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- The figure below is a cuboid ABCDFFGH such that AB 8cm, BC = 6cm and CF 4cm.
Determine:
a) the length
(i) AC
(ii) AF
b) The angle AF makes...(Solved)
The figure below is a cuboid ABCDFFGH such that AB 8cm, BC = 6cm and CF 4cm.
Determine:
a) the length
(i) AC
(ii) AF
b) The angle AF makes with plane ABCD.
c) The angle plane AEFB makes with the plane ABCD
d) Find the angle between line EG and line DC
Date posted: September 19, 2019.
- Using electrons in the outermost energy level, draw a dot (.) and cross (X) diagram for the ion and compound given. (P=15, H=1, B=5,...(Solved)
Using electrons in the outermost energy level, draw a dot (.) and cross (X) diagram for the ion of
and compound B2O3. (P=15, H=1, B=5, O= 16)
Date posted: September 19, 2019.
- The table below shows the income tax rates for the year 2006.
In the year 2006, Ali’s monthly earnings were as follows:
Basic Salary KShs 22,600;House Allowance...(Solved)
The table below shows the income tax rates for the year 2006.
In the year 2006, Ali’s monthly earnings were as follows:
Basic Salary KShs 22,600;House Allowance Kshs 12,000;
Medical Allowance Kshs 2,880;Transport Allowance KShs 340
Ali was entitled to a monthly personal relief of Sh 1162 and an insurance relief of Sh 450.
Every month the following deductions were made:
NHIF KShs 320; Insurance Premium Shs 3000;Sacco Loan repayment Shs 6000
Sacco Share contribution Shs 1500; Workers Union dues Shs 200
Calculate:
a) Ali’s taxable income in K£ p.a.
b) Ali’s monthly tax paid in Kshs
c) Ali’s monthly net income from his employment in KShs
d) If Ali received a 10% increase in his basic salary, calculate the corresponding percentage
increase on the income tax.
Date posted: September 19, 2019.
- The table below shows ammeter reading recorded when 2M Sulphuric (VI) acid and 2M ethanoic acid were tested separately.(Solved)
The table below shows ammeter reading recorded when 2M Sulphuric (VI) acid and 2M ethanoic acid were tested separately.
Explain the difference in the ammeter readings.
Date posted: September 19, 2019.
- Study the energy level diagram for the reaction shown below and use it to answer the questions that follow.(Solved)
Study the energy level diagram for the reaction shown below and use it to answer the questions that follow.
2SO2(g) + O2(g)----->2SO3(g)
(i) State and explain two ways of increasing the yield of SO3 per unit time from the diagram.
(ii) What do the following represent?
![Q29192019913.png](/questions/uploads/Q29192019913.png)
Date posted: September 19, 2019.
- When Iron (III) chloride is exposed to the atmosphere, it forms a solution.
(a) Name the process that takes place.
(b) State one use of the...(Solved)
When Iron (III) chloride is exposed to the atmosphere, it forms a solution.
(a) Name the process that takes place.
(b) State one use of the process named in (a) above.
Date posted: September 19, 2019.
- The following diagram was used to study a property of hydrogen gas. Study it and answer the questions that follow.(Solved)
The following diagram was used to study a property of hydrogen gas. Study it and answer the questions that follow.
a) Name the missing condition in the above set up.
b) Explain why the combustion tube is clamped in a slanting position.
c) Before lighting the gas at the end of delivery tube, hydrogen must be let to pass through until all the air is driven out. Explain.
d) State three observations that occur in the combustion tube.
e) Why was hydrogen gas burnt at point Z.
f) Why should the supply of hydrogen gas be continued while the apparatus cool.
g) What would be observed if the experiment was repeated using lead (II) oxide.
h) Other than the property investigated above, name two other chemical properties of hydrogen gas.
Date posted: September 19, 2019.
- Find the mass of 5.2 x 1025 atoms of sodium. (Na = 23.0, L = 6.023 x 103)(Solved)
Find the mass of 5.2 x 1025 atoms of sodium. (Na = 23.0, L = 6.023 x 103)
Date posted: September 19, 2019.
- 0.239g of copper (II) oxide was placed in a conical flask. Calculate the volume of 0.1 M solution of hydrochloric acid that would completely react...(Solved)
0.239g of copper (II) oxide was placed in a conical flask. Calculate the volume of 0.1 M solution of hydrochloric acid that would completely react with copper (II) oxide in the conical flask.
(0= 16.0, Cu = 63.5, H= 1.0, Cl = 35.5)
Date posted: September 19, 2019.
- Calculate the mass of sodium carbonate contained in 200cm3 of 0.02M sodium carbonate solution.(Solved)
Calculate the mass of sodium carbonate contained in 200cm3 of 0.02M sodium carbonate solution.
Date posted: September 19, 2019.
- A sample of 10cm3 of hydrogen sulphide was burned in 40cm3 of oxygen. Calculate the volume and composition of residual gas (assume all volumes are...(Solved)
A sample of 10cm3 of hydrogen sulphide was burned in 40cm3 of oxygen. Calculate the volume and composition of residual gas (assume all volumes are measured at s.t.p)
Date posted: September 19, 2019.
- What is Molar gas volume?(Solved)
What is Molar gas volume?
Date posted: September 19, 2019.
- In the figure below, PAQ is a tangent to the circle at point A.
Find angle DAB and angle BAQ. giving reasons for your answer.(Solved)
In the figure below, PAQ is a tangent to the circle at point A.
Find angle DAB and angle BAQ. giving reasons for your answer.
Date posted: September 18, 2019.
- A mixture of sand, cement and ballast is in the ratio 5:1:3. If the cost of 7 tonnes of sand is Sh 3000,
5 tonnes of...(Solved)
A mixture of sand, cement and ballast is in the ratio 5:1:3. If the cost of 7 tonnes of sand is Sh 3000,
5 tonnes of cement sh 50,000 and 8 tonnes of ballast Sh 4000, find the cost of 7tonnes of the mixture.
Date posted: September 18, 2019.
- Solve the equation(Solved)
Solve the equation
Date posted: September 18, 2019.
- The price of a new car is Shs. 800,000. If it depreciates at a constant rate to Shs 550,000within 4 years, find the annual rate...(Solved)
The price of a new car is Shs. 800,000. If it depreciates at a constant rate to Shs 550,000 within 4 years, find the annual rate of depreciation.
Date posted: September 18, 2019.
- The graph below is part of a straight line obtained from the initial equation y = axn.
Use the graph to calculate the values of a...(Solved)
The graph below is part of a straight line obtained from the initial equation y = axn.
Use the graph to calculate the values of a and n
Date posted: September 18, 2019.
- A quantity y varies partly as the square of x, and partly as x. When y = 20 x = 2 and when y...(Solved)
A quantity y varies partly as the square of x, and partly as x. When y = 20 x = 2 and when y =36, x = 3.
Find the equation showing the relationship between x and y.
Date posted: September 18, 2019.
- In the figure below, PS = PQ, PQ = 10cm, / PSQ=5O°, QR = 12cm and / SQR = 62°.
Find SR(Solved)
In the figure below, PS = PQ, PQ = 10cm, / PSQ=5O°, QR = 12cm and / SQR = 62°.
Find SR
Date posted: September 18, 2019.
- Find the longest side of the right-angled triangle whose other sides are; ( v2 + l)cm and(v2 - l)cm long, leaving your answer in surd...(Solved)
Find the longest side of the right-angled triangle whose other sides are; ( v2 + l)cm and (v2 - l)cm long, leaving your answer in surd form
Date posted: September 18, 2019.
- Solve for x(Solved)
Solve for x ![fig9518920191714.png](/questions/uploads/fig9518920191714.png)
Date posted: September 18, 2019.
- To estimate the population size of fish in a certain pond, traps were laid at random and 600 fish were caught marked and released back...(Solved)
To estimate the population size of fish in a certain pond, traps were laid at random and 600 fish were caught marked and released back into the pond. 3 days later traps were laid and 240 fish were caught out of which 80 of them had a mark. Calculate population size of the fish in the pond.
Date posted: September 18, 2019.
- (a) Expand ( 1- ½ x)6
(b) Hence use the above expansion to the fourth term to find the value of (0.98)6(Solved)
(a) Expand ( 1- ½ x)6
(b) Hence use the above expansion to the fourth term to find the value of (0.98)6
Date posted: September 18, 2019.
- During a Practical study students made measurements on a fish and found out that its body lengthfrom the tip of the mouth to the tail...(Solved)
During a Practical study students made measurements on a fish and found out that its body length from the tip of the mouth to the tail tip was 30cm and the length from the tail tip to the anus was 12cm. Use this information to calculate the tail power of the fish.
Date posted: September 18, 2019.
- Two circles of radii 3cm and 8cm have their centres 13cm apart. Calculate the length ofthe direct common tangent. (Solved)
Two circles of radii 3cm and 8cm have their centres 13cm apart. Calculate the length of the direct common tangent.
Date posted: September 18, 2019.
- What is meant by tail power ?(Solved)
What is meant by tail power ?
Date posted: September 18, 2019.
- Calculate the shortest distance in nautical miles between M(45°N, 38°E) andN(45°N, I 42°W) (Solved)
Calculate the shortest distance in nautical miles between M(45°N, 38°E) and N(45°N,42°W)
Date posted: September 18, 2019.
- Make x the subject in the formula:(Solved)
Make x the subject in the formula:
![fig9218920191653.png](/questions/uploads/fig9218920191653.png)
Date posted: September 18, 2019.
- Below is a diagram of a bony fish which lives in fresh water habitat.(Solved)
Below is a diagram of a bony fish which lives in fresh water habitat.
a) Name the class to which the fish belongs
b) Using observable features only give two reasons for your answer in (a) above.
c) i) Name the part of the fish labelled N.
ii) State the function of part N
d) State two functions of the part labelled L during movement of the fish in water.
e) Using observable features only describe three ways by which the fish is adapted to living in its habitat.
f) i) Name one structure on the fish that prevents it from pitching.
ii) Name one structure on the fish that prevents it from yawing.
Date posted: September 18, 2019.
- A man deposits his money in a savings bank on a monthly basis. Each deposits exceeds the previous one by Shs 500. If he started...(Solved)
A man deposits his money in a savings bank on a monthly basis. Each deposits exceeds the previous one by Shs 500. If he started by depositing Shs 1500, how much will he have deposited in 12 months?
Date posted: September 18, 2019.