HOME SCIENCE PAPER 1 - 2019 LAINAKU JOINT MOCK EVALUATION EXAMINATION

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SECTION A (40 MARKS)

Answer all the questions in this section in the spaces provided.

  1. List down two reasons for covering food during cooking.                                           (1mk)
    1. What is stitching? (1 mark)
    2. Give two qualities of a well-made stitch.                         (1 mark)
  2. Akinyi was machine stitching her apron then the needle broke suddenly. Give four causes for this.                                                                                                 (2 marks)
  3. Soup is an important part of an invalid diet, give two reasons for this.               (2 marks)
  4. Name Two types of beriberi                                                                                   (2 marks)
  5. What is a dessert?          (1 mark)
  6. Other than burning test, state two ways of identifying textile fibres.       ( 2 marks)
  7. List two preparations to make on a fabric before laying out patterns. (2 marks)
  8. Give two reasons for using interfacings in garment construction. (2 marks)
  9. List two reasons why sleeves are used in a garment. (2 marks)
  10. State three disadvantages of hoarding of goods. (3 marks)
  11. Name two nutrient disorders associated with lack of calcium in the body. (2 marks)
  12. Give two reasons why lemon juice is sometimes added to fruit salads. (1 mark)
  13. Give two advantages of being able to draft your own patterns for your garment construction.                                                                                                 (2 marks)
  14. Give two reasons for artificial feeding of the baby. (2 marks)
  15. Differentiate between overcasting and oversewing. (2 marks)
  16. Give four factors determining the cleaning efficiency of a detergent. (2 marks)
  17. Give two reasons why fullness is managed in garment during construction. (2marks)
  18. Give one reason for each of the following practices in cleaning.
    1. Cleaning a glass window from outside to the inside. (1 mark)
    2. Cleaning a wall from down to up. (1 mark)
    3. Sweeping with low long strokes. (1 mark)
    4. Pouring hot water down a kitchen sink drain. (1 mark)
  19. Give two reasons for fitting airbricks on the outer wall of a room. (2 marks)

SECTION B (20 MARKS)

Compulsory

Answer question 21 in the spaces provided.

  1. You have visited your grandmother for one week. Explain how you would assist in the following tasks.
    1. Laundering her heavily soiled nylon dress. (8 marks)
    2. Thorough cleaning her sitting room floor made of polished wood. (8 marks)
    3. Cleaning of an aluminumsufuria                                                          (4 marks)

SECTION C (40 MARKS)

Answer any two questions from this section in the spaces provided at the end of this section.

    1. Outline five reasons why hospital confinement is advisable.(5 marks)
    2. State five qualities of a well-made collar. (5 marks)
    3. Explain five considerations to make when furnishing a room                   (5marks)
    4. Give five points to ensure the purchase of quality goods by consumers. (5 marks)
    1. State Five disadvantages of renting a house (5 marks)
    2. Give the procedure of working a plain seam                                             (7 marks)
    3. List three factors to consider when setting a table                                   (3 marks)
    4. Name five fabrics which cannot be disinfected by boiling                     (5 marks)
    1. Outline five ways of saving energy when performing household tasks. (5 marks)
    2. Give five rules for darning                                                                       (5 marks)
    3. State five pieces of information expected on a product certified by Kenya Bureau of Standards. (5 marks)
    4. Mention five different types of fasteners used in garments.        (5 marks)

MARKING SCHEME

  1. Reasons for covering food during cooking (1 mark)
    • For fast cooking
    • To retain food flavors
    • To preserve vitamins
    • For hygienic reasons
    1. Defining stitch (1 mark)
      Putting a needle and a thread in and out of a fabric.
    2. Qualities of a well-made stitch. (1 mark)
      Has good density
      Good tension
      Neat beginning
      Neat ending
      Neat joining with no gaps
      Fastened at the beginning and the end
      Straight stitch and well curved
  1. Causes of needle breaking. (2 marks)
    • Bent needle
    • Needle not screwed tightly in position
    • Presser foot too loose
    • Pins left in the work
    • Removal of work from front by pulling
    • Too heavy fabric used for needle
    • Stitching over zip teeth.
  1. Why soup is an important part of an invalid diet. (1 mark)
    • Provides warmth when served hot
    • It is easily digested
    • It aids digestion
    • It stimulates appetite
    • Replenishes lost fluids in the body through vomiting/ diarhoea
    • Does not require chewing thus no fatigue of chewing.
  1. Name two types of beri beri (2 marks)
    • Wet beri beri
    • Dry beri beri
    • Infantile beri beri
  1. What is a dessert? (1 mark)
    A sweet dish served at the end of the main meal to dull the appetite.
  1. Other than burning test, other ways of identifying textile fibres. (1 mark)
    • Washability test
    • Microscopic test
    • Feeling test
  1. List two preparations to make on a fabric before laying out patterns. (2 marks)
    • Checking for factory faults
    • stentering
    • Graining the fabric
    • Pressing/ironing
  1. Reasons for using interfacings in garment construction. (2 marks)
    • Stiffen and add firmness where used, prevent stretching or sagging
    • Give body or shape
    • Increase crease resistance
    • To obtain a good knife edge
    • To give crisp tailored look to the area where applied
  1. Why sleeves are used in garments. (2 marks)
    • To introduce style features
    • To decorate the garment
    • To make some garments look more complete e.g. coats
  1. Disadvantages of hoarding of goods. (2 marks)
    • The goods will not be available to the consumer
    • The consumer spends time/money moving around to look for good
    • The goods will be more expensive to the consumer since the seller asks for whatever prices he wants
  1. Give two disorders associated with calcium deficiency. (1 mark)
    • Osteomalacia/osteoporosis
    • Rickets
    • Weak teeth
  1. Two reasons why lemon juice is added to fruit salad. (1 mark)
    • Add flavor
    • Avoid darkening of some fruits e.g. bananas
    • Source of vitamin C
    • As a preservative
  1. Two advantages of being able to draft own patterns for garment construction. (2 marks)
    • It’s cheap
    • Alterations can be made easily
    • Makes well-fitting garments
    • Encourages creativity
  1. Two reasons of artificial feeding
    • In case the mother dies
    • If the mother is sick from infectious disease
    • Successive births
    • Insufficient breast milk
    • If mother is working away from home
    • Multiple births
    • To provide nutrients that are not available in breast milk
  1. Differentiate between overcasting and oversewing. (2 marks)
    Overcasting is a stitch used for neatening raw edges while oversewing is a stitch used for joining two folded edges
  1. Four factors determining the cleansing efficiency of a detergent. (2 marks)
    • Types of builders used
    • Washing time, longer washing time leads to better results
    • Mechanical action used
    • Hardness of softness of water
    • Temperature of water used, warm water is better than cold
  1. Two reasons why fullness is introduced to garment during construction. (2 marks)
    • To get a good fit of the garment
    • To shape the garment
    • To provide fashion features
    • To decorate the garment
  1. Give one reason for each of the following. (4 marks)
    • Cleaning a glass window from outside.
    • To enhance thorough cleaning
    • Scrubbing/ cleaning a wall from down to up.
    • To avoid dirt from drying on the wall
    • To avoid tear marks
    • Sweeping with long low strokes.
    • To avoid raising dust and leaving dirt patches.
    • Pouring hot water down a kitchen sink drain
    • To disinfect the sink
    • To get rid of bad smells
    • To melt fat/ grease in sink pipe.
  1. Two reasons for fitting air bricks on the outer wall of a room. (2 marks)
    • To ventilate the room
    • To add to the aesthetic value of the house/ beauty
    • To provide natural lighting

SECTION B (20 MARKS)

Compulsory

Answer question 21 in the spaces provided.

    1. laundering heavily soiled nylon dress                  
      • Collect the necessary equipment ( 1/2)
      • Soak ( 1/2)   shortly ( 1/2) in cold soapy water ( 1/2)
      • Wash in warm ( 1/2) soapy ( 1/2)water using kneading and squeezing ( 1/2) method
      • Rinse ( 1/2) in warm water ( 1/2)
      • Final rinse ( 1/2) in cold water ( 1/2) added fabric conditioner ( 1/2)
      • Drip dry ( 1/2) on a line ( 1/2) under a shade ( 1/2) secured by pegs ( 1/2)
      • Iron when dry ( 1/2) with warm ( 1/2) iron
      • Air ( 1/2) fold and store ( 1/2)
        ( 1/2) x 16 = 8marks
    2. Thorough cleaning a polished wooden floor for the sitting room. (8 marks)
      • Collect the necessary cleaning equipment ( 1/2)
      • Move light furniture to one side ( 1/2) and sweep the floor ( 1/2) dust the skirting board ( 1/2)
      • Wipe ( 1/2) the floor and skirting board ( 1/2) using warm ( 1/2) soapy ( 1/2) water and a mop/ floor cloth ( 1/2) overlapping the sections ( 1/2)
      • Rinse ( 1/2) with clean water using a mop/ floor cloth ( 1/2)
      • Dry ( 1/2) the floor with clean dry mop/ cloth ( 1/2) allow floor to dry completely ( 1/2)
      • Apply polish sparingly ( 1/2) using a dry cloth/ floor polish mop ( 1/2) in circular motions ( 1/2)
      • Allow the polish for some time set ( 1/2)
      • Buff the floor ( 1/2) with a dry mop/ dry non fluffy cloth ( 1/2) till it shines
      • Sweep if necessary to remove any fluffs ( 1/2)
      • Rearrange the room ( 1/2)
      • Clean and dry the used equipment and store ( 1/2)
        ( 1/2) x 16 = 8 marks.
    3. Cleaning an aluminium sufuria                                   (4marks)
      Collect the necessary materials required     ( ½)
      Using hot ( ½) Soapy water (½) Scour on the same direction ( ½)Using Scouring pad/ steel wool ( ½) Rinse ( ½) in hot water ( ½) Drip dry upside down or wipe with a dish cloth( ½)
      Store appropriately 8x ½ = 4marks

SECTION C (40 MARKS)

Answer any two questions from this section in the spaces provided at the end of this section.

    1. Why hospital confinement is advisable.
      • There is plenty of qualified staff to assist incase of an emergency.
      • Hospitals have facilities for emergency delivery.
      • Best environment that is hygienic.
      • Visitors are controlled thus mother and baby not likely to be contaminated with diseases.
      • Mother and baby have enough time to rest.
      • The mother feels safer psychologically.
      • Baby receives immunization immediately.
      • The mother is trained on child care and proper hygiene.
      • Hospital delivery minimizes before and after delivery complications such as physical and mental damage to mother and the baby.
    2. Qualities of a well-made collar.
      • Should retain its shap
      • Applied accurately to lie smoothly on the neckline.
      • It should be accurately and systematically positioned with the neck curve smooth.
      • The under collar shouldn’t show on R.S. and neither the facings.
      • Stitches used to hold the under collar or facing shouldn’t be visible on Right side of the garment.
    3. Consideration to make when furnishing a house.
      • The size of the room
      • The colour scheme of the surfaces.
      • The use of the room
      • The personal preferences.
      • Occupants of the room.
      • The effect desired.
      • The existing decor.
      • How to ensure the purchase of quality goods by customers.
      • Buy from reliable and approved dealers who offer quality items.
      • Test and check for goods condition and performance of an item before buying.
      • Check on the expiry date.
      • Check for any defect.
      • Insist on instructional manual.
      • Insist on receipt to show payment.
      • Insist on a guarantee of a given time.
    1. State five disadvantages of renting a house. (5marks)
      • The house may not meet ones requirement
      • The landlord may not repairer the house on time in case required.
      • One may lose / damage his/her properties when moving from one house to another .
      • The rent maybe increased for any reason as the landlord wishes.
      • The tenancy may be terminated without prior notice.
      • There maybe restrictions from the landlord.
      • There is lack of ownership security on the tenant side.
    2. Give the procedure of working a plain seam (7marks)
      • Place together two pieces of fabric with right sides facing, matching the fitting lines and the raw edges.
      • Pin through at intervals to prevent shifting of layers.
      • Tack on the fitting line.
      • Remove pins
      • Machine on the fitting line.
      • Remove tacking and finish off threads.
      • Trim the seam allowance to one cm and neaten the two raw edges together.
    3. Factors to consider when setting a table (3marks)
      • Number of people eating the meal .
      • Number of courses in a meal
      • The cutlery and crockery required(3x1=3marks
    4. Fabrics which cannot be disinfected by boiling (5marks)
      • Viscose
      • Acrylics
      • Wool
      • Polyesters
      • Polyamides
      • Silk
    1. Why the consumer should be protected.
      • To ensure that marketed goods are safe for consumption.
      • So that the consumer is not cheated by traders.
      • To reduce monopoly which can be exploitive to the consumer.
      • So that the quality of goods and services is ensured for the consumer to get value for money.
      • To ensure goods are not hoarded by the traders thus denying the consumer the right to access items.
      • To ensure traders do not operate at unreasonable profit levels making it impossible for consumer to access essential goods e.g. food materials.
    2. Rules for Darning (5marks)
      • Use darning needle suitable for the fabric being darned
      • Use a suitable yarn of the same color and fiber content as the article being repaired
      • Darn on the wrong side of the article
      • Avoid stretching or pulling the garment while working
      • Leave a loop hanging at each end   of darning line to allow room for shrinkage
      • Make the shape of the darn irregular in order to distribute the strain of the newly inserted thread evenly into the surrounding threads .(5x1=5marks)
    3. Pieces of information expected on a product certified by the Kenya Bureau of Standards.(5marks)
      • Brand name of the product.
      • Quantity/ by count, measure or weight.
      • Name and address of manufacture.
      • Nutrients by percentage especially food materials.
      • Care and caution where applicable.
      • Sell by date and date of expiry for perishables.
    4. Different types of fasteners used in garments. (5marks)
      Buttons and button holes/ loops.
      Hooks and eyes/ bars/ loops.
      Zips.
      Ties.
      Velco tape
      presstuds.

                                                                                            


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