FREE KCSE PAST PAPERS

2019 KCSE Marking Scheme

2019 KCSE marking scheme is out. The answers for all 2019 KCSE subjects are available in their original format.

The answers are available at a cost of Kshs 200 for all subjects. The money is payable through Mpesa number 0720502479.

Kindly note that the marking schemes are original- nothing has been added or removed from them.

You can access the question papers on the link below:

2019 KCSE questions

Sample answers are as shared below:

2019 KCSE English paper 1 marking scheme

Expect an informal letter
Format (5 marks)
Address
Date
Salutation
Closing tag
Content (6 marks)
Expect at least three good reasons – give two marks each if each reason is conveyed in a con­vincing manner- ( ability to explain and persuade should come through ).
Paragraphing (1 mark)
Introductory paragraph
Body
Conclusion
Language use (8 marks)
An impression mark should be given based on the candidates overall linguistic ability as fol­lows:

 

2019 KCSE English paper 2 marking scheme

  1. (a) Probably 800,000 years ago/ some human species may have made occasional use of fire as early as 800,000 years ago (2*1 mark)

(b) Sample response:
Humans used fire for light and warmth. They also used it as a weapon against dangerous animals. They burnt the impossible thickets and turned them into grasslands, thereby creating a habitat for animals. And after burning their neighbourhoods, enterprising humans were able to harvest roasted animals, nuts, and tubers for food. (50 words)
Marking instructions
• Allow up to 60 words
• If in note form penalize by 50% at each point and affix capital N on the penalized point
• Penalize by a glimmer for faulty expression once in a sentence
Any 5 points = 5 marks

 

2019 English paper 3 marking scheme

3 (C) The Novel

John Steinbeck, The Pearl
Introduction
Having desires and dreams of prosperity is not a bad thing but we must guard against becoming obsessed. In an attempt to pursue our desires we may end up endangering our lives and those of the immediate family members. In The Pearl by John Stenbeck, Kino gets into trouble as he tries to achieve his desires.
(Accept any other relevant introduction-2 marks)
Although Kino runs away because of his safety and that ofhis immediate family members, he still clings to the pearl with the hope of getting a better selling price. Kino starts on a journey to a foreign land whose dangers and security he knows very little about. Kino is armed with a sword against heavily armed trackers. Kino thinks that the trackers are after both their lives and the pearl. He manages to kill the trackers, however, their only son Coyotito is shot dead. (Pp44-46, 63, 72-73, 74-77, 92, 95, 96-98, 104, 106-107, 108, 114-115, 116-118).

2019 KCSE mathematics alternative A paper 1 marking scheme

2019 KCSE mathematics alternative A paper 2 marking scheme

2019 KCSE biology paper 1 marking scheme

  1. a)Irritability/sensitivity/Response to a stimulus/stimuli;

b)Reproduction;

 

2. a) • Shape of the leaf/lamina (broad/narrow);
• (Leaf) margin (smooth/serrated/lobed);
• (Leaf) type (simple/compound);
• (Leaf) sheath/petiole (absence/presence);
• (Leaf) apex (pointed/absent);
• Arrangement/phyllotaxis/phyllotaxy;
• (Leaf) colour/variegation;
(2 x 1) = 2 marks

 

b) • Has mammary glands;
• Body covered by fur/hair;
• Gives birth/does not lay eggs/is viviparous;
• Has external ears/pinna;
• Has sweat glands;

 

3. a) Nerve cell/motor neurone;

b)

• Longer axon to deliver/transmit action potential a long way;
• Has (numerous) dendrites for receiving/deliver_ing impulses/transmit impulses;
• Myelin sheath for faster transmission of impulses;
• Schwarm cell for secretion of myelin sheath;
• Nodes of ran vier to enhance speed of transfer of impulses;
• Cell body to control transmission of impulses;
(2 x l)= 2 marks

4 a)Osmosis;

b) Solution E was hypertonic/had more solute molecules compared to solution F/solution F was hypotonic to solution E; by osmosis, water molecules moved through the semi-permeable membrane, G (from solution F to E); hence the decrease in volume of solution F/increased volume of solution E;

c) Semi-permeable membrane/visking tubing/slice of a raw potato/ pawpaw/pig bladder/cellophane paper/dialysis membrane;

2019 KCSE biology paper 2 marking scheme

2 a)  i)The number of red blood cells count increase with the increase in altitude; to increase the oxygen carrying capacity (by the hemoglobin molecules in blood); since oxygen concentration is lower at higher altitudes; OWTTE

ii) White blood cells serve to protect the body against harmful micro-organisms/parthogens; the quantities of parthogens or vulnerability of the body to microbial attack is not dependent on the altitude (to be countered by the white blood cells); hence the number of white blood cells’ count is constant at whatever altitude; OWTTE

b) Atmospheric pressure decreases with the increase in altitude; the imbalance between the ( outer) atmospheric pressure at high altitude and the internal blood pressure (generated by the heart) results in one nose bleeding at higher altitudes/internal blood pressure is higher than the ( outer) atmospheric pressure; OWTTE

3 a) Enables living organisms to avoid dangerous/harmful/harsh climatic/environmental conditions;

OR

– Enables living organisms obtain/access favourable environmental conditions (light, water, oxygen); any one

 

b (i) Positive phototropism/tip bends towards light; light causes migration of auxins (produced at the tip); to darker side of the shoot, resulting in faster division of cells/elongation on the darker/ opposite side of the shoot, hence bending towards light;

(ii) Both seedlings remain upright; seedling II does not have the
tip while in III the tip has been covered by an opaque material preventing light from causing unequal distribution of auxins; OWTTE

(iii) Fitting an agar block treated with auxins at the decapitated end of seedling 11; removing the opaque material covering the tip of seedling Ill/replacing the opaque cap with a transparent one;

 

2019 KCSE biology paper 3 marking scheme

1 a) i- Specimen F has thorns/spikes that prick herbivores/mammals;

– Photograph E, the plant normally produces a (white) unpleasant/poisonous/harmful fluid/liquid/substance;
– Photograph H, the plant has thorny leaves/produces an unpleasant/poisonous fluid; Has thick cuticle to reduce transpiration
(3 marks)

ii- Specimen F: Habitat- terrestrial habitat (with average/moderate rainfall/water); leaves fold to conserve water ( during drought); ( 2 marks) Photograph E: Arid/semi-arid/desert habitat; thick/fleshy stem that stores water/fluid; leaves reduced in size/number/size; (2mks)

– Photograph H: Arid/semi-arid/desert habitat; plant leaves fleshy storing water; thick/has muscillage. (2mks)

2019 KCSE physics paper 1 marking scheme

  1. Actual reading= 0.38mm
    ( error) = 0.03 -Meter reading = 0.35mm ✓
  2. On sucking air rushes into the straw ✓ through the hole making it difficult ✓ to reduce pressure in the straw by sucking
  3. – Using detergents/impurities
    – Raising the temperature
  4. The flask absorbs heat from the hands and first expands✓ hence lev­el of liquid ✓ which expands more than the glass causing the rise. ✓
  5.  Wax on rod B drops off first. ✓
    The thicker rod conducts heat faster than the thinner one. ✓

 

2019 KCSE physics paper 2 marking scheme

2. An uncharged conductor will also cause a decrease on the divergence of the leaf.
OR
Both positively charged conductor and an uncharged body cause a de­crease in divergence.

3. – Do not cross one another.
– They are complete loops.
– Direction of field is from North to South.
They are normal to the surface at the poles.
Closer at the poles and further apart away from the poles. Any two ✓

4 (b) – Increasing the number of turns in the coil. ✓
– Increasing the current ( or number of cells). ✓

 

8. – To sterilize medical equipment ✓
– To kill cancerous cells and malignant growths in the body. ✓
9. During the first half cycle of the input signal, current flows in the first diode, ✓
During the second half cycle of the input signal, current flows in the sec-ond diode, ✓
When the currents through the two diodes are combined a fully rectified wave signal is obtained as the output signal. ✓
10. By increasing the heating current in order to produce more electrons. ✓ Increasing the filaments current.
Increasing the temperature of the cathode.
11. – Fuse in the neutral wire ✓ instead of the live wire.
– Switch to lamp on the neutral ✓ wire instead of live wire.
– Connection of lamp B on Live wires only.
12. Alpha particle. ✓
13. Shows the object as being further than it actually is. ✓
Shows diminished images.
14l Infrared ✓

 

2019 KCSE physics paper 3 marking scheme

QUESTION2
PART A MARKING SCHEME

a) Centimeter mark = 50.1cm

b) (i) d = 11.3 cm

d = 0.113m

c) (i) V=17cm3

ii) V1 = 19.5cm3 d1 = 10cm

2019 KCSE chemistry paper 1 marking scheme

5. a) Mg(s) + H2O(g) ➔ MgO(s) + H2(g)

b) To prevent suck-back of water which would crack the boiling tube.

c) Sodium is a very reactive metal hence reacts explosively with steam.

 

6. Add calcium oxide /lime to raise the soil pH. Calcium oxide is a basic oxide hence dissolves in water in the soil to form alkaline solution that reacts with acidic soil raising soil pH.

 

8 .

(a) (i) Ionic/ electrovalent.

(iii) Covalent (Van der Waals)

(b) Chloride ofD giant ionic; when in molten state the ions are mobile hence conducts electric current. E is giant molecular and therefore does not
have mobile ions to carry electric current.

21. a) Atomic radii decreases across the period. Across the period the number of protons increases increasing the nuclear attraction for the outermost electrons contributing to decrease in atomic radii.

b) AlC13 is molecular/ covalent. It differs from other metal chlorides
because it exits as a dimmer. Two molecules of AlC13 pair through co­ordinate bonds while the other metal chlorides are ionic.
OR
AlC13 hydrolyzes in water while the other chlorides do not.

 

2019 KCSE chemistry paper 2 marking scheme

  1. (a) (ii) Compounds made of carbon and hydrogen only and where the bonds ( carbon to carbon) are single covalent /every carbon atom contains its maximum number of hydrogen atoms.

4 (b)-Add excess aqueous ammonia to the water,
formation of white precipitate shows presence of Al3+ or Pb2+ ions

To another sample of water add dilute H2S04 / HCl
formation of colouress solution shows presence of Al3+ / add potassium iodide if a yellow precipitate does not form it confirms presence of Al3+ ions.

 

(c) (i) – Heat strongly and weigh.
– re-heating the substance and re-weighing. If mass does not change constant mass has been attained.

 

2019 KCSE chemistry paper 3 marking scheme

2019 KCSE General Science paper 1 marking scheme

1. Zoology; RJ wrong spelling.

2. Production of fermented dairy products e.g. yoghurt;

• Production of alcoholic beverages;
• Production of leavened bread;
• Fermented porridge;

3. (i) Diffusion – process by which particles/molecules move from a region of high concentration to a region of low concentration;

(ii) Active transport – process by which particles move from a region of low concentration to a region of high concentration with the use/expenditure of energy;

b) By cells becoming turgid/turgidity;

 

SECTION B CHEMISTRY

18. (a) Liquid = Solid phase
Temperature remain constant as Kinetic energy reduces, articles, form bonds with each other coming closer to form solids. Energy produced is used in bond formation/ substance is changing state

(b) Solid

19. (a) Noble gases

(b) (i) Atomic Radius Increases downwards due to increase in the number of energy levels.
(ii) Melting point decreases downward the group, the forces of attraction between atoms weakens hence decrease in melting point.

20 (a) Is a substance when in solution/melt conducts and decomposes by passage of an electric current.

(b) Mercury contains delocalized electrons (free electrons) which conduct electricity while Lead (II) bromide in molten state contains IONS (Pb2+, Br) which conduct electricity.

21 (a) Electrons
Protons
Neutrons
Maximum 1 mark : two correct and above

 

2019 KCSE General Science paper 2 marking scheme

1. a) – Leaves modified into thorns/are needle like to reduce evapotranspiration;

– Succulent stems to store water;
– Deep rooted to absorb water from deep horizons;
– Few stomata to reduce transpiration;
– Sunken stomata to reduce rate of transpiration;
l Have waxy cuticle to reduce rate of respiration;

b) – Suffocation of aquatic animals due to reduced dissolved oxygen levels;
– Rapid growth of aquatic weeds;
– Disease agents in sewage contaminated water;
– Toxic chemicals in sewage kill aquatic organisms;
– Accumulation of heavy metals causing blood poisoning, nervous problems and death;
– Rj pollutes the water alone.

 

2. a) The production of an off spring as a result of the fusion of a male and a female gamete;

b) Is the duration between fertilization and birth;

 

3. a) Progesterone; RJ wrong spelling.
b) Repair and healing of the endometrium/ uterine wall;
c) Luteinising hormone (l.H); Rj abbreviations
d) Sperms/ova remain viable in the female reproductive system for
2- 3 days;

4. a) Epigeal germination; RJ wrong spelling.
b) Due to faster elongation of the hypocotyl than the epicotyl the cotyledons and plumule are pushed above the ground;
c) Protects the plumule/Photosynthesis;
d) Exposure of the hypocotyl to light makes auxins to migrate to the lower side; Higher concentration of auxins on the lower side makes the lower sides to grow faster enabling the seedling to straighten;

2019 KCSE History and Government paper 1 marking scheme

  1. Identify two theories which explain the origin of man.

(i) The Creation Theory.
(ii) The Evolution Theory.
(iii) The Traditional/Mythical Theory.

 

2. State two ways in which the Agikuyu interacted with the Maasai during the pre-colonial period.

(i) They intermarried.
(ii) They traded/exchanged goods.
(iii) They borrowed items from each other.
(iv) They raided each other/fought.

 

5. Give one advantage of dual citizenship to a Kenyan.

(i) A person can work in either of the countries.
(ii) One can choose to live in either of the countries.
(iii) One is entitled to the rights/freedoms provided in the Constitution of Kenya.

 

6. State two ways in which national integration has promoted economic development in Ken­ya.

i) It has enabled citizens to work/get employed in any part of Kenya.
ii) It has enabled free movement of goods/services within the country.
iii) It has enabled citizens to invest/establish businesses in any part of the country.

iv) It has enabled people to buy property anywhere in the country.

 

7. Identify one minority group whose rights were protected by the Constitution of Kenya at independence.

(i) The Europeans.
(ii) The Asians.
(iii) Minority indigenous African communities.

 

8. Outline two advantages of indirect democracy as practised in Kenya.

(i) People exercise their democratic rights/elect leaders of their own choice.
(ii) The leaders are accountable to the electorate.
(iii) The electorate/people can vote out/recall their elected leaders.
(iv) People’s views in decision making are taken into account.

2019 KCSE History and Government paper 2 marking scheme

8. Outline two functions of the ancient town of Kilwa.

(ii) It was an administrative centre.
(iii) It was a religious centre/Islamic centre.
(iv) It was a defence centre.
(v) It was a settlement area.
(vi) It was an industrial centre.

 

12. State two political factors which undermined the nationalistic struggle for majority rule in South Africa.

(i) They were not united.
(ii) African political parties were banned/proscribed.
(iii) Some were arrested/detained/jailed.
(iv) They were not allowed to have free press/freedom of press/ press censorship.
(v) Laws entrenching apartheid were passed/ Pass laws/ movement restrictions.
(vi) They were forced into exile.
(vii) Divide and rule/ creation of Bantustans.
(viii) Banning of trade unions.
(ix) Some of the fighters were killed.

 

13. Highlight two ways in the Cold War was fought.

i) Through propaganda.

ii) Through economic sanctions.

(iii) Through financial/technical aid to the allies.
(iv) Through military support to the allies of the enemy.

 

14. Identify two permanent members of the United Nations Security Council.
(i) China
(ii) United States of America/ America.
(iii) United Kingdom/Britain
(iv) France
(v) Russia /USSR.

 

15. Give two common services provided by the East African Community to the members between 1967 – 1977.

(i) Judicial services/Court of Appeal.
(ii) Educational services/Examinations Council.
(iii) Publishing services.
(iv) Transport services/Railways/Water/Air transport.
(v) Postal services.
(vi) Financial services/banking services.
(vii) Meteorological services.
(viii) Research services.

 

2019 KCSE Geography paper 1 marking scheme

1. (a) Distinguish between Geography and Environment

Geography refers to the study of the distribution of natural and human features/phenomena and their interrelationship on the earth surface/ study of earth as home of human kind while environment refers to external conditions that surround an organism and has influence on its behaviour.

(b) Identify the two branches of Geography
– Physical Geography

-Human Geography

-Physical Geography

 

2. (a) Name the parts marked P, Q and R.
P- Vacuum
Q -Glass tube

R-Mercury

(b) State three benefits of weather forecasting to human activities.
– It enables farmers to plan their farming activities.
– It helps in guiding tourist activities.
– It enables military personnel to plan their military activities.
. It enables people to choose suitable clothing.
– It guides people on sporting activities.
– It guides people on fishing activities.
– It helps to determine the times for air/sea travels
– Planning for weather related disasters

3. Give four proofs that support the theory of continental drift.
– Some continents seem to fit geometrically/ jigsaw fit along the coastal margins
– There are similarities between the fossils of flora and fauna found on both sides of Atlantic Ocean. / Paleontological/Paleozoological evidence.
– Some geological structure can be traced from one continent to another.
. There are similarities in the past climate in the different parts of the world. /Paleo climatological evidence.
– There are continuous mountain ranges made up of young volcanic rocks at the mid Atlantic.
. The shores of Red Sea exhibits evidence of having undergone lateral displacement. /Sea floor spreading.
. Paleo magnetic evidence/minerals with same alignment are found in different continents adjacent to one another.
m Similarity of fauna/flora in different continents (Congo & Amazon).

 

2019 KCSE Geography paper 2 marking scheme

1. (a) Name two rivers that supply water to Mwea-Tebere irrigation scheme.
– River Thiba
– River Nyamindi
– River Murubara

 

(b) State how government policy influenced the establishment ofMwea- Tebere irrigation scheme.
– There was need to keep detainees busy.
– For people to provide free labour.
– There was need to settle landless people.
– The need to control flood of rivers that pass through the area.
– Increase food production.
– For maximum utilization of land.
– To fully utilize the black cotton soil.

2019 KCSE Christian Religious Education Paper 1 marking scheme

1. (a) How the learning of Christian religious education in secondary schools promotes the goal of national development

(i) Christian Religious Education encourages the learner to have a positive attitude towards work/hard work is encouraged/laziness is discouraged
(ii) Leaming Christian Religious Education helps the learner to acquire virtues/moral values which promotes economic development
(iii) Christian Religious Education discourages vices which hinder national development
(iv) Learners are equipped with knowledge/skills which lead to career development/ employment
(v) Learners are taught their duties/responsibilities as human beings/the need to develop the environment/nation
(vi) Learners are taught the need to use their talents for the development of self/others/nation
(vii) Christian religious education stresses the importance of peace/love/unity which contributes to a favourable working environment
(viii) Learners are taught to appreciate their culture/the cultures of others for national cohesion.

 

(b) Meaning of the biblical accounts of creation in Genesis chapters 1 and 2
(i) God existed before creation
(ii) God is the sole creator of all that exists
(iii) Creation is by the will/power of God/not an accident
(iv) Creation is a continuous process/reproduction/multiplication
(v) Creation takes place in an orderly/systematic manner
(vi) God created everything for a purpose
(vii) Human beings are to rule over/be in charge of God’s creation
(viii) Human beings are created to live in fellowship with God
(ix) God is concerned about the wellbeing of all creation/provides/sustains
(x) Everything that God created is good
(xi) Marriage is ordained by God/ for companionship
(xii) Work / rest is ordained / willed by God

 

2019 KCSE Christian Religious Education Paper 2 marking scheme

a) Titles that Prophet Isaiah used to refer to the future messiah.
( i) Prince of peace.
(fai) Eternal/everlasting father
(faifa) Wonderful counsellor
(fav) Immanuel
(v) Mighty God.

 

b) The annunciation of the birth of John the Baptist by angel Gabriel.
( i) Zechariah was in the temple burning incense/ performing his priestly duties
(ifa) An angel of God appeared to him at the altar
(ifai) Zechariah was overcome with fear
(iv) The angel told him not to be afraid
(v) He told him that his prayers had been heard/Elizabeth his wife would bear a son.
(vi) The angel said that they were to call him John.
(vifa) The angel said that the child would be great in God’s sight/would not drink wine/ would be filled with the Holy Spirit from birth.
(vfaii) Zechariah questioned the possibility of having a child since he and his wife were old
(ix) The angel revealed his name as Gabriel/said he had been sent by God
(x) The angel told Zechariah that he would not be able to speak until the time the child is born.
(xi) Zechariah delayed in the temple which made the worshippers to wonder.
(xfafa) When he came out, he could not speak/he made signs to the people/people perceived that he had seen a vision in the temple.

 

c) Ways in which a Christian couple should respond to the challenge of being childless.
( i) The couple should pray to God to bless them with children.
(ifa) They should seek guidance and counselling from the church leaders.
(iifa) The couple should seek for medical advice/assistance.
(iv) They should be patient/not anxious.
(v) They can adopt children.
(vi) The couple should remain faithful to each other.
(vii) The couple can take/care with children of their relatives for company.

2019 KCSE Home Science paper 1 marking scheme

1. Separating tools used in the kitchen.
(a) Flour sieve
(b) Tea sieve/strainer
(c) Draining spoon
(d) Colander
( e) Conical strainer

2 Functions of vitamin B1 in the body.
– Release of energy from carbohydrates.
– Stimulates growth.
-Promotes appetite for food.
– Aids in digestion.
– Proper functioning of the nervous system.
– Prevents the occurrence of Beriberi.

3. Uses of carrots in cooking
– Adds colour.
– Adds taste/flavour.
– Improves the texture.
– Improves the nutritive value.
– For garnishing.

4. Factors that determine the choice of a cooking method.
– Time available.
– Type of food.
a Individual nutritional values.
– Skill of the chef
– Type of equipment available.

5. Difference between chemical and biological raising agents. Biological raising agents are microorganisms which when subjected to fermentation produce carbon dioxide and alcohol while chemical raising agents produce carbon dioxide by heating a mixture which sodium bicarbonate or baking powder has been added.

6( Ways of preventing skin diseases.
d Eat a balanced diet that is rich in vitamin A, B and C.
– Wash the body daily.
– Do not share personal items.
e Use of medicated soaps and creams.
– Sterilization.
– Avoid mixing clothes of sick persons with others.

 

2019 KCSE Home Science paper 2 marking scheme

  1. (a) Work well pressed (1) and folded(½).
    (b) Label(½) firmly sewn (1) without concealing details(½) and on a single fabric (½).
    (c) Pins/needles(½) unnecessary tacking threads(½) and loose threads (½) removed.
    (d) Made up for the left half (1).

 

8. (a) Waist band edge made with straight stitchery (1) and seam allowance
See through the light evenly trimmed ( 1)
(b) Waist band well knife-edged (1)
(c) CB end well-finished(½) with straight stitchery(½) and a pointed comer(½)
(d) Waistband attached with straight (1) stitchery and edge tops stitched (1) and seam not trimmed (1) (see through light)
(e) Raw edges well tucked under on W. S. ( 1) and waist band held down with straight tacking stitches (1)
(f) Half of the back waistband finished with hemming stitches (2) and tacking stitches not removed(½)
(g) Evenness of width of waistband on RS (1) and W.S (1)
(h) Correct width of waistband 3cm to within 2mm (2.8cm to 3.2cm) (1 x2)
(i) Flatness of waistband WS (1) and RS (1)

2019 KCSE Art and Design paper 1 marking scheme

1. (a) Definition of the term art;

Art is a form of communication where an artist uses skills and imagination to express their feelings, thoughts and observations and use them to create aesthetic objects, environments or experiences through drawing, painting, sculpture etc.

(b) Two characteristics of line that convey a specific mood are its;
• direction or movement,
• Quality or weight.
( c) Three contrasts between the elements shape and form;

2019 KCSE Agriculture paper 1 marking scheme

  1. – Rainfall distribution/pattern
    – Rainfall amount
    – Rainfall reliability
  2. – T e type o crop to e grown
    – Type of implement used
    Soil moisture content
    – Presence of hard pans
    – Presence of underground obstacles
    – Type of soil
  3. Feed matena eaten y t e Amma Species of the Animal
    Type of bedding material/litter used- Method of storage
    – Age of the farm yard manure
    – Age of the Animal which produces the waste materials Type of animal

 

2019 KCSE Agriculture paper 2 marking scheme

1

– Irritation
– Anaemia
– Wounds/damage on the skin/swellings/injuries
– Damaged/raffled feathers
– Retarded growth

 

2.

(a) – Jersey
– Guernsey
(b) – Friesian/holstein
– Ayrshire

3.

– Through injections
– Orally through the mouth
– Through the nose/inhalation
– Through the cloaca
– Through the eye/ occular

4.

– Large animals
– Young animals
– More active animals
– Highly productive (yielding) animals

5.

– Food fermentation
– Synthesis of vitamins(K and B Complex)
– Synthesis of amino acids
– Breakdown of proteins to peptides, amino acids and ammonia
– Breakdown of cellulose and carbohydrates to carbon dioxide and volatile fatty acids.

6.

– Honey badger
– Bee louse
– Wax moth
– Ants

2019 KCSE Woodwork paper 1 marking scheme

1. (a) Workshop safety:

Machine layout.
Layout of workbenches.
Escape route.
Tidiness.
Non-slippery floor.
Position of doors.

 

2019 KCSE Metalwork paper 1 marking scheme

1 a)

– One should keep the employer’s needs in mind by noting the
type of a person he requires, the kind of work experience, and the qualifications required for the job
– The job requirements should be analyzed carefully and compared with personal experience, achievements, and qualifications
– One should not apply for a job he is not qualified for eg if the needed person should be specialized in forge work, there would be no need of applying if one has just left school
– Exaggerated credentials and work performance will only create suspicion to the employer, and should be discouraged.

(b) – Delimiting a pool of potential employees within the total force by
stating the minimum requirements in the advertisement

– Further short listing so as to eliminate those with minimum requirements, and so remain with the top cream
– Interviewing the short listed group
– On the job training, to sharpen the skills of the selected lot

2 a)

– The gap between the work rest and the grinding wheel face should always be kept to minimum
– The guards must be securely fixed
fo No adjustment should be done on the grinding machine when the wheels are in motion
– Do not use the grinding wheel if it has a crack.
fo Wear safety goggles for eye protection

 

Marking scheme for 2019 KCSE is available in complete and better format after payment of Kshs 200 to 0720502479. Delivery is through email.

Exit mobile version