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- Indicate the type of insurance losses described by the following circumstances.
(a) Matter insured is not completely destroyed but cost of salvage is more than the...(Solved)
Indicate the type of insurance losses described by the following circumstances.
(a) Matter insured is not completely destroyed but cost of salvage is more than the wreckage.
(b) Loss occurring by deliberate action of the ship master to save the screw.
(c) Loss occurring on a ship accidentally.
(d) Loss occurring and the matter insured is completely lost.
Date posted: September 4, 2019.
- Explain how a sample of CH3CH2CH2OH could be distinguished from a sample of CH3CH2COOH.(Solved)
Explain how a sample of CH3CH2CH2OH could be distinguished from a sample of CH3CH2COOH.
Date posted: September 4, 2019.
- The following information relate to Sika Investment Ltd for the year ended 30th June 1997.
Required:
Prepare Sika Investment Ltd balance sheet as at 30th June 1997.(Solved)
The following information relate to Sika Investment Ltd for the year ended 30th June 1997.
Required:
Prepare Sika Investment Ltd balance sheet as at 30th June 1997.
Date posted: September 4, 2019.
- Highlight four reasons why mail order business is not very popular in Kenya.(Solved)
Highlight four reasons why mail order business is not very popular in Kenya.
Date posted: September 4, 2019.
- Highlight four advantages of having inland container depots (ICDS) in Nairobi, Kisumu, Eldoret and Malaba.(Solved)
Highlight four advantages of having inland container depots (ICDS) in Nairobi, Kisumu, Eldoret and Malaba.
Date posted: September 4, 2019.
- Chlorine is used to prepare vinyl chloride (chloroethene) CH2 = CHCl.
(i) State why vinyl chloride (CH2 = CHCl) undergoes addition polymerization.
(ii) Name the polymer...(Solved)
Chlorine is used to prepare vinyl chloride (chloroethene) CH2 = CHCl.
(i) State why vinyl chloride (CH2 = CHCl) undergoes addition polymerization.
(ii) Name the polymer formed.
(iii) Complete the following equation to show how the two monomers combine during polymerization.
CH2 = CHCl + CH2 = CHCl----->
Date posted: September 4, 2019.
- The following trial balance was extracted from the Books of Kabati Traders on December 31st 2012.
Stock on 31st December 2012 Sh. 35,000
Prepare the Trading, Profit...(Solved)
The following trial balance was extracted from the Books of Kabati Traders on December 31st 2012.
Stock on 31st December 2012 Sh. 35,000
Prepare the Trading, Profit and Loss Account for the period ended 31st December 2012 and a balance sheet as at that date.
Date posted: September 4, 2019.
- State two reasons why tin coating is used in food cans.(Solved)
State two reasons why tin coating is used in food cans.
Date posted: September 4, 2019.
- The molecular formula mass of gas A is 28 and its empirical formula is CH2.
(a) Determine the molecular formula of gas A (C = 12.0,...(Solved)
The molecular formula mass of gas A is 28 and its empirical formula is CH2.
(a) Determine the molecular formula of gas A (C = 12.0, H = 1.0).
(b) Write the equation of the reaction between A and 1 mole of chlorine gas.
Date posted: September 4, 2019.
- When the oxide of metal Z is heated in the presence of metal X, it is reduced.The oxide of metal X is reduced by metal...(Solved)
When the oxide of metal Z is heated in the presence of metal X, it is reduced.
The oxide of metal X is reduced by metal Y. Arrange the three metals in order of increasing reactivity.
Date posted: September 4, 2019.
- Study the information in the table below and answer the questions that follow:(Solved)
Study the information in the table below and answer the questions that follow:
A mixture containing 40g salt G and 120g salt Y in 100g of water at 80ºC was cooled to 50ºC.
(a) Which salt crystallized out? Give reason.
(b) Calculate the mass of the salt that crystallized out.
Date posted: September 4, 2019.
- Points A,B,C have the co-ordinates (3,1)(8,2) and (2,6) respectively(Solved)
Points A,B,C have the co-ordinates (3,1)(8,2) and (2,6) respectively
(a) Find the mid points of AB and AC
(b) Determine the equations of the perpendicular bisector of AB and AC
(c) Hence or otherwise determine the equation of a circle which passes through the points A, B and C
Date posted: September 4, 2019.
- Calculate the molar enthalpy of formation of ethyne (C2H2) given the following.(Solved)
Calculate the molar enthalpy of formation of ethyne (C2H2) given the following.
![Q149420191048.png](/questions/uploads/Q149420191048.png)
Date posted: September 4, 2019.
- Classify the following as either compounds or mixtures.(Solved)
Classify the following as either compounds or mixtures.
![Q139420191030.png](/questions/uploads/Q139420191030.png)
Date posted: September 4, 2019.
- Complete the table below by filling in the blank spaces for the functions y=sin(x+30)(Solved)
(a) Complete the table below by filling in the blank spaces for the functions y=sin(x+30) and y= cos ½ x and draw their graphs on the same axes
(b) Use your graph to solve
(i) Sin (x+30)-cos ½ x=0
(ii) Sin (x+30)=0
(iii) Cos ½ x=-0.25
Date posted: September 4, 2019.
- Ethanol (CH3CH2OH) and dimethylether (CH3OCH3) are two compounds with the same molecular mass.
Explain why ethanol has a much higher boiling point (78.2ºC) than dimethylether (-24ºC).(Solved)
Ethanol (CH3CH2OH) and dimethylether (CH3OCH3) are two compounds with the same molecular mass.
Explain why ethanol has a much higher boiling point (78.2ºC) than dimethylether (-24ºC).
Date posted: September 4, 2019.
- The points P(1,5) Q(2,2) R(1,1) and S(4,2) are vertices of a quadrilateral PQRS(Solved)
The points P(1,5) Q(2,2) R(1,1) and S(4,2) are vertices of a quadrilateral PQRS
(a) On the grid provided, draw the quadrilateral PQRS
(b) On the same grid draw P1Q1R1S1 the image of PQRS under a rotation of positive quarter turn about the origin. State the co-ordinates of P1Q1R1 and S1
(c) The point P11Q11R11S11 are the images of P1Q1R1S1 under a reflection in the x-axis. On
the same grid draw quadrilateral P11Q11R11S11 and state its co-ordinates
(d) Quadrilateral P11Q11R11S11 is the image of PQRS under a certain reflection. On your graph draw the mirror line LL for the reflection and state its equation
Date posted: September 4, 2019.
- Name the process that takes place when:
(i) Fats or oils are hydrolyzed using an alkali.
(ii) Sulphur is added to rubber in the manufacture of...(Solved)
Name the process that takes place when:
(i) Fats or oils are hydrolyzed using an alkali.
(ii) Sulphur is added to rubber in the manufacture of rubber tyres.
Date posted: September 4, 2019.
- In an experiment to investigate the conductivity of a substance a student used the set up shown below. The student noticed that the bulb did...(Solved)
In an experiment to investigate the conductivity of a substance a student used the set up shown below. The student noticed that the bulb did not light.
(i) What had been omitted in the set up?
(ii) Explain why the bulb lights up when the omission is corrected.
Date posted: September 4, 2019.
- The figure below is a solid frustrum of a rectangular based pryramid AB=12cm, BC=10cm, EF=6cm FG=5cm, FB=8cm and vertical height 6cm.(Solved)
The figure below is a solid frustrum of a rectangular based pryramid AB=12cm, BC=10cm, EF=6cm FG=5cm, FB=8cm and vertical height 6cm.
(a) Calculate the volume of the frustrum
(b) Calculate the surface area of the frustrum
Date posted: September 4, 2019.
- The probability of Onyancha, Nyamusi and Jemima hitting the bull’s eye are(Solved)
The probability of Onyancha, Nyamusi and Jemima hitting the bull’s eye are
respectively.
(a) Draw a probability tree diagram showing this possible outcomes
(b) Find the probability that;
(i) All hit the bulls eye
(ii) Only one of them hit the bull’s eye
(iii) At most one misses the bull’s eye
Date posted: September 4, 2019.
- Determine the oxidation number of:
(Solved)
Determine the oxidation number of:
(i) Manganese in KMnO4.
(ii) Chromium in ![Q7942019955.png](/questions/uploads/Q7942019955.png)
Date posted: September 4, 2019.
- A passenger train travelling at 25km/hr is moving in the same direction as the truck travelling at 30km/hr.(Solved)
A passenger train travelling at 25km/hr is moving in the same direction as the truck travelling at 30km/hr. the railway line runs parallel to the road and the track takes 1 ½ to overtake the train completely
(a) Given that the truck is 5 metres long determine the length of the train in metres
(b) The track and the train continue moving parallel to each other at the original speeds. Calculate the distance between them after 4 minutes and 4 seconds after the track overtake the train
(c) The track stopped 45 minutes after overtaking the train. How long did the train take to catch up with the truck
Date posted: September 4, 2019.
- Describe how a solid sample of lead (II) sulphate would be prepared using the following reagents: dilute nitric (V) acid, lead (II) carbonate solid sodium...(Solved)
Describe how a solid sample of lead (II) sulphate would be prepared using the following reagents: dilute nitric (V) acid, lead (II) carbonate solid sodium sulphate and distilled water.
Date posted: September 4, 2019.
- Four towns A,B,C and D are such that B is on a bearing of 247o and 6km from A.(Solved)
Four towns A,B,C and D are such that B is on a bearing of 247o and 6km from A. C is due SSE and 4.8km from B. D is to the south of A and the bearing of C from D is S44oW
(a) Make a scale drawing showing the relative positions of A,B,C and D using the scale 1cm represents 1km
(b) Use your drawing to determine
(i) The bearing of A from C
(ii) The distance between C and D
(iii) How far D is east of B
(c) The average speed of a cyclist from C to A if he takes 30 minuets between A and D and 20 minutes between D and A
Date posted: September 4, 2019.
- Study the scheme below and answer the questions that follow.(Solved)
Study the scheme below and answer the questions that follow.
(i) Write down the formula of the yellow solid F.
(ii) What property of chlorine is shown in Step I?
(iii) Write an equation for the reaction which occurs in Step II.
Date posted: September 4, 2019.
- The following results were obtained in an experiment to determine the heat of neutralization of 50cm3 2M hydrochloric acid and 50cm3 2M sodium hydroxide.
Mass of...(Solved)
The following results were obtained in an experiment to determine the heat of neutralization of 50cm3 2M hydrochloric acid and 50cm3 2M sodium hydroxide.
Mass of plastic cup = 45.1g
Initial temperature of acid = 27.00C
Initial temperature of alkali = 23.00C
Mass of plastic cup + HCl + NaOH = 145.1g
Temperature of the mixture of acid and alkali = 38.50C
(a) Define heat of neutralization
(b) Write an ionic equation for the neutralization of hydrochloric acid and sodium hydroxide.
(i) The amount of heat produced during the experiment
(Specific heat capacity of solution = 4.2jg-1k-1, density of solution = 1gcm3)
(ii) Molar heat of neutralization for the reaction.
(c) Explain why the molar heat of neutralization of NaOH and Ethanoic acid of equal volume and molarity would be less than the value obtained in C (ii) above.
(d) Write down the thermochemical equation for reaction between NaOH and dilute hydrochloric acid
above
(e) Draw an energy level diagram for the neutralization reaction in (d) above.
Date posted: September 4, 2019.
- A cold water tap can fill a bath in 3 minutes while a hot tap can fill in 5 minutes.(Solved)
A cold water tap can fill a bath in 3 minutes while a hot tap can fill in 5 minutes. The drain pipe can empty the bath in 3 ¾ minutes. The two taps and the drain pipe are fully open for 2 minutes, after which the drain pipe is closed.
(a) What fraction of the bath is filled after the first two minutes
(b) How many seconds are required for the bath to be completely filled?
(c) Given that the cold water tap delivers water at the rate of 200cm3/s
Determine
I. The capacity of the bath in litres
II. The rate of flow of the hot water tap
Date posted: September 4, 2019.
- Given that OA= i + 2j and OB= 2i-3j.(Solved)
Given that OA= i + 2j and OB= 2i-3j. Find the magnitude of AB to three significant figures
Date posted: September 4, 2019.
- Three years ago, James was three times as old as his Peter.(Solved)
Three years ago, James was three times as old as his Peter. In five years time, the sum of their ages will be 76. Determine their present ages
Date posted: September 4, 2019.