-
The following diagram shows how chlorine gas can be prepared in the laboratory.
Complete the diagram
Date posted:
September 13, 2019
-
A compound of carbon hydrogen and oxygen contains 57.15% carbon, 4.76% hydrogen and rest oxygen. If its relative molecular mass is 126, find its molecular formula. (C = 12, H = 1, O = 16)
Date posted:
September 13, 2019
-
Name two types of labour records that can be kept by a large scale plantation farmer.
Date posted:
September 13, 2019
-
Simplify without using mathematical tables or calculator.
Date posted:
September 13, 2019
-
Name any three crops that can be propagated by use of suckers.
Date posted:
September 13, 2019
-
Mrs. Ondiek invested Ksh. 63560 in a bank where the interest was compounded quarterly at the rate of 12% per month. Determine the amount of money she had after 2 ½ years.
Date posted:
September 13, 2019
-
Calculate the relative error in 7.9 ÷ 4.3
Date posted:
September 13, 2019
-
The diagram below shows livestock parasites. Study the diagrams and answer the questions that follow.
a) Identify the parasites X and Y above.
b) State two effects that are caused by the parasite labeled X on the animal’s body.
c) Name one disease transmitted by parasite labeled X above.
d) State three measures taken to control the parasite labeled Y above.
Date posted:
September 13, 2019
-
The diagram below shows a tractor drawn implement. Study it and answer the questions that follow.
a) Name the parts A, B, C and D.
b) State two advantages of using the above implement over mould- board plough.
c) State the function of the parts labeled.
i) A
ii) D
Date posted:
September 13, 2019
-
State four disadvantages of animal drawn implements over tractor drawn implements.
Date posted:
September 13, 2019
-
State two factors that could cause sudden stopping of a tractor engine.
Date posted:
September 13, 2019
-
State one significance of mobile calf pen in calf rearing.
Date posted:
September 13, 2019
-
State four factors that determine the choice of poultry rearing system that a farmer chooses to use.
Date posted:
September 13, 2019
-
A volume of 80cm3 of nitrogen gas diffused through an office in 40 seconds. How long will 170cm3 of carbon (IV) oxide take to diffuse through the same office? (N = 14, C = 12, O = 16)
Date posted:
September 13, 2019
-
The figure below shows part of a Bunsen burner. Study it and answer the questions that follow.
(a) Name labelled parts B and D.
(b) State the function of the part labelled B.
Date posted:
September 13, 2019
-
Name three reasons that would make a farmer use a Machakos dip instead of a plunge dip to control ticks.
Date posted:
September 12, 2019
-
State three signs of attack by endoparasites a farmer can observe.
Date posted:
September 12, 2019
-
State three reasons that would make a farmer opt to rear indigenous cattle breeds instead of exotic cattle breeds.
Date posted:
September 12, 2019
-
In an experiment to determine the density of sand using a density bottle, the following measurements were recorded:
Mass of empty density bottle = 43.2g
Mass of density bottle full of water = 66.4g
Mass of density bottle with some sand = 67.5g
Mass of density bottle with the sand filled up with water = 82.3g
Use the above data to determine the;
a) Mass of the water that completely filled the bottle.
b) Volume of water that completely filled with the bottle.
c) Volume of the density bottle;
d) Mass of sand
e) Mass of water that filled the space above the sand.
f) Volume of the sand
g) Density of the sand
Date posted:
September 12, 2019
-
The diagram below shows pests that affect crops when in the field. Study the diagrams and answer the questions that follow.
a) Identify the pest J, K and L.
b) State two ways of controlling the pest labeled L above
c) State one crop attacked by the pest labeled J and K above.
Date posted:
September 12, 2019
-
The distance between an upright image and the object produced by a thin lens is 40cm. The image is 3 times as tall as the object.
i) State the type of lens used.
ii) Determine the object distance.
iii) Determine the radius of curvature.
iv) State one application of the lens as used in question (b) above.
Date posted:
September 12, 2019
-
Name two ways in which predators affect agricultural production
Date posted:
September 12, 2019
-
List two disadvantages of small scale farming.
Date posted:
September 12, 2019
-
Using well labeled diagrams, explain how each of the following features are formed.
i) Spit
ii) Blow hole
Date posted:
September 12, 2019
-
The figure below shows a rectangular object of mass 100kg tethered to the sea-bed by a wire. The dimension are 4m ×1.5m × 2m
Calculate the:
i) Weight of sea water displaced by the buoy (density of sea water = 1100kgm-3)
ii) Upward force exerted on the buoy by the water.
iii) The tension on the string.
Date posted:
September 12, 2019
-
Name three places in East Africa where glaciers are found.
Date posted:
September 12, 2019
-
The figure below shows a bimetallic strip in electric circuit made of two metals A and B. B expands more than A.
X and Y are metal contact while P and Q are identical bulbs. Explain the effect on the bulb when ice cold water is poured onto the strip.
Date posted:
September 12, 2019
-
You intend to carry out a field study of the land forms around your school.
i) State three objectives of your study.
ii) State three methods you would use to record the information you would collect
Date posted:
September 12, 2019
-
The following results were obtained during an experiment to determine the solubility of potassium nitrate in water at 300C.
Mass of dish = 15.86g, mass of dish + saturated solution at 300C= 26.86g, mass of dish + solid KNO3 after evaporation to dryness = 16.7g. Calculate the mass of saturated solution containing 60.0g of water at 300C.
Date posted:
September 12, 2019
-
Three identical springs each of spring constant 10N/m and weight 0.5N are used to support a load as shown.
Determine the total extension of the system.
Date posted:
September 12, 2019