Home Science Paper 1 Questions and Answers - Form 3 Term 2 Opener Exams 2023

INSTRUCTIONS

• Answer all the questions.

1. Give another name for the following vitamins. (2mks)
   
   1. Vitamin K
   2. Vitamin A
2. Suggest two ways in which malnutrition can be caused by ignorance.(2mks)
3. State the function of each of the following parts of the sewing machine.(2mks)
   1. Feed dog
   2. Stop motion screw.
4. Mention two items found in the homes that are frequently recycled.(2mks)
5. State three ways of controlling infections at home. (3mks)
6. Draw care labels to show the following. (2mks)
   1. Do not bleach
   2. Use a warm iron
7. List five signs of pregnancy. (5mks)
8. Giving reasons in each case suggest three nutrients whose intake should be increased during pregnancy. (6mks)
9. Give three qualities of fruits used for making jam. (3mks)
10. State two factors which determine the efficiency of a disinfectant. (2mks)
11. Give three precautions to take when using a charcoal iron. (3mks)
12. Give three reasons for decorating foods. (3mks)
13. Give three factors that determine the laundry process to be used. (3mks)
14. State three reasons for emptying pockets before washing clothes. (3mks)
15. Suggest two factors that make cotton fabrics most preferred for makinghospital bed sheets. (2mks)

SECTION B

ANSWER ALL QUESTIONS.

16. You are preparing to go for along holidays from school. Describe how you
    would:
    
    1. Clean your wooden locker. (8mks)
    2. Launder your blanket. (12mks)
    3. Wash your stainless steel spoon. (7mks)

MARKING SCHEME

1. Give another name for the following vitamins. (2mks)
   1. Vitamin K
      • Phylloquinone
   2. Vitamin A
      • Retinol
2. Suggest two ways in which malnutrition can be caused by ignorance.(2mks)
   • Lack of knowledge about food nutrients.
   • Lack of knowledge about nutritional deficiency diseases and disorders.
3. State the function of each of the following parts of the sewing machine.(2mks)
   1. Feed dog
      • It moves the work when machining.
   2. Stop motion screw.
      • It controls the movement of the balance wheel. It is loosened to mobilize the needle when winding the bobbin.
4. Mention two items found in the homes that are frequently recycled.(2mks)
   • Polythene bags
   • Plastic containers
5. State three ways of controlling infections at home. (3mks)
   • Cleaning kitchen clothes
   • Disinfecting sanitation areas
   • Disinfecting clothes used by the sick
6. Draw care labels to show the following. (2mks)
   1. Do not bleach
      
   2. Use a warm iron
      
7. List five signs of pregnancy. (5mks)
   • Menstruation stops
   • Frequent urination
   • Increased body weight
   • Morning sickness or nausea
   • Abdomen bulges.
8. Giving reasons in each case suggest three nutrients whose intake should be increased during pregnancy. (6mks)
   • Proteins – for foetal growth and maintenance of the mother’s requirements.
   • Calcium – for proper formation of the foetus bones and teeth
   • Iron – extra needed for the foetus because during the last months of pregnancy the foetus stores enough iron to last for the six months after birth.
   • Roughages for easy digestion of foods and help the mother not to get constipation.
   • Proctective foods – to protect both mother and foetus from infections.
   • Vit D – work with calcium to build bones by aiding absorption of calcium.
   • Vit C – helps the mother’s body resist infections and for the absorption of iron in the body.
9. Give three qualities of fruits used for making jam. (3mks)
   • Should not be over ripe
   • Should have a lot of pectin.
   • Fruits should be acidic
   • Should be those that are freshly picked
10. State two factors which determine the efficiency of a disinfectant. (2mks)
    • It should kill abroad spectrum of micro organisms.
    • It should be mild on the user and the surfaces being cleaned.
    • It should be able to penetrate into the cavities.
11. Give three precautions to take when using a charcoal iron. (3mks)
    • The charcoal should be red hot to avoid smoke.
    • The hinges should be firm to avoid dropping.
    • The iron should be made of rustless material to avoid staining clothes.
12. Give three reasons for decorating foods. (3mks)
    • To make food attractive.
    • Make it look interesting.
    • Make it colourfull.
13. Give three factors that determine the laundry process to be used. (3mks)
    • The colour of the fabric for .g. white clothes are bleached, blued.
    • The type of fabric for e.g. cottons can be boiled to sterilize.
    • The degree of soiling.
    • Weight of fabric for e.g. light fabrics can be weighted by startching.
14. State three reasons for emptying pockets before washing clothes. (3mks)
    • To remove important document.
    • To remove fluff.
    • To clean the inside of the pocket.
    • To remove sharp objects.
15. Suggest two factors that make cotton fabrics most preferred for making hospital bed sheets. (2mks)
    • They can be boiled to whiten and sterilize.
    • They are not destroyed by strong sun rays.

SECTION B

ANSWER ALL QUESTIONS.

16. You are preparing to go for along holidays from school. Describe how you
    would:
    
    1. Clean your wooden locker. (8mks)
       • Protect the working area.
       • Empty the locker
       • Dust it to remove loose dirt.
       • Wipe it with a cloth wrung from warm soapy water.
       • Wipe the inside.
       • Repeat the same to the outside.
       • Clean the metallic parts of the locker.
       • Rinse with a cloth wrung from warm clean water by wiping both inside and outside of the locker.
       • Keep it in a cool airly place to dry.
       • Rub it with a clean dry cloth to shine.
       • Reline and rearrange it.
    2. Launder your blanket. (12mks)
       • Shake to remove loose dirt.
       • Wash in warm soapy water using kneading and squeezing method.
       • Rinse it severally in water to remove all braces of soap.
       • Rinse finally in warm water into which a fabric softener has been added.
       • Wring as a lump to avoid stretching.
       • Dry it flat under the shade to avoid making it harsh.
       • Press with a warm iron.
       • Air fold and store.
    3. Wash your stainless steel spoon. (7mks)
       • Wash in hot soapy water.
       • Use a sponge or cloth rinse thoroughly in hot water.
       • Dry completely, polish /buff to a high shine using soft dry tea towel or a glass cloth.
       • Stone appropriately.