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Study the flow chart below and answer the questions that follow.
a) Explain using 3 equations how Sulphur (IV) oxide is obtained in contact process.
b) State three identities of solid K.
c) Name two impurities present in the gaseous mixture and suggest how they can be eliminated.
d) Identify the catalyst used in the catalytic converter and state two reasons why it is preferred.
e) Explain why Sulphur (VI) oxide is not absorbed directly into water.
f) Write balanced chemical equations for the reactions taking place at:
i). The catalytic converter
ii). Absorption tower.
iii). Diluter
Date posted:
August 19, 2019
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A cinema theatre has 200 seats. Tickets prices are Ksh 500 for adult and Ksh 250 for a child.
a) One evening 80% of the seats in the cinema are occupied. Twenty of the people present are children. Calculate the total amount of money obtained from the sale of tickets that evening.
b) On another evening x children are present and all the seat are occupied. If the money obtained from the sale of tickets is Ksh 90500. Calculate the value of x.
c) The money obtained from sale of tickets in a given week is used to pay for maintenance and expenses. The balance is the profit for the week. If the ratio of profit to expenses is 3:4 and that of expenses to maintenance is 5:6 and given that Kshs. 1062000 was collected in a given week, calculate the profit for the week.
Date posted:
August 19, 2019
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The three sides of a right angled triangle are (x-1), (2x+8) and the hypotenuse (3x+1), find the dimensions of the triangle.
Date posted:
August 19, 2019
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In the figure below, O is the centre of circle. Angle BCA=800 and angle CBO = 100. Determine the size of angle CAB.
Date posted:
August 19, 2019
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The image of a point Q(1,2) after a translation is Q1(-1,2). What is the coordinate of the point R whose image is R1(-3,-3) after undergoing the same translation.
Date posted:
August 19, 2019
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32 girls and 52 boys were on an overseas learning trip, and they were divided into as many groups as possible where the number of groups of girls and the number of groups of boys are the same. How many girls and how many boys are there in each group?
Date posted:
August 19, 2019
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Read the poem below and answer the questions that follow.
NATURALLY”
I fear the workers: they writhe in bristling grass
And wormy mud: out with dawn, back with dusk.
Depart with seed, and return with fat- bursting fruits.
And I ate the fruit.
And still they toil at boiling point,
in head – splitting noise and threatening saws:
They suck their energy from slimy cassava
And age – rusty water taps: till they make a Benz
And I ride in the benz: festooned with
stripped rags and python copper coiling monsters
While the workers clap their blistered hands
And I overrun their kids.
They build their hives: often out
of broken bones of fallen mates
And I drone in them – “state house”
Them,“collegize” them, officialize them.
And I……. I whore their daughters
Raised in litter – rotting hovels
And desiring a quickquickhighhighlifelife
To break the bond.
And I tell the workers to unite:
knowing well that they can’t see, hear or understand:
what with sweat and grim sealing their ears
And eyes already blasted with welding sparks,
And me speaking a colourless tongue
But one day a rainstorm shall flood
The litter rotten hovels and
wash the workers’ ears and eyes clean,
Refresh the tattered muscles for a long – delayed blow
a) Describe the working conditions of the workers as depicted in stanza 1 and 2.
b) The persona assumes different roles in stanza 3, 4 and 6.With illustrations explain these roles.
c) Identify and explain 2 images from the poem
d) Which bond do the girls want to break in stanza 5 and how do they do it.
e) What reasons are given for the workers’ inability to understand the persona?
f) What is the poem suggesting in the last stanza?
Date posted:
August 19, 2019
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Read the excerpt below and answer the questions that follow.
Rank: Is there anything wrong?
Nora: No, no, not in the least. It is only something it is my new dress —
Rank: What? Your new dress is lying there.
Nora: Oh, yes, that one; butthis is another. I ordered it. Torvald mustn't know about it —
Rank: Oho! Then that was the great secret.
Nora: Of course. Just go in to him; he is sitting in the inner room, Keep him as long as—
Rank: Make your kind easy; I won't let him escape. (Goes into HELMER'S room)
Nora: (to the MAID) And he is standing waiting in the kitchen?
Maid: Yes, he came up the back stairs.
Nora: But didn't you tell him no one was in?
Maid: Yes, but it was no good.
Nora: He won't go away?
Maid: No; he says he won't until he has seen you, ma'am.
Nora: Well, let him come in —but quietly. Hellen, you mustn't say anything about it to anyone. It is a surprise for my husband.
Maid: Yes, ma'am, i quite understand. (Exit)
Nora: This dreadful thing is going to happen! It will happen in spite of me! No, no, no, it can't happen — it shan't happen! (She bolts the door of HELMER'S room. The MAID opens the hall door for KROGSTAD and shuts it after him. He is wearing a fur coat, high boots and a furcap.)
Nora: (advancing towards him) Speak low — my husband is at home.
Krogstad: No matter about that.
Nora: What do you want of me?
Krogstad: An explanation of something
Nora: Make haste then. What is it?
Krogstad: You know, I suppose, that I have got my dismissal.
Nora: I couldn't prevent it, Mr. Krogstade I fought as hard as a I could on your side, but it was no good.
Krogstad: Does your husband love you so little, then? He knows what I can expose you to, and yet he ventures —
Nora: How can you suppose that he has any knowledge of the sort?
Questions:
a) Place the excerpt in its immediate context.
b) What is it that Nora claims to be another that she ordered? What does it reveal about her character trait?
c) This dreadful thing is going to happen! What is it that Nora fears will happen?
d) What character trait of Nora is brought outin the excerpt?
e) What is the presentation of Rank in the excerpt?
f) What major theme comes out in the excerpt?
g) What is the meaning of the following words as used in the excerpt?
Date posted:
August 19, 2019
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Find the acute angle y if sin 4y = cos 2y.
Date posted:
August 19, 2019
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A particle moves along a straight line such that its displacement S metres from a given point is
S = t3 – 5t2 + 3t + 4 where t is time in seconds.
Find:
(a) The displacement of the particle at t = 5
(b) The velocity of the particle when t = 5
(c) The values of t when the particle is momentarily at rest.
(d) The acceleration of the particle when t = 2.
Date posted:
August 19, 2019
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Mr. Omwega is employed. His basic salary is Kshs. 21, 750 and is entitled to a house allowance of
Kshs 15, 000 and a travelling allowance of Kshs 8, 000 per month. He also claims a family monthly relief of Kshs 1, 056 per month. Other deductions are; Union dues Kshs 200 and Co-operative shares Kshs 4, 500 per month.
The table below shows the tax rates for the year.
Calculate;
(a) Mr. Omwega’s annual taxable income.
(b) The tax paid by Mr. Omwega in the year.
(c) Mr. Omwega’s net income per month
Date posted:
August 19, 2019
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A fritter bought 144 pineapples atsh100 for every six pineapples. She sold them of at sh72 for every three and rest at sh60 for every two.if she made 65% profit. Calculate the number of pineapples sold at sh72 for every three.
Date posted:
August 18, 2019
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Using equations, distinguish between the bleaching action of chlorine and Sulphur (IV) oxide.
Date posted:
August 16, 2019
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Find the value of x in the following equation
25x-1 + 52x = 130
Date posted:
August 16, 2019
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Solve the inequality -3x + 2
Date posted:
August 16, 2019
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The gradient of a line L through points A (2x, 4) and B (-1, X) is 1/7.Find the equation of a line perpendicular to L through B
Date posted:
August 16, 2019
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Using an energy cycle diagram, determine the enthalpy formation of ethanol, given that:
Date posted:
August 16, 2019
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A particle travels in a straight line through a fixed point O such that its displacement S metres, from O is given by S = 3t3 – 27t2 + 72t + 4 where t is the time in seconds after passing O.
Calculate;
a) The displacement of the particle at t = 3.
b) The value of t for which the particle is momentarily at rest.
c) The acceleration when t = 4.
d) At what time is its minimum velocity?
Date posted:
August 16, 2019
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During the manufacture of sodium carbonate by solvay process,there is a by-product produced which is not recycled.
(a) Write the equation for the formation of this by-product.
(b) State one of the uses of the product (a) above.
(c) State one use of the sodium carbonate formed.
Date posted:
August 16, 2019
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A garden measures 10m long and 8m wide. A path of uniform width is made all round the garden. The total area of the garden and the path is 168m2.
a) Find the width of the path.
b) The path is to be covered with square concrete slabs. Each corner of the path is covered with a slab whose side is equal to the width of the path.The rest of the path is covered with slabs of side 50cm. The cost of making each corner slab is Shs.600 while the cost of making each smaller slab is shs.50.
Calculate;
i) The number of the smaller slabs used.
ii) The total cost of the slabs used to cover the whole path.
Date posted:
August 16, 2019
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In the figure below K, L, M and N are points on the circumference of a circle centre O. The points K, O, M and P are on a straight line. PN is a tangent to the circle at N. Angle KOL = 1300 and Angle MKN = 400.
Find the values of the following angles stating the reasons in each case.
a)MLN
b)OLN
c)LNP
d)MPN
e)LMP
Date posted:
August 16, 2019
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A businessman buys beans directly from farmers in 90kg bags at Kshs.2,000 per bag and spends Kshs.100 per bag on transport and other overhead costs. He sells the beans in tins at Kshs.60 making a profit of Kshs.500 per bag.
a) How many tins are there in a bag?
b) In a given season, he sold 1,000 bags. How much did he get?
c) The farmer has two options of selling his beans.
i) To the food processing company at Kshs.2,000 per bag and sells 50 bags.
ii) To retailers at Kshs.60 per tin and sells 30 bags.
Which option would earn her more profit and by how much.
Date posted:
August 16, 2019
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Four towns R, T, K and G are such that T is 84km directly to the North of R, and K is on a bearing of 2950 from R at a distance of 60km. G is on a bearing of 3400 from K and a distance of 30km.
a) Using a scale of 1cm represents 10km, make an accurate scale drawing to show the relative positions of the towns.
b) Using the diagram above find;
i) The distance and bearing of T from G.
ii) The distance and bearing of K from T.
Date posted:
August 16, 2019
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The angles of elevation of the top of a tree form a point x on horizontal ground is 24.50. Rhoda moves 5 metres from x towards the base of the tree and observes that the angle of elevation of the tree is now 33.20. Calculate the height of the tree to one decimal place.
Date posted:
August 16, 2019
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Given that OA = 3i – 2j + k and OB = 4i + j – 3k. Find the distance between points A and B.
Date posted:
August 16, 2019
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In the figure shown below ABCD is a square of side 4cm. BXD and BYD are arcs of circle centres A and C respectively.
Calculate the area of the shaded part.
Date posted:
August 16, 2019
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Replace the underlined words with one word that means the same as the underlined phrase.
i) The city council pulled down all the structures on road reserves.
ii) He passed out during his grandmother’s funeral.
Date posted:
August 16, 2019
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Describe lateralization process of leaching.
Date posted:
August 16, 2019
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Distinguish between soil profile and soil catena.
Explain how the following factors influence soil formation
The parent rock
Relief
Date posted:
August 16, 2019
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Using dots and crosses, show the type of bonding in Calcium Chloride
Date posted:
August 16, 2019