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- Using reagents provided, explain how you could prepare dry zinc carbonate solid.
Zinc powder, dilute nitric (V) acid, Water and Solid sodium carbonate(Solved)
Using reagents provided, explain how you could prepare dry zinc carbonate solid.
Zinc powder, dilute nitric (V) acid, Water and Solid sodium carbonate
Date posted: August 14, 2019.
- A transistor is connected in common emitter (CE) configuration in which collector supply is 8V and the voltage drop across resistance RC connected in the...(Solved)
A transistor is connected in common emitter (CE) configuration in which collector supply is 8V and the voltage drop across resistance RC connected in the collector circuit is 0.5V. The value of RC = 800 ohms. If α = 0.96, determine:
(i) collector-emitter voltage
(ii) base current
Date posted: August 14, 2019.
- Rewrite the following sentences according to the instructions given. (Solved)
Rewrite the following sentences according to the instructions given.
a) If he comes he will not be punished.
Begin: Unless…………………………
b) The snail reached the ark only by perseverance
Begin: Only……………
c) They had just walked out of the building when the bomb went off.
(Begin: No sooner …………………
d) John told the principal that he needed to go and see the nurse because he was feeling unwell.
(Rewrite as direct speech)………………
e) These books belong to the daughters of our teacher.
(Begin: These are ………………..
Date posted: August 14, 2019.
- The length of a room is 3m loner than its width. A carpet whose area is 18m2 is laid in the middle of the room...(Solved)
The length of a room is 3m loner than its width. A carpet whose area is 18m2 is laid in the middle of the room leaving a margin of 0.5m wide between the carpet and the wall all round the room.
a) If the width of the room is x, write an expression for the dimensions of the carpet in terms of x.
b) Express the area of the carpet in terms of x
c) Determine the dimensions of the room.
d) Determine the space between the carpet and the wall is covered by a material which costs sh 245 per square metre. Find the cost of the material required.
Date posted: August 14, 2019.
- In an experiment, iron was heated in the presence of excess oxygen and the following data was obtained.(Solved)
In an experiment, iron was heated in the presence of excess oxygen and the following data was obtained:
Mass of empty crucible = 10.98 g
Mass of crucible + iron before reaction = 12.66 g
Mass of crucible + iron after heating = 13.30 g
Calculate the empirical formula of the oxide of iron. (Fe =56, O = 16)
Date posted: August 14, 2019.
- Read the following oral poem and answer the questions that follow.(Solved)
Read the following oral poem and answer the questions that follow.
Oh beautiful bride, don’t cry,
Your marriage will be happy,
Console yourself, your husband will be good.
And like your mother and your aunt,
You will have many children in your life,
Two children, three children, four……………..
Resign yourself do like all other,
A man is not a leopard,
A husband is not a thunderstruck,
Your mother was your father’s wife,
It will not kill you to work.
It will not kill you to grind the grain
Nor will it kill you to wash the pots
Nobody dies from gathering firewood
Nor from washing clothes.
We did not do it for you,
We did not want to see you go,
We love you too much for that
Its your beauty that did it
Because you are so gorgeous
Ah, we see you laugh beneath your tears!
Goodbye, your husband is here
And already you don’t seem
To need our consolations.
Questions
a) With evidence, classify the oral poem.
b) Who do you think are the singers of the song? Illustrate.
c) How do the singers make the situation bearable for the lady?
d) What is the attitude of the society from which the song is derived towards women?
e) Illustrate and explain the use of the following stylistic devices in this oral poem.
i) Repetition –
ii) Ellipses –
f) State in note form the duties of a wife according to the song.
g) Explain any social aspect and one economic activity carried out in the commodity from which the oral poem is taken
h) Explain the irony in the 7th stanza.
Date posted: August 14, 2019.
- For a transistor, ß = 45 and voltage drop across 1 kilo-ohm which is connected in the collector circuit is 1 volt.(Solved)
For a transistor, β = 45 and voltage drop across 1 kilo-ohm which is connected in the collector circuit is 1 volt. Find the base current for common emitter connection.
Date posted: August 14, 2019.
- The table below shows the length of 40 carrot seedlings.
a) Determine the;
i) Modal class.
ii) Median class.
b) calculate;
i) The mean length of the seedlings.
ii)...(Solved)
The table below shows the length of 40 carrot seedlings.
a) Determine the;
i) Modal class.
ii) Median class.
b) calculate;
i) The mean length of the seedlings.
ii) The median of the seedlings.
Date posted: August 14, 2019.
- Read the following excerpt then answer the questions that follow.(Solved)
Read the following excerpt then answer the questions that follow.
Krogstad : Are you sure of that?
MrsLinde : Quite sure, but –
Krogstad: (with a searching look at her) Is that what it all mean? That you want to save your friend at any cost? Tell me frankly. Is that it?
Mrs Linde: Nils, a woman who has once sold herself for another’s sake doesn’t do it a second time.
Krogstad: I will ask for my letter back.
Mrs Linde: No, no.
Krogstad: Yes, of course I will. I will wait here until Helmer comes; I will tell him he must give me my letter back-that it only concerns my dismissal-that he is not to read it.
Mrs Linde: No Nils, you must not recall your letter.
Krogstad: But, tell me wasn’t it for that very purpose that you asked me to meet you here?
Mrs Linde: In my first moment of right, it was. But twenty-four hours have elapsed since then, and in that time I have witnessed incredible things in this house. Helmer must know all about it. This unhappy secret must be disclosed; they must have a complete understanding between them which is impossible with all this concealment and falsehood going on.
Krogstad: very well, if you take the responsibility. But there is one thing I can do in my case and I shall do it at once.
Mrs Linde: (listening) You must be quick and go! The dance is over, we are not safe a moment longer.
Krogstad: I will wait for you below
Mrs Linde: Yes, do. You must see me back to my door.
Krogstad: I have never had such an amazing piece of good fortune in my life!
Questions
1. Explain what happens before this excerpt.
2. Why does Krogstad say he would ask for his letter back? Explain.
3. Identify and explain the dominant theme in the excerpt.
4. 'Nills, a woman who has once sold herself for another sake doesn’t do it a second time'. Briefly explain what makes Mrs Linde say this?
5. Explain the use of irony in this excerpt.
6. Identify and illustrate two character traits of Mrs Linde in this excerpt.
7.' I have never had such amazing piece of good fortune in my life!' Rewrite beginning never…………………
8. What makes Krogstad say that he has never had such good fortune in his life?
9.'But there is one thing I can do in any case and I shall do it at once.' What is that
Krogstad does and how does it affect the rest of the play?
10. Explain the meaning of the following words and phrases as used in the passage.
i) At any cost –
ii) Recall –
iii) Elapsed –
iv) Incredible things –
Date posted: August 14, 2019.
- Find the a rating of the transistor shown in Fig. 4.20. Hence determine the value of IC using both a and ß rating of the...(Solved)
Find the α rating of the transistor shown in Fig. 4.20. Hence determine the value of IC using both α and β rating of the transistor.
Date posted: August 14, 2019.
- Calculate IE in a transistor for which ß = 50 and IB = 20 µA.(Solved)
Calculate IE in a transistor for which β = 50 and IB = 20 μA.
Date posted: August 14, 2019.
- If a and b are as given below,find the scalars m and n if the condition below is true.
(Solved)
If a and b are as given below,find the scalars m and n if the condition below is true.
If 
Date posted: August 14, 2019.
- Find the value of ß if;
(i) a = 0.9
(ii) a = 0.98
(iii) a = 0.99.(Solved)
Find the value of β if;
(i) α = 0.9
(ii) α = 0.98
(iii) α = 0.99.
Date posted: August 14, 2019.
- Read the passage below and answer the questions that follow.(Solved)
Read the passage below and answer the questions that follow.
Substance Abuse has emerged in recent decades as a major concern both on and off the job. Although reasons vary, substance abuse can be a way that some people try to manage or reduce distress.
But it is important to be clear on what is generally meant by a drinking problem. In all cases related to alcohol abuse, a common factor is the unfavorable effect alcohol has on the health or well-being of the drinker and his or her associates. Common signs and symptoms that frequently indicate a drinking problem include being constantly absent from work, causing on-the-job accidents and expressing grievances most of the time.
Alcoholic employees can sometimes go undetected for years. Coworkers cover up for those unable to perform their jobs because of drunkenness. Even managers may be adept at concealing their alcohol abuse problems. Their secretaries or loyal associates may cover up for them. Alcoholics can be clever at inventing “credible” excuses when detected: “I must have a drink or two when I’m entertaining customers, of course.”
Drug abuse, or drug addiction, exists when the taking of drugs, whether prescribed or non-prescribed, legal or illegal, causes difficulties in any area of an individual’s life. Years ago, the stereotype of the drug user was either of a glazed-eyed musician frantically beating his sticks on a tight skin or a person who dwelt in a slum. Mass publicity on drug abuse has long since caused that stereotype to fade from view.
Complicating the ongoing war on drugs are changes in public attitudes and drug-use patterns. It sometimes seems that no sooner is progress made in combating one illegal drug than a different kind of substance abuse comes into vogue. Ethyl alcohol was the social drug during prohibition (1920 – 1933), marijuana became the social drug of the 1960s and 1970s, and some observers believe that crack cocaine and possibly ectasy – another so-called upper – became the social drugs of the 1980s and 1990s. the drugs of choice and people’s attitude toward them may change, but the problem of drug abuse appears to be continuing unabated.
Pinpointing the specific symptoms of alcohol and drug abuse problems is not a simple task. A supervisor’s main responsibility, therefore should not necessarily be uncovering evidence of dependency on alcohol and drugs but instead being observant for declining job performance. Yet there are certain behavioural patterns that some excessive users of alcohol and drugs display. These patterns can sometimes be spotted through simple observation. Increasingly though, employers are taking more aggressive steps to ferret out substance abuse among their workforces. A growing number of companies, especially large ones with many employees and those in business with potential to effect public health or safety, are adopting drug-testing programmes.
The signs of alcohol dependency, unfortunately, do not always become manifest until the middle of the late stages of the problem. No wonder some managers have mistaken an employee’s euphoric appearance for the “look of love”. The earlier treatment begins, naturally, the earlier treatment begins, naturally, the easier it will be. A person could experience some isolated incidents of such drinking problems without necessarily being a alcoholic. However, alcohol abuse usually results in declining job performance.
Because there are many symptoms of drug abuse, no one person would exhibit all of them and a supervisor should guard against assuming that the presence of one or more symptoms is conclusive of alcohol or drug abuse.
Questions
1. What is the main reason given for substance abuse?
2. From paragraph two, state three ways in which alcohol abuse can unfavourably affect the workmates of a drunker?
3. According to the passage, what is drug abuse?
4. What was the common misconception about who a drug user was?
5. Rewrite the following sentences using “as soon as”
It sometimes seems that no sooner is progress made in combating one illegal drug than a different kind of substance abuse comes into vogue.
6. What can we infer about “prohibition”?
7. In not more than 55 words, summarize the reasons that make it difficult to effectively deal with substance abuse.
8. Why do you think the author of the passage cautions supervisors against hastily concluding that one is a drug abuser?
9. Explain the meaning of the following words as used in the passage.
i) Credible
ii) Stereotype –
Date posted: August 14, 2019.
- Below is a list of oxides.(Solved)
Below is a list of oxides.
Select:
(a) A neutral oxide
(b) A highly water soluble basic oxide.
(c) An oxide which can react with sodium hydroxide and dilute hydrochloric acid.
Date posted: August 14, 2019.
- Explain the Common Emitter Connection in transistors(Solved)
Explain the Common Emitter Connection in transistors
Date posted: August 14, 2019.
- Find the equation of a perpendicular bisector to line AB given that A (2, 3) and B (-6, 5). Give your answer in the form...(Solved)
Find the equation of a perpendicular bisector to line AB given that A (2, 3) and B (-6, 5). Give your answer in the form y = mx + C.
Date posted: August 14, 2019.
- Fill in the gaps using the present perfect form of the verbs in brackets.(Solved)
Fill in the gaps using the present perfect form of the verbs in brackets.
i) I ………………………………………………………… (visit) many places.
ii) My wife ……………………………………………………… (join) me in most of these trips.
Date posted: August 14, 2019.
- Add an appropriate question tag to each of the following statements.(Solved)
Add an appropriate question tag to each of the following statements.
i) They aren’t serious.
ii) He bought a new house last month.
iii) Let us go
Date posted: August 14, 2019.
- On a day when the currency exchange rate was 100 Japanese Yen = Ksh 72.50 a Japanese tourist exchanged all his money and received Ksh....(Solved)
On a day when the currency exchange rate was 100 Japanese Yen = Ksh 72.50 a Japanese tourist exchanged all his money and received Ksh. 34,800. If the bank charged him a commission of 4% on the transaction, calculate the number of Japanese Yen he exchanged.
Date posted: August 14, 2019.
- In the diagram below, ABCD is a parallelogram AD is produced to E and BE and CD meet at F.If o and (Solved)
In the diagram below, ABCD is a parallelogram AD is produced to E and BE and CD meet at F.
If o and o, find the size of angle ABF.
Date posted: August 14, 2019.
- Combine each of the following pairs of sentences by making one of them a relative clause.
(Solved)
Combine each of the following pairs of sentences by making one of them a relative clause.
i) Kasoha joined our school this term. She is very good at grammar.
ii) The generator had been on the whole night. It broke down in the morning.
Date posted: August 14, 2019.
- List the Transistor Connections or configurations(Solved)
List the Transistor Connections or configurations
Date posted: August 14, 2019.
- Rewrite the following sentences avoiding repetition. (Solved)
Rewrite the following sentences avoiding repetition.
i) Always be frank and open with your friends. When you are frank and open to your friends, you willwin your friends trust and confidence.
ii)Help yourself to some oranges. These oranges are sweet but those oranges are sweeter.
Date posted: August 14, 2019.
- Rewrite the sentences below according to the instructions given after each.(Solved)
Rewrite the sentences below according to the instructions given after each.
i) My father would not allow us to attend night parties under any circumstances.
(Begin: Under no circumstances ……………………………….)
.
ii) Strangers should not be allowed into the compound without the security officer’s permission. (Begin: On no account……..……………………..)
iii) The plane had just taken off when one of the passengers began to scream.
(Begin: Scarcely ……………..….)
Date posted: August 14, 2019.
- The interior angle of a regular polygon is 20o more than three times the exterior angle. Determine the number of sides of the polygon.(Solved)
The interior angle of a regular polygon is 20o more than three times the exterior angle. Determine the number of sides of the polygon.
Date posted: August 14, 2019.
- An oxide of Nitrogen was bubbled into a solution of sodium hydroxide in which phenolphthalein indicator has been added. The solution turned colourless after sometime.(Solved)
An oxide of Nitrogen was bubbled into a solution of sodium hydroxide in which phenolphthalein indicator has been added. The solution turned colourless after sometime.
(a) Name the oxide.
(b) Write an ionic equation for the reaction that took place.
Date posted: August 14, 2019.
- Complete the following sentences by choosing the appropriate expressions to fill the gaps. (Solved)
Complete the following sentences by choosing the appropriate expressions to fill the gaps.
i) Although Nduati is a great friend of mine, I ………………………………………..him on a few important issues. (differ to, differ with)
ii) As good citizens, we must all pay our taxes ………………………………………..the policy. (in accordance to, in accordance with)
iii) She chose her career ………………………………………………..(independent of, independent to )her father’s influence.
Date posted: August 14, 2019.
- A common base transistor amplifier has an input resistance of 20 ohms and output resistance of 100 kilo-ohms.(Solved)
A common base transistor amplifier has an input resistance of 20 ohms and output resistance of 100 kilo-ohms. The collector load is 1 kilo-ohm. If a signal of 500 mV is applied between emitter and base, find the voltage amplification. Assume aac to be nearly one
Date posted: August 14, 2019.
- Read the poem below and then answer the questions that follow.
No coffin, no grave by Jared Angira
(Solved)
Read the poem below and then answer the questions that follow.
No coffin, no grave by Jared Angira
He was buried without a coffin
Without a grave
The scavengers performed the post-mortem
In the open mortuary
Without sterilized knives
In front of the night club
Stuttering rifles put up
The gun salute of the day
That was a state burial anyway
The car knelt
The red plate wept, wrapped itself in blood its
master’s
The diary revealed to the sea
The rain anchored there at last
Isn’t our flag red, black and white?
So he wrapped himself well
Who could signal yellow
When we had to leave politics to the experts
And brood on books
Brood on hunger
And schoolgirls
Grumble under the black pot
Sleep under torn mosquito net
And let lice lick our intestines
The lord of the bar, money speaks madam
Woman magnet, money speaks madam
We only cover the stinking darkness of the cave of our mouths
And ask our father who is in hell to judge him
The quick and the good.
Well, his diary, submarine of the Third World
War
Showed he wished
To be buried in a gold-laden coffin
Like a VIP
Under the jacaranda tree beside his palace
A shelter for his grave
And much beer for the funeral party
Anyway one noisy pupil suggested we bring
Tractors and plough the land.
(From Poems from East Africa, D. Cook andD. Rubadiri (Eds,): East African EducationalPublishers)
a) Briefly explain what this poem is about.
b) Explain the use of onomatopoeia in the poem.
c) Identify and explain the tone of the poem.
d) Comment on the central theme of the poem.
e) Explain the meaning of the following lines:
i) who could signal yellow
ii) submarine of the Third World War
f) How else can people bring change in society without assassinating politicians?
g) Explain the meaning of the following words as used in the poem
i) Anchored
ii) Brood
Date posted: August 14, 2019.