UPMSP Class 12 Home Science cheat sheet

Definition: Home Science is an interdisciplinary applied science that uses knowledge from biology, chemistry, physics, economics, sociology and psychology to improve the quality of individual and family life.

Core subject areas: food and nutrition, human development and family studies, resource management, textiles and clothing, housing and interior design, health and hygiene, consumer education, and extension education.

Home Science is both a science (systematic, evidence-based) and an art (practical application in daily living); it is not limited to cooking or housekeeping.

Scope of work settings: schools and colleges (teaching), hospitals and clinics (dietetics), ICDS and anganwadi programmes, NGOs, food industry, textile and garment industry, hospitality, media, and self-employment.

Career paths by area: dietitian/nutritionist, child development worker, preschool teacher, fashion designer, interior designer, extension officer, consumer activist, food technologist, and entrepreneur.

UPMSP Class 12 Home Science is assessed through theory plus a practical component; project work, viva and practical file marks are part of the final score.

Distinguishing feature from pure sciences: Home Science focuses on the family as the unit of study and on applied problem-solving rather than only on laboratory theory.

Extension education role: Home Science professionals transfer research findings to rural and urban families through demonstrations, exhibitions, camps and mass media.

Six nutrient classes: carbohydrates, proteins, fats, vitamins, minerals and water; carbohydrates and fats are energy-yielding, while vitamins, minerals and water are protective and regulatory.

Energy values: carbohydrate 4 kcal/g, protein 4 kcal/g, fat 9 kcal/g; 1 kcal equals 4.184 kJ.

Macronutrient energy contribution in a balanced Indian diet: carbohydrates about 55-65%, fats 20-30%, proteins 10-15% of total energy.

Functions: proteins build and repair tissues, carbohydrates supply quick energy and fibre, fats carry fat-soluble vitamins and supply essential fatty acids, water regulates temperature and transports nutrients.

Fat-soluble vitamins A, D, E, K are stored in the body and can be toxic in excess; water-soluble B-complex and C are not stored and must be eaten daily.

Deficiency diseases: vitamin A - night blindness; vitamin D - rickets in children and osteomalacia in adults; vitamin C - scurvy; iron - anaemia; iodine - goitre; protein-energy - marasmus and kwashiorkor.

Balanced diet: one providing all nutrients in correct proportion and adequate energy for age, sex, activity level and physiological state (pregnancy, lactation, illness).

Meal planning principles: adequacy, balance, variety, moderation, economy, seasonal and local food use, and consideration of family food habits, religion and budget.

Food exchange lists allow substitution within a food group so that energy and nutrient content stay nearly the same; one exchange of cereal equals about 20 g raw rice or wheat.

Special needs: adolescents need more iron, calcium and protein; pregnant and lactating women need extra protein, calcium, iron and folate; elderly need fewer calories but adequate protein and calcium.

Food spoilage causes: microorganisms (bacteria, moulds, yeasts), enzymes, oxidation, moisture gain or loss, and physical damage; bacteria grow fastest in the danger zone of 5 degrees C to 60 degrees C.

Preservation principles: lower temperature (refrigeration, freezing), raise temperature (boiling, canning, pasteurisation), remove moisture (drying, dehydration), raise acidity or sugar/salt concentration (pickling, jam, jelly), exclude oxygen (vacuum packing), and use preservatives.

Pasteurisation heats milk to about 63 degrees C for 30 minutes (holder method) or 72 degrees C for 15 seconds (HTST), then cools rapidly; it kills pathogens but does not sterilise.

Canning uses high temperature and pressure in a retort or pressure cooker to destroy Clostridium botulinum spores; low-acid foods need pressure canning, not open boiling.

Jam sets through pectin, sugar and acid at a soluble solids level of about 68-70 degrees Brix; jelly is clear and made from fruit juice, jam from crushed pulp.

Fermentation by lactic acid bacteria lowers pH and preserves foods such as curd, idli, dosa and pickles; salt draws out moisture and inhibits spoilage organisms.

Food-borne illness prevention: wash hands and utensils, separate raw and cooked food, cook thoroughly, keep food at safe temperatures, and use safe water and raw materials (WHO five keys).

Adulteration tests: starch in milk detected by iodine giving blue colour; metanil yellow in turmeric by hydrochloric acid giving pink colour; chalk in flour by effervescence with dilute acid.

Food standards and laws in India: FSSAI administers the Food Safety and Standards Act 2006; labels must show ingredients, net weight, date of manufacture, best-before/expiry, nutritional information and FSSAI licence number.

Nutrient loss in processing: water-soluble vitamins leach into cooking water, vitamin C is destroyed by heat and air, and milling removes bran and germ, so parboiling and minimum-water cooking reduce losses.

Life-span stages: prenatal, infancy (0-2 years), early childhood (2-6), later childhood (6-12), adolescence (12-19), adulthood and old age; each stage has characteristic physical, cognitive, social and emotional changes.

Prenatal development: germinal period (first 2 weeks), embryonic period (2-8 weeks, organ formation, most vulnerable to teratogens), fetal period (9 weeks to birth).

Developmental principles: development proceeds from head to tail (cephalocaudal) and from centre to extremities (proximodistal); it is continuous, sequential and follows individual rates.

Infancy milestones: social smile around 6 weeks, head control by 3 months, sitting with support by 6 months, sitting independently by 8 months, walking with support by 12 months, speaking first words around 1 year.

Piaget's stages: sensorimotor (0-2), preoperational (2-7), concrete operational (7-11), formal operational (11 and above).

Immunisation schedule (India): BCG, OPV-0 and hepatitis B at birth; pentavalent and OPV at 6, 10 and 14 weeks; measles-rubella and vitamin A at 9 months; DPT booster at 16-24 months.

Breastfeeding: exclusive breastfeeding for the first 6 months, colostrum is rich in antibodies and must not be discarded, complementary feeding starts at 6 months while breastfeeding continues to 2 years.

Care of the newborn: warmth (skin-to-skin contact), hygienic cord care, early initiation of breastfeeding within one hour, and recognition of danger signs such as poor feeding and fast breathing.

Adolescence: puberty onset with growth spurt, secondary sexual characteristics, need for iron and calcium, and identity formation; peer influence peaks while parent conflict often rises.

Play is the child's work: it develops motor, language, cognitive and social skills; types include solitary, parallel, associative and cooperative play in that developmental order.

Resources are anything used to achieve goals; classified as human (time, energy, skills, knowledge, interest, attitudes) and non-human (money, land, equipment, community facilities).

Management process steps: planning, organising, implementing and evaluating; decision-making runs through all steps.

Time management tools: peak-load planning, work simplification, standardisation, and the time plan chart; the 24-hour day is the fixed resource that cannot be stored.

Work simplification techniques: eliminate unnecessary work, combine tasks, change the sequence, and use labour-saving equipment to reduce fatigue and energy cost.

Energy is a human resource measured in calories; heavy household tasks cost more energy than light ones, so task allocation should match family members' capacity.

Money management: budget as a plan of expenditure, maintaining records, distinguishing fixed from flexible expenditure, and saving through small savings schemes and banks.

Family life cycle stages (starting, expanding, launching, ageing) change income, expenditure and space needs; spending typically peaks in the expanding stage.

Decision-making types: routine, impulsive, planned and habit-based; group decisions in families need communication and consensus.

Community resources include anganwadi, primary health centre, bank, post office, panchayat, school, library and cooperative society; using them reduces family cost.

Consumer in the market: compare unit price, read labels, insist on a cash memo, check ISI, AGMARK, FSSAI and Hallmark marks, and know redressal forums.

Fibre classification: natural (cotton, flax, jute, wool, silk) and man-made (rayon, polyester, nylon, acrylic); natural fibres are further divided into vegetable, animal and mineral.

Cotton: cellulose fibre, absorbent, comfortable, strong when wet, damaged by mildew and strong acids; burns quickly with a paper-like smell.

Wool: protein (keratin) fibre, warm, elastic, felts on agitation in hot water, damaged by alkalis and moths; burns slowly with a smell of burning hair.

Silk: protein fibre, lustrous, weaker when wet, damaged by sunlight and perspiration; polyester is strong, quick-drying, thermoplastic and low in absorbency.

Yarn properties: staple fibres are spun, filament fibres are continuous; yarn twist, count and ply affect fabric strength, texture and warmth.

Weaving: plain, twill and satin weaves are basic; twill shows a diagonal line, satin has a smooth lustrous face, and knitted fabrics stretch because of loop structure.

Finishing processes: singeing, desizing, bleaching, mercerising (increases cotton lustre and strength), dyeing, printing and calendering.

Stain removal rule: treat the stain while fresh, use cold water for blood and protein stains, blot rather than rub, and test any reagent on a hidden hem first.

Laundry: sort by colour and fabric, use correct water temperature, and remember that soap is ineffective in hard water while detergents work in both.

Pattern making and fitting: take body measurements, add seam allowance (usually 1.5 cm), and check grain line, selvedge and fabric width before cutting.

Functions of housing: protection from weather and danger, privacy, space for family activities, and support for health and social development.

Selection of a house or site: soil drainage, water supply, sunlight, ventilation, access to transport, schools and health facilities, and freedom from noise and pollution.

Principles of design: balance (symmetrical or asymmetrical), rhythm, emphasis, proportion, harmony and scale.

Elements of design: line, form, texture, colour and space; these are combined using the principles of design.

Colour schemes: monochromatic (one hue), analogous (neighbouring hues), complementary (opposite hues) and triadic; cool colours recede and make a room appear larger.

Colour psychology: red and yellow are warm and stimulating, blue and green are cool and restful; light colours reflect light and dark colours absorb it.

Lighting types: direct, indirect, semi-direct and diffused; task lighting is used for reading and cooking, general lighting for the whole room.

Ventilation: cross-ventilation needs openings on opposite walls; an openable window area of about one-fifth of floor area is a common guide.

Furniture arrangement should keep circulation paths clear, place heavy pieces against walls, and group seating for conversation; scale must suit room size.

Home furnishings: curtains and draperies control light and privacy, floor coverings reduce noise, and washable, colour-fast fabrics are practical for Indian homes.

Health definition (WHO): a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.

Personal hygiene: daily bathing, hand washing with soap before eating and after toilet use, oral care twice daily, clean nails, and clean clothing.

Environmental hygiene: safe drinking water, sanitary latrine use, garbage disposal, control of stagnant water to prevent mosquito breeding, and ventilation.

Vital signs: normal adult pulse 60-100 beats per minute, respiration 12-20 per minute, body temperature about 37 degrees C, blood pressure about 120/80 mm Hg.

First aid aims: preserve life, prevent worsening, promote recovery; the sequence is danger, response, airway, breathing, circulation (DRABC).

Burns: cool with running water for at least 10-20 minutes, cover with a clean non-stick cloth, do not apply oil, toothpaste or ice, and do not burst blisters.

Fracture and sprain: immobilise the part, apply a cold pack to a sprain, use a sling or splint, and never attempt to straighten a deformed limb.

Choking in a conscious adult: give up to five back blows between the shoulder blades, then abdominal thrusts (Heimlich manoeuvre); for an infant use back blows and chest thrusts, not abdominal thrusts.

Snake bite: keep the person calm and still, immobilise the limb below heart level, remove tight items, and reach hospital immediately; do not cut, suck or apply a tourniquet.

Drowning and unconsciousness: check breathing, start rescue breathing or CPR if trained, place an unconscious breathing person in the recovery position, and call emergency services (108 in India).

Consumer rights (Consumer Protection Act 2019): right to safety, information, choice, be heard, seek redressal and consumer education.

Consumer Protection Act 2019 covers e-commerce and misleading advertisements and provides for the Central Consumer Protection Authority; complaints can be filed in district, state or national commissions by value of claim.

Standard marks in India: ISI (BIS) for industrial goods, AGMARK for agricultural produce, FSSAI for food, Hallmark for gold jewellery, and Ecomark for environment-friendly products.

Consumer responsibilities: check quality and expiry, insist on a cash memo, compare prices and unit rates, read labels, and avoid impulse buying.

Redressal steps: first approach the seller, then the manufacturer or consumer forum; keep bills, warranty cards and written complaints as evidence.

Family welfare meaning: planned and voluntary improvement of family health, education, income and relationships, not merely birth control.

Small family norm: two children, spacing of at least three years, and use of family planning methods advised by a health worker; female sterilisation and condoms are common methods.

Family welfare programmes in India: ICDS for child nutrition and preschool education, National Health Mission, Janani Suraksha Yojana, mid-day meal scheme and Ayushman Bharat.

Budget as a consumer tool: plan income and expenditure, distinguish needs from wants, save and insure, and avoid borrowing for consumption.

Advertising literacy: identify persuasive techniques, compare advertised claims with the label, and recognise that 'free gifts' and '50% off' may raise the effective price.

Practical assessment components: practical file or record book, project report, viva voce and laboratory performance; each carries separate marks, so all must be completed.

Project method steps: select a problem, state objectives, plan the method, collect and record data, analyse, draw conclusions and present a written report with photographs or samples.

Suitable project topics: nutritional status survey of school children, food adulteration testing, meal planning for a pregnant woman, study of a local consumer market, or a child development observation.

Food practical skills: weigh ingredients accurately, follow standard recipes, calculate nutrient content using food composition tables, and evaluate products by sensory testing (appearance, aroma, texture, taste).

Sensory evaluation: use a score card, keep panellists uninformed of the sample identity, and provide water to rinse between samples.

Child observation record: note date, age, setting and behaviour objectively without interpretation, and maintain confidentiality of names.

Textile practical skills: identify fibres by burning test, take body measurements correctly, prepare a paper pattern and stitch a simple garment with neat seam finishes.

Report writing: use headings, tables and labelled diagrams, cite sources, and attach the practical file with dated entries signed by the teacher.