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- In order to prepare hydrogen gas in the laboratory a student set-up the apparatus shown in the diagram below. Study it and answer the questions...(Solved)
In order to prepare hydrogen gas in the laboratory a student set-up the apparatus shown in the diagram below. Study it and answer the questions that follow.
(a) Suggest why the student did not collect hydrogen gas.
(b) In a separate experiment the student reacted iron and hydrochloric acid to prepare hydrogen gas.
(i) Write an ionic equation for the reaction.
(ii) The hydrogen gas produced was found to have a foul smell. Suggest an explanation for this.
Date posted: September 3, 2019.
- Give four reasons that make insurance companies decline to insure acts of nature.(Solved)
Give four reasons that make insurance companies decline to insure acts of nature.
Date posted: September 3, 2019.
- Study the structure below.
C3H7COOC2H5
(a) Name the compound
(b) Name the compounds used to prepare the above compound.
(c) What is the identifying physical property of...(Solved)
Study the structure below.
C3H7COOC2H5
(a) Name the compound
(b) Name the compounds used to prepare the above compound.
(c) What is the identifying physical property of the above compound?
Date posted: September 3, 2019.
- A milk vendor bought 20 litres of milk at Ksh.15 per litre and added 5 litres of water to the milk.(Solved)
A milk vendor bought 20 litres of milk at Ksh.15 per litre and added 5 litres of water to the milk. If he
sold the mixture at Ksh.18 per litre, what was the percentage profit.
Date posted: September 3, 2019.
- The figure below shows the graph of velocity Vm/s against time t seconds of a car. (Solved)
The figure below shows the graph of velocity Vm/s against time t seconds of a car. If the car traveled a
distance of 32 metres, in the first four seconds, calculate the average velocity for the whole journey.
Date posted: September 3, 2019.
- Study the flow chart below and answer the questions that follow.(Solved)
Study the flow chart below and answer the questions that follow.
(a) Write the formula of the anion present in solid N.
(b) Solid N in the flow chart above burns in air with a red flame. Identify the
(i) Cation present in solid N
(ii) Metal oxide L
Date posted: September 3, 2019.
- Find the integral values of x which satisfy the simultaneous inequalities.(Solved)
Find the integral values of x which satisfy the simultaneous inequalities.
3x-2<10+x <10+x
Date posted: September 3, 2019.
- Study the table below and answer the questions that follow.(Solved)
Study the table below and answer the questions that follow.
(a) Write the electronic arrangement of elements. X and Y
(b) Write the formula of the compound that would be formed between X and Y.
Date posted: September 3, 2019.
- A sector of a circle of radius 10cm has an arc that subtends an angle of 270o at the centre.(Solved)
A sector of a circle of radius 10cm has an arc that subtends an angle of 270o at the centre.
Calculate the vertical height of the cone formed by the sector.
Date posted: September 3, 2019.
- In the figure below MPN is a tangent to the circle at P. Find ?SPQ and ?NPQ, stating your reasons. (Solved)
In the figure below MPN is a tangent to the circle at P. Find angle SPQ and angle NPQ, stating your reasons. Angle SRQ=120o and angle PQR=62o
Date posted: September 3, 2019.
- Rewrite the underlined phrasal verbs with appropriate verbs in each sentence.(Solved)
Rewrite the underlined phrasal verbs with appropriate verbs in each sentence.
i) Juma’s performance did not measure upto the expected standards.
ii) Mary walked out on her family
Date posted: September 3, 2019.
- Choose the correct alternative from the words given in brackets after each sentence.(Solved)
Choose the correct alternative from the words given in brackets after each sentence.
i) The boys left........................................................ (their, there) books in the field.
ii) All matatus have hiked the............................................... (fair, fare)
Date posted: September 3, 2019.
- Element R – 238 decays in series forming different nuclides as shown below.(Solved)
Element R – 238 decays in series forming different nuclides as shown below.
(i) Identify the type of decay X and Y
(ii) Give one use of radioactive isotopes in medicine
Date posted: September 3, 2019.
- Identify the silent letters in the following words .(Solved)
Identify the silent letters in the following words .
i. Debut ...................
ii. Chassis ....................
iii. Crochet ..............
v Rendezvous .............
iv. Poignant.........................
Date posted: September 3, 2019.
- For each of the following words provide a word pronounced in the same way.(Solved)
For each of the following words provide a word pronounced in the same way.
i. bury ........................
ii. gate ........................
iii. cruise ..........................
iv. taught ...............
Date posted: September 3, 2019.
- The following is a cash book that was extracted from Manyatta traders for the month of February 2009.
Describe the transactions which took place on the...(Solved)
The following is a cash book that was extracted from Manyatta traders for the month of February 2009.
Describe the transactions which took place on the dates given below.
i) February 1
ii) February 12
iii) February 15
iv)February 26
Date posted: September 3, 2019.
- Read the excerpt below and answer questions that follow.(Solved)
Read the excerpt below and answer questions that follow.
Mrs. Linde: Nora-it was Krogstad who lent you the money!
Nora: Yes, and now Torvald will know all about it.
Mrs. Linde: Believe me, Nora, that’s the best thing for both of you.
Nora: You don’t know all. I forged a name.
Mrs. Linde: Good heavens-!
Nora: I only want to say this to you, Christine- you must be my witness.
Mrs. Linde: Your witness? What do you mean? What am I to -?
Nora: If I should go out of my mind-and it might easily happenMrs. Linde: Nora!
Mrs. Linde: Nora! Nora! You are quite out of your mind.
Nora: And if it should happen that there were someone who wanted to take all the responsibility,
all the blame, you understandMrs. Linde: Yes, yes- but how can you suppose-?
Nora: Then you must be my witness, that it is not true, Christine. I am not out of my mind at all; I
am in my right senses now, and I tell you no one else has known anything about it; I and I alone,
did the whole thing. Remember that.
Mrs. Linde: I will, indeed. But o don’t understand all this.
Nora: Or if anything else should happen to me- anything, for instance, that might prevent my being here-
Questions
i) Briefly explain what has happened before this extract.
ii) 'Nora- it was Krogstad who lent you the money!' Explain the tone in Christine’s
words.
iii) 'Believe me Nora, that’s the best thing for both of you.' From later in the play which reason does Mrs. Linde give to support what she says now?
v) Discuss one character trait of Nora evident in this extract.
v) Discuss one social theme raised in this extract.
vi) 'Nora! Nora! You are quite out of your mind.' Add a question tag.
vii) Discuss one aspect of style in this extract.
viii)Nora says that a wonderful thing is going to happen. From the rest of the play, explain what she means by that.
ix)Explain the meaning of the following phrases as used in the extract.
a) Go out of mind
b) I forged a name
c) You will be my witness
Date posted: September 3, 2019.
- The line passing through the points P(5, b), Q(2,3) is parallel to the line 2y=-x+2. determine the value
of b.(Solved)
The line passing through the points P(5, b), Q(2,3) is parallel to the line 2y=-x+2. Determine the value
of b.
Date posted: September 3, 2019.
- A prism of length 15cm has a uniform triangular cross section of sides measuring 8cm, 7cm and 5cm.
(Solved)
A prism of length 15cm has a uniform triangular cross section of sides measuring 8cm, 7cm and 5cm. Determine the volume of the prism.
Date posted: September 3, 2019.
- Read the passage bellow and answer the questions that follow. (Solved)
Read the passage bellow and answer the questions that follow.
Problem drinkers and alcoholics pay severe penalties for their drinking. It has been estimated that alcoholics are likely to die ten to twelve years sooner than non-alcoholics half die before the age of fifty, which is one reason there are so few elderly alcoholics. The mortality rate (that is, the number of persons per 100,000 who die each year) among alcoholics is more than two and a half times higher than that of the general population. Alcoholics often die violent circumstances; serious accidents, homicide, and suicide are not uncommon. This, together with the physical deterioration accompanying alcoholism, helps explain the limits on life expectancy. No one really knows how many deaths are directly attributed to drinking, and all such statistics are estimates. One reason for our limited knowledge is that many physicians do not report alcoholism as the main cause of death out of concern for the feelings of the family of the deceased. Research on the physiological effects of alcoholism has increased in the last few years. Heavy drinking is known to be associated with various types of cancer, particularly among persons who also use tobacco. Alcohol abuse also increases the probability of hypertension, stroke and coronary heart disease. Alcoholics frequently suffer illness and death from cirrhosis of the liver, a disease in which the liver becomes fatty, scarred, and incapable of functioning normally. In large urban areas, cirrhosis is the fourth most common cause of death among men aged twenty-five to forty-five. Alcohol affects the brain, often permanently damaging the mental functioning of alcoholics. Drinking may reduce the number of living cells in the brain. Since brain cells do not grow back, alcoholics may suffer from organic psychosis (a mental illness traceable to brain damages), loss of
memory, and poor physical and mental co-ordination. One out of four persons who are admitted to mental hospitals are diagnosed as alcoholics and 40 percent of all admissions are alcohol related. Many of the alcoholic inmates are unlikely to recover.
The unborn children of female alcoholics are subject to harm from drinking in what is called foetal alcohol syndrome. Because alcohol tends to be a substitute for a balanced diet, alcoholics are often malnourished. Consequently, the infants of alcoholic women are likely to be less healthy and less well developed than other babies. Moreover, when a pregnant woman drinks, so, in effect, does her foetus. The new born children of alcoholic women may die shortly after birth unless they are medically treated
from the shock to their systems for suddenly being cut off from alcohol. Furthermore, the impact of alcohol on the woman and her foetus is a major cause of birth defects and originally based mental eficiency among the newborn. The effects of foetal alcohol syndrome on the children of female alcoholics are usually chronic and may be permanently disabling. Clearly, it is not too much of an exaggeration to say that alcohol kills and maims people. When abused, alcohol is a highly dangerous drug
Questions
(i) What are the major causes of death among alcoholics?
(ii) Which reason does the writer give as to why physicians do not report alcoholic related deaths?
(iii) One out of four persons who are admitted to mental hospitals are diagnosed as alcoholics.
(Rewrite using a few.......)
(iv) Alcoholics often die under violent circumstances…. (Add a question tag)
(v) What is the attitude of the writer towards people who abuse alcohol
(vi) Explain what the following sentence means. Alcohol tends to be a substrate for a balanced diet
(vii) Make notes on the effects of alcohol to expectant mothers and their children
(viii) Supply a suitable title for the passage
(ix) Explain the meanings of the following words and phrases as used in the passage
a) Attributable
b) Scarred
c) Statistics
Date posted: September 3, 2019.
- Simplify the expression(Solved)
Simplify the expression
Date posted: September 3, 2019.
- State four circumstances under which photocopying may be used to reproduce documents in a school.(Solved)
State four circumstances under which photocopying may be used to reproduce documents in a school.
Date posted: September 3, 2019.
- Identify the particles which enable the following substances to conduct electricity.
(i) Aluminium metal
(ii) Molten lead (II) bromide(Solved)
Identify the particles which enable the following substances to conduct electricity.
(i) Aluminium metal
(ii) Molten lead (II) bromide
Date posted: September 3, 2019.
- State whether each of the following transactions increased, decreased or had no effects on the balance sheet totals.(Solved)
State whether each of the following transactions increased, decreased or had no effects on the balance sheet totals.
Date posted: September 3, 2019.
- Fill in the blank spaces below.(Solved)
Fill in the blank spaces below.
It is important that the Judiciary (1)................Up the war on land grabbing even as we focus on
the fight (2).................... corruption. Corruption in the lands sector is deeply (3)......................
since as a nation we are focused on (4)......................corruption in the management and distribution
of funds in the public domain while taking a back (5)......................on land grabbing issues. Despite the
fact that efforts have been put in place to (6)...................land grabbing, cases of land (7)
.....................through illegal means have increased. Our cities and towns are the most (8)...........................
......... affected by this challenge. The National Land Commission (NLC) and county
governments should come up with measures and tougher (9)........................that will deal with
this vice once and for all. One of the biggest challenges facing the justice system is the slow court
(10) ..............................
Date posted: September 3, 2019.
- Without using mathematical table of calculator, evaluate:(Solved)
Without using mathematical table of calculator, evaluate:
Date posted: September 3, 2019.
- The table below shows PH values of substances A, B, C and D. Study it and answer the questions that follow.(Solved)
The table below shows PH values of substances A, B, C and D. Study it and answer the questions that follow.
(a) Which substance is likely to be pure water
(b) Which solution contains the lowest concentration of hydrogen ions?
(c) In the equation below, identify the reagent that acts as a base. Give a reason for your answer.
Date posted: September 3, 2019.
- Diana, Peter and James have been running a business as a partner without a written agreement. Advice them on the following matters as per the...(Solved)
Diana, Peter and James have been running a business as a partner without a written agreement. Advice them on the following matters as per the partnership Act.
a) Profit and loss sharing
b) Salary to partners
c) Loans given to the business by the partner
d) Admission of a new partner
Date posted: September 3, 2019.
- Give the I.U.P.A.C name of the oxide of nitrogen that:-
(i) Relights a glowing splint
(ii) Forms brown complex compound with acidified Iron (II) sulphate solution...(Solved)
Give the I.U.P.A.C name of the oxide of nitrogen that:-
(i) Relights a glowing splint
(ii) Forms brown complex compound with acidified Iron (II) sulphate solution
(iii) Reacts with water to form nitric (V) acid
Date posted: September 3, 2019.
- The following represents a Bunsen Burner flame.(Solved)
The following represents a Bunsen Burner flame.
(a) Name the parts of the flame labeled A and B.
(b) Identify the hottest part of the flame. Give a reason.
Date posted: September 3, 2019.