Home Science Paper 1 Questions and Answers - Joint Pre-Mock Exams 2021/2022

INSTRUCTIONS TO CANDIDATES

This paper consists of three sections A, B and C
Answer all the questions in sections A and B and any two questions from section C
Candidates should answer the questions in English.

SECTION A (40 MARKS)
Answer all the questions in the spaces provided

Mention two points to bear in mind when choosing a rolling pin. (2 marks)
Give two reasons why stains should be removed as soon as they occur. (2marks)
Name two tools used for transferring pattern markings on a fabric ( 2 marks)
State two advantages of window shopping (2 marks)
Outline three ways of conserving energy when using a refrigerator ( 3 marks)
State two types of electric lamps ( 2 marks)
List two qualities of well-made gathers ( 2 marks)
State why vitamin A deficiency is not common in most parts of Kenya ( 2 marks)
Identify two bathing equipment for a baby ( 2 marks)
Give three reasons why it is important to shave armpits and pubic hair ( 3marks)
Outline two uses of air conditioners in the house ( 2 marks)
List two fullness worked by drawings threads. ( 2 marks)
State two reasons for folding in flour in creamed cake mixtures ( 2 marks)
State two ways of minimizing wastage of soap when washing ( 2 marks)
Identify two reasons for pouring hot water down the sink after cleaning. ( 2 marks)
Give two good qualities of deep –frying oil. ( 2 marks)
State two disadvantages of cross method when ventilating a room ( 2 marks)
Mention four points to bear in mind when buying candles. ( 4 marks)

SECTION B (COMPULSORY) 20 MARKS

Your aunt is down with Tuberculosis and you have been requested to take care of the house.
Outline how you would:
1. Wash her fast-colored cotton nightdress with a gaping seam. (7mks)
2. Thoroughly clean the cemented pavement in the compound. (7mks)
3. Thoroughly clean the aluminium sufuria used for cooking ugali. (6mks)

SECTION C (40 MARKS)
Answer any two questions from this section.

1. Explain three reasons for covering a saucepan when cooking. (6 marks)
2. Discuss three reasons why biogas is rarely used in urban centers despite its advantages (6 marks)
3. Outline four qualities of a well-made dart (4 marks)
4. Give four reasons why a consumer must be protected (4 marks)
1. Explain three ways of avoiding food wastage in the kitchen (6 marks)
2. Discuss three factors to consider when choosing fuels in the home (6 marks)
3. Explain three points on the care of children’s toys (6 marks)
4. Outline two attributes of lighting. (2 marks)
1. Explain three reasons of using machine-fell seam on children’s garments (6 marks)
2. Suggest four ways of reducing expenditure on food in the home. (4 marks)
3. Highlight four points that leads to proper maintenance of garments. (4 marks)
4. Explain three problems a mother may experience in breastfeeding (6 marks)

MARKING SCHEME

SECTION A (40 MARKS)

Mention two points to bear in mind when choosing a rolling pin. (2 marks)
- Should be smooth
- Easy to grasp / hold
Give two reasons why stains should be removed as soon as they occur. (2marks)
- To prevent them from getting fixed / set permanently
- For easy removal of stain
Name two tools used for transferring pattern markings on a fabric ( 2 marks)
- Tailors chalk
- Tracing wheel and carbon paper.
State two advantages of window shopping (2 marks)
- It helps one to know where the item is to be found
- Enables one to compare qualities of different items offered at different prices.
- The prospective buyers are allowed to hold and examine the goods.
Outline three ways of conserving energy when using a refrigerator ( 3 marks)
- Switch off when not in use
- Cool food first before storing in the fridge
- Keep door shut to keep away warm air
- Avoid overloading
State two types of electric lamps ( 2 marks)
- The filament lamp
- The fluorescent lamp
List two qualities of well-made gathers ( 2 marks)
- Should be well-distributed
- Should not be bulky
State why vitamin A deficiency is not common in most parts of Kenya ( 2 marks)
- There are lots of fruits and vegetables rich in vitamin A readily available in the country
- Children are given vitamin A in the well baby clinics
Identify two bathing equipment for a baby ( 2 marks)
- Basin
- flannel
Give three reasons why it is important to shave armpits and pubic hair ( 3marks)
- Reduces perspiration
- Prevents bad smells
- To avoid body parasites
Outline two uses of air conditioners in the house ( 2 marks)
- Brings in fresh air into the room and removes stale air from a room
- Can be set at a certain temperature to control room temperature.
List two fullness worked by drawings threads. ( 2 marks)
- Easing
- Gathers
- Shirring
State two reasons for folding in flour in creamed cake mixtures ( 2 marks)
- To aerate the mixture
- To prevent loss of air already trapped air
State two ways of minimizing wastage of soap when washing ( 2 marks)
- Using soft water to wash clothes
- Soaking clothes where possible
Identify two reasons for pouring hot water down the sink after cleaning. ( 2 marks)
- To dissolve any grease present
- To disinfect / kill germs
- To kill pests e.g cockroaches.
Give two good qualities of deep –frying oil. ( 2 marks)
- Should have high smoking point to avoid burning upon heating
- Be clean without any residues
- Should not have a definite flavor that can be transferred to the food being cooked.
State two disadvantages of cross method when ventilating a room ( 2 marks)
- Leads to banging of doors / windows
- Air does not get well-circulated in rooms because it gets in suddenly and rushes out immediately
Mention four points to bear in mind when buying candles. ( 4 marks)
- Buy non-drip candles - Should suit the purpose / occasion
- Buy thick candles - Have flat bases.

SECTION B (COMPULSORY) 20 MARKS

Your aunt is down with tuberculosis and you have been requested to take care of the house.
Outline how you would:
1. Wash her fast-colored cotton nightdress with a gaping seam. (7mks)
  - Assemble all the equipment and materials needed ( ½ )
  - Put on protective clothing / gear e.g gloves ( ½ )
  - Soak for a short time ( ½ ) in cold water added a disinfectant ( ½ )
  - Wring off soaking water
  - Wash in warm ( ½ ) soapy ( ½ ) water, using mild friction / light rubbing ( ½ )
  - Wash systematically till done
  - Rinse thoroughly in warm ( ½ ) water to remove dirt and soap
  - Final rinse in clean cold ( ½ ) water added vinegar ( ½ ) to brighten the colour
  - Wring out water ( ½ ) turn inside out
  - Dry in the shade ( ½ ) hold with pegs ( ½ )
  - When dry, mend the gaping seam ( ½ )
  - Clean, dry and store equipment used.
2. Thoroughly clean the cemented pavement in the compound. ( 7mks)
  - Assemble all equipment and materials needed ( ½ )
  - Sweep ( ½ ) the pavement and dispose of dirt
  - Wet a section of pavement with warm ( ½ ) soapy ( ½ ) water scrub ( ½ ) thoroughly with a scrubbing brush
  - Rinse the section with floor cloth ( ½ ) wrung from ( ½ ) clean ( ½ ) warm ( ½ ) water severally.\
  - Move to the next section ( ½ ) clean and rinse as above
  - Overlap ( ½ ) the sections to avoid dirty border marks
  - Dry ( ½ ) the pavement with a dry mop / floor cloth ( ½ )
  - Clean, dry and store the equipment used ( ½ )
3. Thoroughly clean the aluminium sufuria used for cooking ugali. (6mks)
  - Collect all equipment and materials needed ( ½ )
  - Soak ( ½ ) to loosen the ugali
  - Scrap off ( ½ )with a plastic / wooden spoon ( ½ )
  - Wash using hot ( ½ ) soapy ( ½ ) water using sisal fibre/ steel wool ( ½ ) clean along one direction to prevent scratches ( ½ )
  - Rinse thoroughly in hot ( ½ ) water
  - Dry upside down on a rack / wipe with a clean dry cloth ( ½ )
  - Store upside down / cover with a lid ( ½ )
  - Clean and dry the used equipment and store well ( ½ )

SECTION C (40 MARKS)
Answer any two questions from this section.

1. Explain three reasons for covering a saucepan when cooking. (6 marks)
  - To conserve water – soluble nutrients which may escape in the steam
  - To protect the food from any foreign body which may drop in the pan
  - To retain flavor which may escape through volatile acids.
  - To conserve fuel as this reduces cooking time
2. Discuss three reasons why biogas is rarely used in urban centers despite its advantages. (6mks)
  - Scarcity of land in urban centers / estates for installing the digester
  - In availability of raw materials since domestic animals are not reared in towns
  - The bad odour pollutes the air ( 3 points well-explained = 2x3 = 6mks
3. Outline four qualities of a well-made dart (4 marks)
  - Secured / reinforced
  - Should taper off to nothing
  - Lie flat on both R.S & W.S
  - Pressed to face right direction
4. Give four reasons why a consumer must be protected (4 marks)
  - To ensure they get good quality goods and services.’
  - To ensure they get the right quantity of goods as stated on packages
  - To ensure they buy goods & services at a fair price.
  - To ensure consumers get the right information
  - To ensure they use safe products
1. Explain three ways of avoiding food wastage in the kitchen (6 marks)
  - Cook just enough to avoid unnecessary leftovers.
  - Food should be prepared correctly to avoid wastage.
  - Use left over foods instead of discarding
  - Store food properly to avoid spoilage
2. Discuss three factors to consider when choosing fuels in the home (6 marks)
  - The running cost of the fuels
  - The cost of the equipment to be used alongside the fuel purchased
  - The fuel should be versatile in use.
3. Explain three points on the care of children’s toys (6 marks)
  - Clean and disinfect them regularly
  - Repair when they get damaged
  - Store them well in a clean dry place
4. Outline two attributes of lighting. (2 marks)
  - Lighting in the home should be bright enough for work to be done efficiently.
  - Be well-distributed to avoid casting shadows on working areas
  - Should enhance interior decoration
  - Should be without glare
  - Minimize accidents and ensures ease of movement.
1. Explain three reasons of using machine-fell seam on children’s garments (6 marks)
  - It’s a very flat seam hence comfortable against the baby’s skin
  - It’s a very strong seam due to the double row of stitches hence can withstand frequent washing / wear.
  - Raw edges are well – concealed hence no irritation to children’s skin
2. Suggest four ways of reducing expenditure on food in the home. (4 marks)
  - Using cheaper substitutes e.g pulses instead of animal proteins
  - Using foods in season
  - Buying food in bulk where possible
  - Taking advantage of special offers if any.
  - Avoid wastage when preparing food.
3. Highlight four points that leads to proper maintenance of garments. (4 marks)
  - Using them for the right purpose to avoid spoilage
  - Mending them when they get torn
  - Laundering them well according to the fibres from which they are made.
  - Storing them properly when dry and in a dry place.
  - Removing stains as soon as the occur.
4. Explain three problems a mother may experience in breastfeeding (6 marks)
  - Breast engorgement
  - Sore nipples
  - Mother’s inability to breastfeed due to several problems / illness
  - Baby’s refusal to breastfeed
  - Mother’s refusal to breastfeed.