin A \(\Rightarrow\) Fat-soluble.

- Vitamin B \(\Rightarrow\) Water-soluble.

- Vitamin D \(\Rightarrow\) Fat-soluble.

- Vitamin K \(\Rightarrow\) Fat-soluble.


Step 3: Conclusion.

The only water-soluble vitamin from the given options is Vitamin B.



Final Answer: \[ \boxed{The correct answer is (B) Vitamin B.} \] Quick Tip: Remember: Vitamins B and C are water-soluble, while A, D, E, and K are fat-soluble.

Step 1: Purpose of an Ice Cap.

An ice cap is a medical device commonly used to cool down the body temperature, particularly helpful in reducing fever. It works by absorbing heat and providing relief from conditions such as acute fever to prevent further complications.


Step 2: Discarding Incorrect Options.

- Consuming poison \(\Rightarrow\) requires treatment with antidotes or stomach wash, not ice caps.

- Cold or sleepiness \(\Rightarrow\) Ice caps are not used for these conditions.


Step 3: Correct Application.

Therefore, the proper use of an ice cap is for managing acute fever.



Final Answer: \[ \boxed{The correct answer is (A) on acute fever.} \] Quick Tip: Ice caps are useful in lowering high fever by cooling the body’s surface. They are not suitable for treating poison or drowsiness.

Step 1: Diarrhoea characteristics.

Diarrhoea is characterized by frequent, watery stools, which result in the rapid loss of fluids and essential electrolytes.


Step 2: Identifying the primary loss.

- Fats, proteins, and carbohydrates are not lost in significant quantities during diarrhoea.

- The major loss during this condition is water and electrolytes, leading to dehydration.


Step 3: Consequences of untreated dehydration.

Severe water depletion can result in shock, and if not addressed, it can lead to death.



Final Answer: \[ \boxed{The primary loss in diarrhoea is water.} \] Quick Tip: To rehydrate, Oral Rehydration Solution (ORS) is the most effective method to replace the lost fluids and electrolytes.

Step 1: Understanding the concept of a budget.

A budget is a financial plan that outlines expected income and expenditure for a specific period.


Step 2: Types of budgets.

- A deficit budget occurs when expenditure exceeds income.

- A surplus budget arises when income surpasses expenditure.

- A balanced budget is where income is equal to expenditure.


Step 3: Ideal budget.

The most stable and ideal situation is a balanced budget, where there is neither a deficit nor surplus, ensuring economic equilibrium.


Final Answer: \[ \boxed{The ideal budget is a Balanced Budget.} \] Quick Tip: A balanced budget is crucial for maintaining economic stability and preventing excessive borrowing or inflation.

Step 1: Respiratory system.

It includes the nose, trachea, bronchi, and lungs, which are responsible for inhaling oxygen and exhaling carbon dioxide.

Step 2: Role of liver.

The liver belongs to the digestive system, where it produces bile and helps in metabolism. It has no role in respiration.


Final Answer: \[ \boxed{Liver is not part of respiratory system.} \] Quick Tip: Respiration involves only airways and lungs; liver is concerned with digestion and detoxification.

Step 1: Unit price.

Given, cost of 1 litre milk = Rs. 65.

Step 2: Multiply for 2.5 litres.
\[ Total cost = 65 \times 2.5 \] \[ = 65 \times \left(\frac{5}{2}\right) = \frac{325}{2} = 162.50 \]

Step 3: Conclusion.

Thus, the cost of 2.5 litres milk = Rs. 162.50.


Final Answer: \[ \boxed{Cost of 2.5 litres milk = Rs. 162.50} \] Quick Tip: Always multiply the unit price with the required quantity to get total cost. Convert fractions carefully when multiplying.

Step 1: Identify Vitamin B\(_1\).

Vitamin B\(_1\) is the first discovered vitamin of the B-complex group. It plays a crucial role in carbohydrate metabolism and nerve functioning.

Step 2: Match with options.

- Thiamine \(\Rightarrow\) Vitamin B\(_1\).
- Riboflavin \(\Rightarrow\) Vitamin B\(_2\).
- Niacin \(\Rightarrow\) Vitamin B\(_3\).
- Cobalamine \(\Rightarrow\) Vitamin B\(_{12}\).

Step 3: Conclusion.

Therefore, Vitamin B\(_1\) is called Thiamine.


Final Answer: \[ \boxed{Vitamin B\(_1\) is Thiamine.} \] Quick Tip: Deficiency of Vitamin B\(_1\) causes Beri-Beri, a disease affecting nerves and heart.

Step 1: Identifying instruments.

- Thermometer \(\Rightarrow\) Measures body or environmental temperature.
- Lactometer \(\Rightarrow\) Measures purity of milk.
- Barometer \(\Rightarrow\) Measures atmospheric pressure.
- Hydrometer \(\Rightarrow\) Measures density of liquids.

Step 2: Conclusion.

Since the question asks about measuring body temperature, the correct instrument is thermometer.


Final Answer: \[ \boxed{Body temperature is measured with Thermometer.} \] Quick Tip: Clinical thermometers commonly measure 35°C–42°C. Digital thermometers are widely used today.

Step 1: Nutrient calorie values.

- 1 gram carbohydrate = 4 calories.
- 1 gram protein = 4 calories.
- 1 gram fat = 9 calories.

Step 2: Application.

Since the question asks about protein, the energy value is 4 calories per gram.


Final Answer: \[ \boxed{1 gram protein gives 4 calories.} \] Quick Tip: Carbohydrates and proteins provide 4 calories/gram; fats provide 9 calories/gram.

Step 1: Role of iron.

Iron is essential for hemoglobin formation in red blood cells, which carries oxygen.

Step 2: Diseases related to deficiency.

- Beri-Beri \(\Rightarrow\) Caused by deficiency of Vitamin B\(_1\).
- Scurvy \(\Rightarrow\) Caused by deficiency of Vitamin C.
- Rickets \(\Rightarrow\) Caused by deficiency of Vitamin D.
- Anaemia \(\Rightarrow\) Caused by deficiency of iron.

Step 3: Conclusion.

Thus, iron deficiency leads to anaemia.


Final Answer: \[ \boxed{Anaemia is caused by deficiency of iron.} \] Quick Tip: Green leafy vegetables, jaggery, and red meat are rich sources of iron.

Step 1: Understanding rib cage.

The rib cage protects lungs and heart. Ribs are attached to the vertebral column at the back and mostly to the sternum at the front.

Step 2: Rib count.

Humans have 12 pairs of ribs = 24 ribs.


Final Answer: \[ \boxed{Humans have 24 ribs.} \] Quick Tip: There are 12 pairs of ribs: 7 true ribs, 3 false ribs, and 2 floating ribs.

Step 1: Importance.

World Toilet Day is an official United Nations international observance day to spread awareness about sanitation and safe toilets.

Step 2: Exact date.

It is celebrated every year on 19th November since 2013 when UN recognized it formally.

Step 3: Elimination.

Other dates (August, September, June) are not correct for this observance.


Final Answer: \[ \boxed{World Toilet Day is on 19th November.} \] Quick Tip: World Toilet Day raises awareness about sanitation, aiming for global access to toilets by 2030.

Step 1: Source of wool.

Wool is a natural animal fibre obtained from the hair of animals like sheep, goat, camel, yak, etc.

Step 2: Elimination of wrong options.

- Vegetable fibres \(\Rightarrow\) Cotton, jute.
- Chemical fibres \(\Rightarrow\) Nylon, polyester.
- None of these \(\Rightarrow\) Incorrect.


Final Answer: \[ \boxed{Woollen fibre is obtained from animals.} \] Quick Tip: Animal fibres include wool and silk; vegetable fibres include cotton and jute.

Step 1: Nutrient composition of jaggery.

Jaggery is unrefined sugar rich in minerals, especially iron.

Step 2: Health benefit.

Because of its iron content, jaggery is useful in preventing iron-deficiency anaemia.

Step 3: Elimination.

- Protein \(\Rightarrow\) Found in pulses.
- Sodium \(\Rightarrow\) Found in salt.
- Vitamin D \(\Rightarrow\) Synthesized in skin by sunlight.


Final Answer: \[ \boxed{Jaggery is a good source of iron salt.} \] Quick Tip: Eating jaggery after meals helps improve digestion and prevents anaemia.

Step 1: ATS and Tet-Vac.

ATS = Anti-Tetanus Serum. Tet-Vac is a tetanus vaccine.

Step 2: Disease prevention.

Both are given after injuries, cuts, or wounds to prevent tetanus infection caused by Clostridium tetani.

Step 3: Elimination.

- Diphtheria \(\Rightarrow\) DPT vaccine.
- Cholera \(\Rightarrow\) Oral cholera vaccine.
- Tuberculosis \(\Rightarrow\) BCG vaccine.


Final Answer: \[ \boxed{ATS/Tet-Vac is for prevention of Tetanus. \] Quick Tip: Always take a tetanus injection after deep cuts or injuries to avoid infection.

Step 1: What is red medicine?

In common usage, “red medicine” refers to a disinfectant used for wounds.

Step 2: Scientific name.

The chemical used is Potassium permanganate (KMnO\(_4\)), which has a deep purple-red colour in solution.

Step 3: Elimination.

- Acetic acid \(\Rightarrow\) Vinegar.
- Sodium chloride \(\Rightarrow\) Table salt.
- Potassium sulphate \(\Rightarrow\) Fertilizer.


Final Answer: \[ \boxed{Red medicine = Potassium permanganate.} \] Quick Tip: Potassium permanganate is widely used as an antiseptic and disinfectant.

Step 1: Traffic light colours.

- Red \(\Rightarrow\) Stop.
- Yellow (Amber) \(\Rightarrow\) Get ready.
- Green \(\Rightarrow\) Go.

Step 2: Application.

Thus, green light indicates permission to proceed.


Final Answer: \[ \boxed{Green traffic light means Go.} \] Quick Tip: Always follow traffic signals to avoid accidents and ensure road safety.

Step 1: Bone count at birth.

Newborns have about 300 bones.

Step 2: Bone fusion.

As a child grows, many bones fuse (e.g., skull, spine, pelvis).

Step 3: Adult skeleton.

An adult human body has 206 bones.


Final Answer: \[ \boxed{The human body has 206 bones.} \] Quick Tip: At birth: 300 bones. In adults: 206 bones after fusion.

Step 1: Cause of typhoid.

Typhoid is a bacterial disease caused by Salmonella typhi.

Step 2: Mode of transmission.

It spreads through contaminated food and water, not by mosquitoes.

Step 3: Elimination.

- Anopheles \(\Rightarrow\) Malaria.
- Clostridium \(\Rightarrow\) Tetanus, botulism.
- Bacillus \(\Rightarrow\) Anthrax (B. anthracis).


Final Answer: \[ \boxed{Typhoid is caused by Salmonella typhi. \] Quick Tip: Typhoid is water-borne. Hygiene and vaccination are the best preventive measures.

Step 1: Composition of organic substances.

Organic substances mainly contain carbon (C), hydrogen (H), and oxygen (O).

Step 2: Combustion process.

When an organic substance (like wood, coal, petrol, food, etc.) burns in the presence of oxygen, the chemical reaction is: \[ C + O_2 \rightarrow CO_2 \quad and \quad H + O_2 \rightarrow H_2O \]

Step 3: Identifying the gas.

The major gas produced is carbon dioxide (CO\(_2\)), along with water vapour.

Step 4: Elimination of wrong options.

- Ammonia \(\Rightarrow\) Not formed in combustion.
- Oxygen \(\Rightarrow\) Used during combustion, not produced.
- Nitrogen \(\Rightarrow\) Present in air, but not produced in burning.


Final Answer: \[ \boxed{Combustion of organic substances produces Carbon dioxide.} \] Quick Tip: Always remember: Combustion of carbon-based fuels releases CO\(_2\), a greenhouse gas responsible for global warming.

Step 1: Interpret the task.

The question asks for \emph{two aims of cooking, so we will select the most fundamental ones.

Step 2: Recall the major purposes of cooking.

(i) Safety \Rightarrow destroys harmful microorganisms and toxins.

(ii) Palatability \Rightarrow improves taste, aroma, colour, and texture.

(iii) Digestibility \Rightarrow softens food; breaks down complex nutrients (e.g., starch gelatinization).

(iv) Variety and acceptability \Rightarrow enables many preparations.

(v) Preservation \Rightarrow extends shelf life for some foods.

Step 3: Choose the best two and justify.

We choose \emph{(a) Safety and \emph{(b) Digestibility/Palatability because they are universal to most foods and most frequently tested in exams.



Final Answer:
\[ \boxed{(1) To make food safe by destroying microbes; (2) To improve digestibility and palatability by softening and flavour development.} \] Quick Tip: Remember “\textbf{S-D-P}”: Safety, Digestibility, Palatability—these three cover almost every exam phrasing about objectives of cooking.

Step 1: Organize by domains.

Think of \emph{air, water, soil, biodiversity. Pick one strong action for each.

Step 2: List actionable measures.

(1) Afforestation/Tree plantation \Rightarrow increases green cover, absorbs CO\(_2\).

(2) Water conservation \Rightarrow rainwater harvesting, fixing leaks, preventing water pollution.

(3) 3R waste management \Rightarrow Reduce–Reuse–Recycle; segregate biodegradable/non-biodegradable; composting.

(4) Pollution control and clean energy \Rightarrow public transport, car-pooling, non-polluting fuels, maintaining vehicles.

(Optional extras for revision: ban single-use plastic; protect wildlife; soil conservation via contour ploughing.)



Final Answer:
\[ \boxed{Tree plantation;\; Water conservation (incl.\ RWH);\; 3R waste management with segregation;\; Control of pollution using clean energy/transport.} \] Quick Tip: Use the mnemonic \textbf{T–W–W–P}: Trees, Water saving, Waste 3Rs, Pollution control.

Step 1: Define.

Traffic rules are the legally prescribed regulations that ensure safe and orderly movement of vehicles and pedestrians on roads.

Step 2: Core elements (examples you can cite).

(i) Obey signals: Red–Stop, Yellow–Ready, Green–Go.

(ii) Wear seat-belt/helmet; no mobile phone while driving.

(iii) Follow speed limits, lane discipline, and no-overtaking zones.

(iv) Give way to pedestrians at zebra crossings and ambulances.

(v) Carry valid documents; avoid drunken driving.



Final Answer:
\[ \boxed{Traffic rules are regulations for road users that must be followed (signals, speed limits, helmets/seat-belts, lane and pedestrian rules) to ensure safety. \] Quick Tip: For short answers, define in one line \emph{and} add 2–3 concrete examples (signals, speed, helmet) to fetch full marks.

Step 1: Define by the 3 Es.

An \emph{Ideal Kitchen ensures Efficiency, Ergonomics, and Environmental hygiene.

Step 2: Key features.

(i) Proper ventilation and chimney; ample natural/artificial light.

(ii) Safe layout with \emph{work-triangle (sink–stove–storage) and non-slip, easy-to-clean surfaces.

(iii) Adequate water supply and drainage; covered waste bins; pest control.

(iv) Organized storage at reachable heights; separate areas for raw/cooked food.

(v) Fire safety: extinguisher/sand bucket; first-aid kit; electrical safety (earthing).



Final Answer:
\[ \boxed{A clean, well-ventilated, well-lit, and safely planned kitchen with efficient workflow (work-triangle), proper storage, drainage, and fire/first-aid safety.} \] Quick Tip: Write “\textbf{V–L–W–S–F}”: Ventilation, Lighting, Work-triangle, Storage & sanitation, Fire/first-aid.

Step 1: Understand the injury.

A sprain is stretching/tearing of ligaments around a joint (commonly ankle, wrist, knee).

Step 2: Typical symptoms to state.

(i) Sudden pain at the joint.

(ii) Swelling (oedema) and tenderness on touch.

(iii) Bruising/discolouration.

(iv) Restricted or painful movement; stiffness.

(v) Warmth around joint; sometimes a popping sound at injury.

(vi) In moderate–severe cases, inability to bear weight/use the joint.



Final Answer:
\[ \boxed{Pain, swelling, tenderness, bruising, limited/painful movement (often with warmth) and—if severe—difficulty bearing weight.} \] Quick Tip: First aid = \textbf{RICE}: Rest, Ice, Compression, Elevation; seek medical care if swelling/severe pain persists.

Step 1: Biological utilities (inside the body).

(i) Hydration and temperature regulation (sweating).

(ii) Medium for metabolic reactions; transport of nutrients and oxygen via blood.

(iii) Digestion and absorption; helps form saliva and gastric juices.

(iv) Excretion of wastes through urine and perspiration.

Step 2: Daily-life and societal utilities.

(v) Drinking, cooking, cleaning, and sanitation/hygiene.

(vi) Agriculture and animal husbandry (irrigation, dairy).

(vii) Industry and power generation; fire-fighting.

(viii) Ecosystem services (rivers, lakes) and recreation.



Final Answer:
\[ \boxed{Water is essential for body functions (metabolism, transport, temperature control, excretion) and for daily living (drinking, cooking, hygiene), agriculture, industry, and ecosystem health.} \] Quick Tip: For short answers, write “\textbf{B–H–A–I}”: Body functions, Household use, Agriculture, Industry/ecosystems.

Step 1: Define both conditions.

Dysentery \Rightarrow intestinal infection with inflammation of the colon; stools often contain blood and mucus with abdominal cramps and tenesmus (straining).

Diarrhoea \Rightarrow passage of frequent, loose or watery stools leading mainly to dehydration; inflammation may or may not be present, usually no blood.

Step 2: Compare key features point-by-point.

(1) Stool nature: Dysentery \Rightarrow small-volume stools with blood/mucus; Diarrhoea \Rightarrow large-volume watery stools.

(2) Pain \& tenesmus: Dysentery \Rightarrow marked abdominal pain and tenesmus; Diarrhoea \Rightarrow cramping may occur but tenesmus uncommon.

(3) Main danger: Dysentery \Rightarrow blood loss and colonic damage; Diarrhoea \Rightarrow dehydration and electrolyte loss.

(4) Common causes: Dysentery \Rightarrow Shigella/Entamoeba histolytica; Diarrhoea \Rightarrow viruses (e.g., rota/noro), contaminated food/water, toxins.

(5) Treatment focus: Dysentery \Rightarrow antimicrobials as indicated + fluids; Diarrhoea \Rightarrow ORS/rehydration is primary, diet adjustment.

Step 3: Summarize the diagnostic clue.

Blood with mucus and severe straining \Rightarrow think dysentery; profuse watery stools with dehydration \Rightarrow think diarrhoea.



Final Answer:
\[ \boxed{Dysentery = bloody/mucus small stools with tenesmus (inflamed colon);\quad Diarrhoea = frequent watery large stools with dehydration, usually no blood.} \] Quick Tip: Mnemonic: \textbf{Dysentery = “Bloody \& Strain”}, \textbf{Diarrhoea = “Water \& Drain (dehydration)”}. First aid in both: prompt ORS; seek medical help if blood, high fever, or persistent symptoms.

Step 1: Group by sewing use.

In home science/tailoring we mainly use three types of scissors.

Step 2: Name each type and write the specific use.

(1) Dressmaker’s shears / Fabric-cutting shears \Rightarrow long blades and bent handle; used for cutting fabric and patterns smoothly on the table.

(2) Trimming/Embroidery scissors \Rightarrow small, sharp, pointed; used to trim threads, notch corners, cut small curves and delicate work.

(3) Pinking shears \Rightarrow zig-zag blades; used to finish raw edges to reduce fraying and for decorative edging.

Step 3: Practical note.

Keep separate scissors for fabric and paper; paper dulls fabric shears quickly.



Final Answer:
\[ \boxed{Mainly 3 types: (i) Dressmaker’s shears — cutting fabric;\; (ii) Trimming/Embroidery — threads \& fine work;\; (iii) Pinking shears — anti-fray edging.} \] Quick Tip: Remember \textbf{C–T–P}: Cut fabric (shears), Trim threads (small scissors), Pink edges (pinking shears). Keep them sharp and used only for their purpose.

Step 1: Basic classification used in road-safety courses.

There are two primary licences: Learner’s Licence (LL) and Permanent Driving Licence (DL).

Step 2: Sub-classification of Permanent DL (for clarity).

Permanent DL commonly has categories such as Non-Transport (e.g., LMV, two-wheeler) and Transport/Commercial (goods/passenger). An International Driving Permit (IDP) is an additional authorization for driving abroad.

Step 3: Present concise exam answer.

State the count as two, with brief mention of the common categories under the permanent licence.



Final Answer:
\[ \boxed{Two primary types — Learner’s Licence and Permanent Driving Licence (which is further Non-Transport/Transport; IDP is an extra permit).} \] Quick Tip: Write “\textbf{LL} \Rightarrow training stage; \textbf{DL} \Rightarrow full licence (non-transport/transport).” If asked for categories, list LMV, MCWG, HMV etc.

Step 1: Nutrition goal.

Typhoid affects intestine and causes fever; aim is easy digestion, adequate calories/fluids, and gut rest.

Step 2: During high fever.

Give fluid or soft liquid diet: ORS, boiled water, rice water, thin dal water, clear soups, tender coconut water, diluted fruit juices; small frequent sips.

Step 3: As fever subsides (convalescence).

Soft, low-fibre, easily digestible foods: khichdi, suji/semolina porridge, custard, curd, mashed potatoes, soft rice, soft chapati with dal; add adequate proteins (milk/curd/paneer/eggs as tolerated).

Step 4: What to avoid.

Avoid spicy, fried, very oily foods; coarse/raw salads; very high-fibre items; carbonated drinks; unhygienic street food. Maintain strict food and water hygiene.

Step 5: Feeding pattern.

Small frequent meals 5–6 times/day; plenty of fluids; maintain electrolyte balance; continue ORS if loose stools present.



Final Answer:
\[ \boxed{Typhoid diet = fluid/soft, low-fibre, easily digestible, energy- and protein-adequate with small frequent feeds, plenty of safe fluids; avoid spicy/fried and coarse foods.} \] Quick Tip: Think \textbf{F–S–L}: Fluids first, Soft low-fibre as tolerated, then Light normal diet. Hygiene is critical to prevent relapse.

Step 1: State the core idea.

Saving means setting aside a part of present income for future use.

Step 2: List key advantages.

(1) Emergency cushion \Rightarrow meets medical or job-loss shocks without costly borrowing.

(2) Goal achievement \Rightarrow education, home, vehicle, travel.

(3) Investment \& wealth creation \Rightarrow savings can be invested to earn returns.

(4) Reduced debt/interest burden \Rightarrow pay from savings instead of loans.

(5) Retirement security \Rightarrow funds for old age when income falls.

(6) Improved creditworthiness \& peace of mind \Rightarrow financial stability and confidence.



Final Answer:
\[ \boxed{Savings provide security for emergencies, help reach financial goals, enable investment and retirement planning, cut debt costs, and give peace of mind.} \] Quick Tip: Use the rule \textbf{“Pay Yourself First”}: save a fixed % of income every month before spending; automate it to build discipline.

N/A Quick Tip: Remember the treatment triad: \textbf{R–I–R} = Reduction, Immobilization, Rehabilitation. In first aid, \textbf{splint as found}, cover wounds, and never try to “set” the bone at the scene.

N/A Quick Tip: For “utility” questions, think \textbf{E–R–B–V–S–F}: Energy (ATP), Removal of CO\(_2\), Blood pH, Voice, Smell \& safety, Filtering/defence.

Step 1: Define food poisoning.

Food poisoning is an illness caused by eating contaminated food or drink. The contamination can be due to bacteria, viruses, toxins, or chemicals. It typically results in vomiting, diarrhoea, abdominal pain, and fever.

Step 2: Factors causing food poisoning.

(1) Biological causes:
- Bacteria (e.g., Salmonella, \textit{E. coli, \textit{Staphylococcus)
- Viruses (e.g., Norovirus, Hepatitis A)
- Parasites (e.g., Giardia, Amoeba)

(2) Chemical causes:
- Pesticide residues in fruits/vegetables
- Heavy metals in water (lead, mercury)
- Contaminated food containers (plastic/metal leaching)

(3) Physical causes:
- Dirty water, unwashed hands, or insects contaminating food
- Improper food storage (e.g., keeping milk unrefrigerated)
- Eating stale food or food past expiry date

Step 3: Preventive measures (extra point).

- Always wash hands before cooking/eating
- Store food properly at correct temperatures
- Cook food thoroughly; avoid stale or unhygienic food
- Drink safe, clean water


Final Answer:
\[ \boxed{Food poisoning is illness from contaminated food. Main causes are biological (bacteria, viruses), chemical (pesticides, metals), and physical (unclean handling, poor storage). \] Quick Tip: Remember the 3 categories of causes: \textbf{Biological, Chemical, Physical}. Always write 1–2 examples for each to score full marks.

Step 1: Define sewing kit.

A sewing kit is a small collection of basic tools used for stitching, repairing, and maintaining clothes and fabrics. It is portable and essential in every household.

Step 2: List of items and their uses.

(1) Needles: Different sizes; used for hand sewing, embroidery, or hemming.

(2) Threads: Cotton, polyester, or silk threads; used to stitch fabrics of different types and colours.

(3) Scissors: Dressmaker’s shears for cutting fabric; small scissors for trimming threads.

(4) Measuring tape: Used to measure body dimensions and cloth length/width.

(5) Thimble: Protects fingers while pushing a needle through thick cloth.

(6) Pins and Pin-cushion: Pins hold cloth pieces together before sewing; pin-cushion stores pins safely.

(7) Seam ripper: Used to remove wrong stitches.

(8) Chalk/Marking pencil: For marking outlines and patterns on fabric.

(9) Buttons, hooks, and zips: Fastening accessories for garments.


Step 3: Summarize.

Together, these items make sewing easy, accurate, and safe.


Final Answer:
\[ \boxed{A sewing kit contains needles, threads, scissors, tape, thimble, pins, seam ripper, chalk, and buttons—each with a specific role in stitching and garment repair.} \] Quick Tip: Use the mnemonic \textbf{“N-T-S-M-T-P-S-C-B”} (Needle, Thread, Scissor, Measuring tape, Thimble, Pins, Seam ripper, Chalk, Buttons) to recall items quickly.

Step 1: Define Environmental Pollution.

Environmental Pollution is the undesirable change in the physical, chemical, or biological characteristics of air, water, soil, or surroundings due to human or natural activities. It makes the environment harmful for living beings.

Step 2: Types of pollution (brief).

- Air Pollution: Release of smoke, gases, and dust into the atmosphere from industries, vehicles, and burning of fuels.
- Water Pollution: Contamination of rivers, lakes, and groundwater by sewage, chemicals, and plastics.
- Soil Pollution: Degradation of land due to pesticides, plastics, and industrial waste.
- Noise Pollution: Loud sounds from traffic, industries, and loudspeakers causing disturbance.

Step 3: Effects of pollution on human life.

(1) Health effects:
- Air pollution causes respiratory problems (asthma, bronchitis, lung cancer).
- Water pollution leads to diseases like cholera, typhoid, and diarrhoea.
- Soil pollution contaminates food crops, leading to poisoning.
- Noise pollution causes stress, hearing loss, and hypertension.

(2) Economic effects:
- Increased healthcare costs due to pollution-related illnesses.
- Reduced productivity due to sick workers.

(3) Social and psychological effects:
- Stress and reduced quality of life.
- Shortened life expectancy in heavily polluted areas.

Step 4: Conclusion.

Pollution directly affects human survival, well-being, and development. Preventive measures like afforestation, waste management, clean fuels, and public awareness are necessary.


Final Answer:
\[ \boxed{Environmental pollution is the contamination of air, water, soil, or surroundings. It causes serious effects on human life including respiratory diseases, water-borne illnesses, stress, economic loss, and reduced life expectancy.} \] Quick Tip: For exams, always define pollution first, mention 3–4 types, then explain health, economic, and social impacts on human life.