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The following set-up was used by a student to determine the relative density of a cork
During the experiment, the following measurements were taken:-
- Weight of sinker in water = w1
- Weight of sinker in water and cork in air = w2
- Weight of sinker and cork in water = w3
(i) Write an expression for the up thrust on cork
(ii) Write an expression for the relative density of the cork
Date posted:
September 9, 2019
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The graph shows how extension e of a helical spring varied with load, hanging on it. (cm).Determine from the graph, the proportionality constant of the spring.
Date posted:
September 9, 2019
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6.95g of hydrated iron (II) sulphate FeSO4. nH2O was dissolved in 250 cm3 solution resulting into a 0.1M solution.
Determine the value of n. (Fe = 56, O = 16, S = 32, H = 1).
Date posted:
September 9, 2019
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A body of mass 4.0 kg held at a vertical height of 500cm is released to travel along a frictionless curved path as shown in the figure below.The 4.0kg mass strikes body of mass 6.0kg at rest immediately it reaches the horizontal. The bodies stick together and move in the same direction. Determine the velocity of the bodies immediately after collision.
Date posted:
September 9, 2019
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The figure below shows a simple pendulum of length 80 cm. the pendulum bob whose mass is 50 g oscillates between points A and B, through its rest position C. A and B are both 10 cm higher than C.
(a) State the form of energy possessed by the pendulum bob at point A
(b) Determine
(i) The velocity of the bob at point C
(ii) The tension in the string as the bob passes point C
(Take acceleration due to gravity g=10m/s2
Date posted:
September 9, 2019
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The figure below shows an inclined plane and a load of mass 15kg pulled by an effort of 100N.Find the efficiency of the machine.
Date posted:
September 9, 2019
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The figure below shows a U-tube manometer containing a gas, mercury and water. Calculate the gas pressure acting on the mercury. (Take atmospheric pressure to be 1.05 x 105 pa, density of mercury and water to be 13600kg/m3 and 1000kg/m3 respectively).
Date posted:
September 9, 2019
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Starting with lead oxide, describe how a pure sample of lead carbonate can be prepared in the laboratory.
Date posted:
September 9, 2019
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Describe the chemical test that can be used to distinguish sodium sulphate from sodium sulphite.
Date posted:
September 9, 2019
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The figure below shows an electromagnetic relay being used to switch an electric motor on and off. The electromagnet consists of a coil of wire wrapped around a core. The motor in figure is switched off.
(a) Suggest suitable material for the core.
(b) What happens to the core when switch S is closed?
(c) Why do the contacts A and B close when the switch S is closed.
(d) When the switch S is opened, what will happen to;
(i) The core
(ii) Soft iron armature.
Date posted:
September 9, 2019
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The figure below shows a circuit with resistors and voltmeter connected to a battery.
(i) If each cell has an internal resistance of 0.7 ohms, determine the total resistance in the circuit.
(ii) What amount of current flows through the 3 ohms resistor when the switch is closed?
(iii) What is the reading of the voltmeter when the switch S is
(I) Open
(II) Closed
(iv) Account for the difference between the answers in (I) and (II) above.
Date posted:
September 9, 2019
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Give two meanings from each of the sentences below.
i. "Did you see the girls with a telescope?"
ii)John rode a bicycle by the bank.
Date posted:
September 7, 2019
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Explain the ambiguity in each these sentences.
i)We saw her duck
ii)The lioness took the cub away using its tail.
Date posted:
September 7, 2019
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Rewrite the following sentences correcting the error without changing the meaning.
1.Jairo is more better educated than Saisi.
2. He has the tendency of visiting people late hours.
3. When she came in, it was all calm but all over a sudden the house became noisy.
4. We returned back to school before 7.00 P.M.
5. I wish I was as well prepared for K.C.S.E as you.
6.The news are in television.
7.He got married with a Nigerian last year.
8.The student knocked on the door continuously as the others watched.
9. The child inflated the balloon too much that it burst.
10. I have a problem to memorizing people’s names.
Date posted:
September 7, 2019
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Rewrite the following sentences correcting the error without changing the meaning.
a) The dog has broken it’s leg.
b) Jane is the smaller of the five sisters.
c) Everyone except the two boys and I was disqualified.
d) The teacher gave us a humble time.
e) She does not reply to peoples letters.
f) The students pushed their bus when it stuck in the mud.
g) Please don’t dirtify the class.
h) He hanged his trousers under the sun.
i) I’m not understanding what you are talking about.
j) There are situations of which you need to act with speed or else the consequences
will catch up with you.
k) Our guidance and counselling teacher give as sound advice.
l) Musau used his fullscap upside down.
m) It is too bad for one to loose his or her pen during exams.
n) He is looking for an employment in Nairobi.
o) This exercise comprises of rigorous training in the morning.
p) Sometimes last year, we agreed to improve our relationship with our neighbors.
q) If I was a surgeon, I would have treated the patient.
r) The hungry children entered into the dining room.
s) I cannot be able to operate this machine.
t) She likes football as it is more superior than hockey.
u) He is looking for an employment in Nairobi.
v) If today was Sunday, I would have gone to church.
Date posted:
September 7, 2019
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Distinguish between gerunds and participles in the following sentences.
i)They kept me waiting for hours.
ii)Hunting game is banned in this country.
Date posted:
September 7, 2019
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Rewrite the following sentences turning the underlined words into participle phrases.
i. As he had witnessed the crime, he was summoned to give evidence in 120 court.
ii)Now that I have listened to your story, I am more inclined to agree with you
Date posted:
September 7, 2019
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Put the verbs in brackets in the gerund or the to-infinitive.
i. I can’t imagine Peter ....................(go) by bike.
ii. He agreed ...................(buy) a new car.
iii. I look forward to ................ (see) you at the weekend.
Date posted:
September 7, 2019
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Answer the following questions according to the instructions given after each.Do not change the meaning.
a) No one likes to be sick. (change the infinitive into a gerund)
b) I saw the giraffe when I was walking to school. (Rewrite using the present participle)
c) The jet circled the town. It scared the residents. (Combine into one sentence using a participle)
d) Many students benefit if they read in the morning. (Rewrite using a gerund)
e) It is bad manners to smoke in a crowded place. (Rewrite using a gerund).
f) The teacher was annoyed by the students. He punished them severely. (rewrite using past participle)
g) The small boy asked for a straw to drink his juice. (Rewrite using "drinking")
Date posted:
September 7, 2019
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Combine the following pairs of sentences using a participle.
a) The street Urchin was clobbered. He cried out for mercy.
b) The child was fed and changed. She slept soundly.
c) The police surrounded the gangsters’ house. He shot in the air to scare them away.
d) Jeff was bored of my nagging. He moved out of the house.
e) The President cheered the team. He was excited.
f) The soldiers left the war-torn region. Peace had been restored.
Date posted:
September 7, 2019
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This is the boy. His father is a generous man. (Join into one sentence using a relative pronoun)
Date posted:
September 7, 2019
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Correct the pronoun errors in the following sentences.
(i) Our mother won’t like us going home late.
(ii) Please forgive me asking such a personal question.
(iii) I just can’t stand you wanting to stay in such a relationship.
Date posted:
September 7, 2019
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Choose the correct pronoun from the brackets to complete the following sentences.
1.Mr. Kamau and _______________ visited us last year. (he/him/himself)
2. John offered Njoroge and ________________some biscuits. (I/me)
3. Do you think that he is wiser than _________________. (I/me)
4. Walter and _______________ (me, I) wrote the article.
5.How can you be so sure it was______________? (they, them)
6. She knew all about my friend and ............................................................. (I, me)
7. What would you do if you are ............................................................... ? (She / her)
8. David and ...................................................... went to the library. (I, me)
9. The teacher asked Musyoki and .............to do it. (Me, I)
10. It is.............................. (they/them) who assisted the accident victims.
11. William is not as tall as...............................(I, me)
12. Between you and ..........................(me/ I) who is taller?
13. Rose and ........................................... (she/ her) left for Nairobi.
14. The winners are Arendi and................................ (her/ she)
Date posted:
September 7, 2019
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For each of the following sentences, replace the underlined phrasal verb with one word which has the same meaning.
i) His performance did not measure up to the expected standards.
ii) It’s not good to walk out on one’s family.
iii) The taxi pulled up at the gate.
iv) The chairperson called off the meeting.
v) The principal said that he could not put up with hooligans in the school.
vi) It is wrong to look down on students from other schools.
vii) Teachers should not give in to their students’ unreasonable demands.
viii) The delegates came up with ten rules to guide our response to globalization.
ix) The rude guest kept breaking in on our conversation.
x) His building project has really eaten into my savings.
xi) The Principal hasn’t managed to win them over yet.
Date posted:
September 7, 2019
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Replace the words in underline with suitable phrasal verbs.
(i) The board refused to honour my request.
(ii) The employer was disappointed by the lazy workers.
(iii) The dog attacked the stranger the moment the gate was opened.
(iv) The patient recovered from his injuries sooner than we expected.
(v) Wafula became sick with fever after he was bitten by a mosquito.
(vi) The school programme has been altered.
(vii) The fierce dog attacked the stranger.
(viii) The fire brigade failed to extinguish the raging fire.
(ix) After eating pork, Marcy developed a rash.
(x) The nurse couldn’t tolerate the noisy patient.
(xi) The researchers tested the new drug on mice.
(xii) The athlete regained consciousness after lying in the field for three hours.
(xiii) It is not good to despise other people.
(xiv) I am currently living with my brother in Karen.
(xv) The principal was annoyed with the three boys.
(xvi) The messengers began their journey at dawn.
(xvii) The film studio is being accused of exploiting the singer’s death.
(xviii) She ensured that everybody got something to eat and drink.
Date posted:
September 7, 2019
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Fill in the following blank spaces with phrasal verbs formed from the words given in brackets.
(i) I am ...................................your visit.(look)
(ii) Mary...............the job offered to her at Kenya Airways.(turn)
(iii) The school does not .....................that type of behavior. (stand)
(iv) I was _______by his childish behavior during the academic parade. (take)
(v) The new students could not ____________ their way to the dormitory. (make)
(vi) He tried all his dirty tricks on us but he did not succeed .(come)
(vii) She looked carefully at the document but couldn’t __________________ what it meant (make)
(viii) The teacher couldn’t __________________ the students’ bad behavior. (put)
(ix) Please ___________________ that all the chairs are in good condition. (See)
(x) The boy actually ______________________ his father (take)
Date posted:
September 7, 2019
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Replace the underlined words with a suitable phrasal verb.
(i) You do not have to tell me exactly what to do. (spell)
(ii) The teacher reprimanded the errant student. (tell)
(iii)I cannot tolerate Becky’s ill manners. (put)
(iv) The class teacher promised to solve the problem.(sort)
_
(v) I have left the relationship because she is unfaithful. (walk)
(vi) What a relief that Joan passed all her exams. (get)
(vii) The latest achievement deserves a celebration. (call)
(viii) The patient regained consciousness at 2pm (come). came to
(ix) I will work hard to compensate the wasted time. (make)
(x) My mother scolded me because I had not done the assignment. (tell)
(xi) The dog attacked the stranger the moment the gate was opened. (go)
(xii) The patient recovered from his injuries sooner than we expected. (get)
(xiii) Linet was deceived by the smartly dressed man. (take)
(xiv) The class teacher entered the classroom and caught us making noise. (burst)
(xv) His mother looked at him angrily, turned and left. (storm)
(xvi) After the attack, she discovered that the thugs had escaped with her expensive
watch. (make) made away with
(xvii) I was excited when I accidentally met an old friend in town. bumped into/ran into
Date posted:
September 7, 2019
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A transformer has 200 turns in the primary coil and 1000 turns in the secondary coil. The primary coil is connected to an a.c source producing 100 V and rated 500 W. The current delivered by the secondary circuit was found to be 0.95 A.
(i) Determine the efficiency of this transformer.
(ii) Explain why the efficiency is less than 100%.
Date posted:
September 6, 2019
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A bar magnet is pushed into a coil as shown in the figure below.
Explain what happens to the pointer of the galvanometer when the magnet is:
(i) Moved into the coil rapidly?
(ii) Remains stationary inside the coil?
Date posted:
September 6, 2019
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An electric kettle is rated at 1.8 kW, 240 V. Explain the choice of the safest fuse for the kettle. (the available fuses are 5 A, 10A, and 20 A)
Date posted:
September 6, 2019