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- 1.6g of magnesium metal is reacted with excess hydrochloric acid. Calculate the volume
of hydrogen gas produced (Molar gas volume at stp = 22.4dm3 Mg=24)(Solved)
1.6g of magnesium metal is reacted with excess hydrochloric acid. Calculate the volume
of hydrogen gas produced (Molar gas volume at stp = 22.4dm3 Mg=24)
Date posted: October 17, 2019.
- A mercury barometer reads 75cmHg at the base of Mt.Kenya. Assuming that the height of
the mountain is 1088m and the average density of air...(Solved)
A mercury barometer reads 75cmHg at the base of Mt.Kenya. Assuming that the height of
the mountain is 1088m and the average density of air is 1.25kg/m3. What is the reading of the
barometer at the top of the mountain? (Take density of mercury is 13.6g/cm3.)
Date posted: October 17, 2019.
- The figure below is that of a uniform meter rule supported at the 30cm. A load of 5N is attached at
the 0cm mark and...(Solved)
The figure below is that of a uniform meter rule supported at the 30cm. A load of 5N is attached at
the 0cm mark and that of 2N to a pulley at the 100cm mark. Calculate the weight of the meter rule.
![fig14171020191237.png](/questions/uploads/fig14171020191237.png)
Date posted: October 17, 2019.
- Before using a vernier calipers to measure diameter of a steel ball, a student confirmed that it had a zero error of -0.03cm. The figure...(Solved)
Before using a vernier calipers to measure diameter of a steel ball, a student confirmed that it had a zero error of -0.03cm. The figure below shows the vernier calipers scale when in use.
State the correct diameter of the steel ball.
Date posted: October 17, 2019.
- 10.08g of ethanedioic acid (H2C2O4.xH2O) crystals were dissolved in water and made to 1dm3 solution. 25.0cm3 of this solution was completely neutralized by 20cm3 of...(Solved)
10.08g of ethanedioic acid (H2C2O4.xH2O) crystals were dissolved in water and made to 1dm3 solution. 25.0cm3 of this solution was completely neutralized by 20cm3 of 0.2M
sodium hydroxide solution.
Calculate
i) Molarity of the acid
ii)the value of x in H2C2O4xH2O acid
Date posted: October 17, 2019.
- What causes milk fever in dairy cows?(Solved)
What causes milk fever in dairy cows?
Date posted: October 17, 2019.
- Below are some care and maintenance practices for a certain farm tool.
-Knobs should be replaced when worn out.
-Cap iron should be replaced when worn...(Solved)
Below are some care and maintenance practices for a certain farm tool.
-Knobs should be replaced when worn out.
-Cap iron should be replaced when worn out.
-Cutting edge should be sharpened on an oilstone when blunt.
a)Identify the tool.
b)Give three different types of the above named tool.
c)Name two other tools that can be used to do the same job as the above mentioned tools
Date posted: October 17, 2019.
- State four qualities of a good feed store.(Solved)
State four qualities of a good feed store.
Date posted: October 17, 2019.
- Campers GAZ cylinder contains about 1.12dm3 of butane measured at 0o and 1atm. Given that 25% of heat is lost, what is the maximum volume...(Solved)
Campers GAZ cylinder contains about 1.12dm3 of butane measured at 0o and 1atm. Given that 25% of heat is lost, what is the maximum volume of water at room temperature which can be boiled to 100oC in order to make some coffee?
![Q31101720191211.png](/questions/uploads/Q31101720191211.png)
Date posted: October 17, 2019.
- State the functions of each of the following components in a tractor engine.
Carburetor
Lift pump (Solved)
State the functions of each of the following components in a tractor engine.
Carburetor
Lift pump
Date posted: October 17, 2019.
- Name two diseases in livestock that may be spread through breeding. (Solved)
Name two diseases in livestock that may be spread through breeding.
Date posted: October 17, 2019.
- State two reasons why drenching alone is not an effective method of controlling liver fluke.(Solved)
State two reasons why drenching alone is not an effective method of controlling liver fluke.
Date posted: October 17, 2019.
- Distinguish between opening and closing valuation. (Solved)
Distinguish between opening and closing valuation.
Date posted: October 17, 2019.
- The following information was extracted from the farm records of Mukulu farm, as at 31/12/2014.
Prepare profit and loss account for Mukulu farm using the above...(Solved)
The following information was extracted from the farm records of Mukulu farm, as at 31/12/2014.
Prepare profit and loss account for Mukulu farm using the above information.
Date posted: October 17, 2019.
- An organic compound P contains 68.9% carbon, 13.5% hydrogen and 21.6% oxygen.
The relative formula mass of p is 74. Determine its molecular formula. [C=12, H=1,...(Solved)
An organic compound P contains 68.9% carbon, 13.5% hydrogen and 21.6% oxygen.
The relative formula mass of p is 74. Determine its molecular formula. [C=12, H=1, 0=16]
Date posted: October 17, 2019.
- State two factors which may determine the size of a cut off drain. (Solved)
State two factors which may determine the size of a cut off drain.
Date posted: October 17, 2019.
- The diagram below shows a cabbage seedling which has been attacked by a certain pest.
a)Identify the pest
b)State two methods of controlling the above...(Solved)
The diagram below shows a cabbage seedling which has been attacked by a certain pest.
a)Identify the pest
b)State two methods of controlling the above pest
Date posted: October 17, 2019.
- The diagram below shows a graphical representation of an economic law.
Explain what is happening in each of the zones marked A, B and C...(Solved)
The diagram below shows a graphical representation of an economic law.
Explain what is happening in each of the zones marked A, B and C in relation to utilization of scarce resources.
Date posted: October 17, 2019.
- In a reaction 20cm3 of 0.1 M Sodium Carbonate completely reacted with 13cm3 of dilute sulphuric acid. Find the molarity of the sulphuric acid used.(Solved)
In a reaction 20cm3 of 0.1 M Sodium Carbonate completely reacted with 13cm3 of dilute sulphuric acid. Find the molarity of the sulphuric acid used.
Date posted: October 17, 2019.
- Calculate the number of water molecules when 34.8g Na2CO3 xH2O is heated and 15.9g of anhydrous Na2CO3 obtained (H=1, O=16, Na= 23, C = 12)(Solved)
Calculate the number of water molecules when 34.8g Na2CO3 xH2O is heated and 15.9g of anhydrous Na2CO3 obtained (H=1, O=16, Na= 23, C = 12)
Date posted: October 17, 2019.
- Give two practices that are commonly used in hardening seedlings in a kales nursery.(Solved)
Give two practices that are commonly used in hardening seedlings in a kales nursery.
Date posted: October 17, 2019.
- A farmer has the option of growing either wheat or maize in his one hectare land. Wheat gives a return of Kshs. 20, 000 while maize...(Solved)
A farmer has the option of growing either wheat or maize in his one hectare land. Wheat gives a return of Kshs. 20, 000 while maize gives a return of Kshs. 35, 000. What will be the opportunity cost.
Date posted: October 17, 2019.
- 3.52g of Carbon (IV) Oxide and 1.40g of water are produced when a mass of a hydrocarbon is completely burnt in oxygen. Determine the empirical...(Solved)
3.52g of Carbon (IV) Oxide and 1.40g of water are produced when a mass of a hydrocarbon is completely burnt in oxygen. Determine the empirical formula of the hydrocarbon;
(H = 1 , C= 12, O = 16)
Date posted: October 17, 2019.
- State three ways in which Portugal benefited from Mozambique prior to 1900.(Solved)
State three ways in which Portugal benefited from Mozambique prior to 1900.
Date posted: October 17, 2019.
- Identify the super power that emerged after the Second World War.(Solved)
Identify the super power that emerged after the Second World War.
Date posted: October 17, 2019.
- Galvanized iron sheets are made by dipping the sheets in molten Zinc.
i) Explain how zinc protects iron from rusting
ii) Name the process applied in galvanization...(Solved)
Galvanized iron sheets are made by dipping the sheets in molten Zinc.
i) Explain how zinc protects iron from rusting
ii) Name the process applied in galvanization of iron with zinc
Date posted: October 17, 2019.
- Identify two treaties that the Allies signed with the central powers after the First World War. (Solved)
Identify two treaties that the Allies signed with the central powers after the First World War.
Date posted: October 17, 2019.
- Calculate the volume of oxygen gas used during the burning of magnesium (O = 16, molar gas volume = 24,000cm3 at room temperature)(Solved)
Calculate the volume of oxygen gas used during the burning of magnesium (O = 16, molar gas volume = 24,000cm3 at room temperature)
Date posted: October 17, 2019.
- Define the term “sphere of influence’ as used by the European powers at Berlin Conference of 1884 and 1885. (Solved)
Define the term “sphere of influence’ as used by the European powers at Berlin Conference of 1884 and 1885.
Date posted: October 17, 2019.
- How many chloride ions are present in 1.7g of magnesium chloride crystals?
(Avogadro’s constant = 6.0 x 1023, Mg = 24, Cl = 35.5)(Solved)
How many chloride ions are present in 1.7g of magnesium chloride crystals?
(Avogadro’s constant = 6.0 x 1023, Mg = 24, Cl = 35.5)
Date posted: October 17, 2019.